Symptoms Of Bad Alternator Wire

None of this stuff should be bad this soon. A friend said bad grounds/wiring could have killed the original alternator so I cleaned the engine block->chassis ground, the battery terminals and every wire coming off either battery terminal. The purpose of this thread is to document the symptoms and experiences with ground problems. 5V for charging. A burning rubber smell becomes noticeable when the alternator is going bad because the alternator works with the belt system. That broke on me, resulting in my running off the battery with the same symptoms you have. The voltage regulator does just that, it regulates the voltage sent to the battery. Common symptoms of code P0622 could include the following- Stored trouble code, and an illuminated charge indicator warning light Vehicle may exhibit signs of a flat, or run-down battery If the vehicle is being driven when the fault occurs, continued driving could cause some functions to stop working as the battery drains. Ammeter stays at 0 with key on. A voltage regulator maintains an even flow of electrical power to an automobile's electrical systems, including the headlights, dashboard components and the stereo. Did you attach and tighten the large alternator wire? Is the alternator connector fully seated? I thought my alternator was bad. One of the first symptoms of a bad or failing alternator is the need to jump start the vehicle on a regular basis. If the alternator won't move, loosen the flange screw underneath the alternator until it will. Therefore, if you are experiencing erratic vehicle behavior as well, this could be your problem. Getting the alternator belt replaced is the only way to get the car back on the road quickly. It could be another problem that presents similar symptoms, so look into other possibilities—such as signs your alternator is bad —as well if you want to get to the bottom of the issue. The vehicle will not stay running after the jumper cables/ jump-start box have/has been removed. The good news is the new alternator came online when I started the. These little buggers have a history of going bad on older Fords, like yours. There are many possibilities for this. some alternators have a wire from the ignition switch to exite the field and get the charging started. I think the easiest way to identify a bad regulator is to check the battery with the engine running. The purpose of this thread is to document the symptoms and experiences with ground problems. Squeaking or Grinding Noise. Find Wiring Connectors and Pigtails with Alternator pigtail Wire Connector Style and get Free Shipping on Orders Over $99 at Summit Racing!. ] One quick thing to check is the ground wire that goes from the alternator to the engine block. The truck runs great, never skips a beat. A good alternator should measure less than. Because it is more common to run into problems with the starter solenoid than with a plug-in relay, for our purposes we will focus on symptoms related to the solenoid. The answer is a bad serpentine belt tensioner that may cause each issue. The most common symptom of a coil pack failure is an engine misfire while the engine is under load (typically during acceleration); however, any of the following conditions may be a sign that the coil pack is bad. For what it's worth, I have essentially zero faith in autozone/advance/etc battery and alternator testing stations. Do you notice your headlights running brighter as you accelerate and dimming as you stop?. Other Electrical Problems The alternator is responsible for providing power to your car’s different electronics. The failing alternator symptom most drivers recognize is dim or flickering lights. I also have never heard rattling or grinding sounds coming from an alternator, normally when the pulley goes bad it sounds something like a power steering pump. if the dim in an out is a big drop in light intensity for less than a second and is not a constant pulsation then that's more indicative of a loose or bad wiring connection somewhere. Bad alternator or voltage regulator? When I bought the car (less than 6 month ago) supposedly it has had a new alternator put in. A bad or failing alternator can discharge your battery, cause issues with your car's electrical systems, or leave you stranded wh. (I would need to know year model to look it up to be sure. It could be susceptible to wear and tear damage or it may even come loose from the pulley. 0 it will start but will only stay running if I keep my foot on the gas. The Double Alternator is a revolutionary new vehicle alternator and corresponding electrical system that can be used in single and dual battery vehicle systems using the same space and existing mounting hardware. Essentially, the alternator turns the mechanical energy of the engine's rotating crank shaft into electricity through induction. Updated: I thought my knock sensor was bad (and it still is), turns out I used regular oil rather than synthetic. Troubleshooting the Starter and Forklift Starting Circuit Note: The following instructions listed below consist of general information for troubleshooting the starter and forklift starting circuit. Turn the key on and the plug off, the exciter wire will have battery voltage along with the other 2. A bad battery will cause an alternator to fail sometimes. This can prolong your diagnostics and you may end up replacing items that are still good. Alternator Stator Failure and Repair. Last edited: May 24, 2014. It started with a random miss at 45 mph, and within 15 miles, we were limping along in first gear, bucking and powerless, with an occasional backfire out the carb. #1 – Flickering Lights If your ground strap is damaged or worn out, the electrical circuit will come across resistance while trying to deliver power to the headlights in front of your vehicle. The first was called Fairlady because of the popularity of the then-new Broadway musical My Fair. Stock RR can work fine for a long time. Many don't recommend this, but the old school (bad) method for testing an alternator, was to remove the neg batter cable while the car is still running. When the alternator is rebuilt, the bearings, voltage regulator, brushes and some other parts are typically replaced with new ones. Charging System Basics. The Alternator should now produce a battery voltage between 14. Disconnect the wiring from the rear of the alternator. The vehicle was towed to an independent mechanic who diagnosed that the alternator was faulty and needed to be replaced. As an alternative to this double wire scheme, you could run one larger wire, at least 10 AWG, from the alternator to the battery cable. the IAC valve may be bad, or dirty. Thankfully both are fairly simple problems to fix. It sounds like you have had some bad luck with alternators and this may be an indication something is wrong with the wiring to the alternator. Indicator lights do not come on when key switch is in "START" position · Faulty bulb. Solution: I felt that because the car ran on the alternator when running I had to start there. In this way, it acts as a switch for the starter solenoid and the starter motor in an automotive. The following symptoms should give you an idea of what's gone wrong, but if you're still not sure, you can always bring your vehicle to Advance Auto Parts for a charging and starting system test. I have seen known bad batteries and alternators test good and vice versa. This wire goes to the battery (or to the main under-hood fuse box and then from there to the battery). When I picked up this new truck I noticed none of the instrument panel worked at all, either. So I'm wondering if this is enough information for someone here to figure out whether this might be an alternator or battery issue (or perhaps something else altogether). 0 volts could indicate a failed alternator or corroded, broken, loose or frayed wires/connections. Next, turn on the engine and recheck the voltage. The alternator can develop an internal short and blow the fuse in the electrical cable between it and the battery. Think of the ground wire or cable as your electrical system's foundation, the bridge over which all electrical flow must tread. I hope that the shop has made sure that the electrical cable terminal, which attaches to the alternator with a nut (usually), isn't touching the body of the alternator and creating the short. Although the alternator was changed, it still a possibility the alternator goes bad (was a brand one or re-condition). terminal on the back of the alternator, (not at the battery). We turned it off and restarted it and it started but we shut it off and have not moved it since. Also, the fully discharged cycles lately are very hard on the life and capacity of a battery. It could be another problem that presents similar symptoms, so look into other possibilities—such as signs your alternator is bad —as well if you want to get to the bottom of the issue. Below we will list each of the signs associated with alternator failure and then the potential causes of each issue. Symptoms Of A Bad Voltage Regulator A bad voltage regulator can leave a vehicle sitting on the side of the road. Engine surging is a common symptom of bad spark plug wires, especially if the wires have cracks or breaks in their outside insulation, a condition that can create significant electrical resistance and lead to abnormal or completely stopped electrical flow to a vehicle's spark plugs. Suffice to say that this thread should remain an "earthy" conversation. It is also responsible for keeping your vehicles battery fully charged. Some of the more common symptoms of a failing or bad belt tensioner include the following. Wiring is another cause for alternator problems, but not nearly as common. Not important at this moment. I replaced the convolute stock setup, with a large guage wire about 2 feet long, directly from the alternator to the battery, bypassing everything else, and saw approx a 1 volt increase at idle, indicating to me that the stock system was compromised by either age and bad connections, or just a bad design. Re: Bad Alternator Causing Engine to Die?? It could be a bad alternator. The manual said check cables, they are good. 4 Symptoms of ECM Failure. Radio stopped working shortly before the engine quit and only clicking (dead battery) when trying to restart. - A reading below 13. 4832 VICE 1. The ECM uses the FR circuit for field rotor status to be able to change engine idle speed. If truck dies, voltage regulator is bad. Doing so will allow the maximum current from the alternator to reach the batteries. * White/Black stripe. The coil module only has about 12,100 miles on it and the wires only have about 10,000 miles on them and the coil wire is getting replaced with the rest of the wires. The alternator is driven by a belt in conjunction with Smell of Burning Rubber. I'm pretty sure that the lights meant the battery wasn't being charged as is the case during preglow. Information is available at the Madelectical (MAD) site. With a fully charged battery, alternator charging voltage should be approximately 13. Alright, so if you suspect you have issues with your alternator and charging system in general, the first thing you need to rule out is a bad battery. The symptoms with my alternator failure were; Low volume restriction (HSE) for 10-15 min in the am Overhead HID lights (8" visionx) were difficult to light Slow cranking I may have had a slight bit of noise from it, but the belt was due to be changed & could have been causing the sound I heard, or masking some sounds the alternator was producing. When I asked about the possibility of an issue created because of the replacement of the engine and immediately the conversation took a hostile tone in which I was told "there is no way an engine replacement could cause this problem!". no sound at all when you turn on the ing. Get your drain fixed first, then look at how well your alternator holds up under load with a known good, charged battery. Alternator charging voltage can be checked using a digital multimeter at the battery terminals. A) was putting out 14. I hope that the shop has made sure that the electrical cable terminal, which attaches to the alternator with a nut (usually), isn’t touching the body of the alternator and creating the short. One of the first symptoms of a bad or failing alternator is the need to jump start the vehicle on a regular basis. While this particular problem can be symptomatic. Although regular maintenance and servicing can keep your car in good condition, the starter may fail due to age, wear and tear. The first is the alternator output rating, which is the amount of current that a unit is capable of producing at a specific rotational speed. again i'm don't know how yours is cofigured. If the voltage reading on the meter display goes up while wiggling one of the wires, you've found a bad electrical wire or connection. Here are the common symptoms: Undercharging - This is the most common problem, and can often be caught in the early stages. · Loose or corroded connections. Loose Alternator Belt Symptoms. A failing alternator gives out some signs and symptoms. What are the symptoms of alternator going bad? Does it go bad gradually or suddenly? Have '90 Seville and the battery is almost 3 yrs old (w/ 5 yr warranty) and AFAIK, the alerternator is the original one. A bad voltage regulator can also cause charging problems. Do you have a 2 wire or 4 wire ballast?). 10SI Alternator Wiring. Next, turn on the engine and recheck the voltage. Alternators are electromechanical devices that power the electrical requirements of the vehicle and charge automotive batteries while the engine is in operation. The ignition switch is connected to a series of high-resistance wires and any of the terminals connecting these wires can overheat. The alternator failed eventually. see if the amount of current is to high. i know the coil is pretty cheap, MSD at. Should take about a half hour or so. The symptoms of a bad alternator include strange noises, similar to a grinding or whining noise and an illuminated warning light. Now for the problems. Corrosion on battery terminals. Any problems within the wires, cables or connections at either end can reduce or stop electricity from getting through. · Faulty alternator. A Whining Noise from the Engine. To check for voltage, test the large gauge wire coming into the relay. Revised 6-15-2015. I'm troubleshooting my alternator and believe I have traced the issue to bad diodes on the diode plate. For many of today's operators and mechanics, electrical systems can be one of the most intimidating areas of your equipment on which to work. The failing alternator symptom most drivers recognize is dim or flickering lights. A "bad ground" is not apt to affect engine performance, because if that ground is bad the engine is not likely to start. Disconnect the rack-and-pinion assembly if your car has one (see Photo 2),. 2 volts at idle (lights off). it may appear to be sending proper voltage or even pass testing, however internally its faulty and is tripping the CMP. Disconnect the harness completely from the alternator by pressing on the connector lever and pulling the connector away from the alternator. I pulled the battery and will take it over to Toyota at 7 AM tomorrow for testing and likely replacement under warranty. With the ignition switch on but the engine off, turn things on, one at a time. If you haven't been running it in a non-charging state for long, it's very likely that your battery is still good. * White/Black stripe. Symptoms of a Bad Alternator All car problems are best solved by a qualified mechanic, but you should also know the warning signs of impending device malfunctions in the car. The starter motor solenoid has a very large wire from the battery positive terminal and to the same pole the yellow wire from the alternator and the permanent live feed to the fuse box is connected. #5 – Bad Alternator or Battery. This is a test that you can do with the alternator still in the vehicle and in this article I'll show you just how to do it. This is the wire for the charging light and is also used to help 'excite' the alternator into charging when you start your car. After all, you can't see electricity flowing through a wire, most people don't have a great deal of training in today's electrical systems and electrical components have a reputation for being finicky. If you do need to replace the alternator, try and spring for a new one—not a “remanufactured” one. If you do not see a dark blue wire, look for a common wire color on all of the solenoids. Refer to the Original Equipment Manufacturer’s service manual for specific information pertaining to your forklift. Anything higher is also bad too. Will a bad alternator cause the starter to go out. Higher resistance within a wire creates heat,. If it does not illuminate, ensure the gas gauge fuse is good. What are the symptoms of a bad alternator? What does your alternator do? How do you tell if your alternator is bad or your battery? Click to find out!. In general, if the charging system is working normally, the warning light should glow when the ignition is switched on and then extinguish when the engine is started. What are the symptoms of a bad alternator? What does your alternator do? How do you tell if your alternator is bad or your battery? Click to find out!. There are many possibilities for this. Bad alternator symptoms: Dim lights. Causes of a Bad Alternator. If your ground, field wire and B+ wire all come up good you have an internal alternator problem. (I would need to know year model to look it up to be sure. Excessive Heating. Checking the alternator is a relatively easy process. A voltage regulator maintains an even flow of electrical power to an automobile's electrical systems, including the headlights, dashboard components and the stereo. Why I like the alternator. What are some symptoms of a failed or failing voltage regulator? Does it slowly go bad or does it just stop working? Will the car still run with it going bad? I was thinking maybe my recent electrical issues may be related. The Durango just shut off & smelled burning wires. It's the ribbed, reinforced rubber belt that powers all the accessories, A/C, Power Steering, alternator and various other components in your car, truck, or SUV (depending on the make, model and year of the vehicle). The alternator's job is to recharge the battery while you're driving once the battery has started the car. Also, if the battery itself is bad, an alternator in working order won't be able to charge it. If you are experiencing problems with the electrical system, the alternator itself might be fine because the problem could be with one of the belts connected to the alternator. I would have thought that the symptoms would be lower volts reading, dimming lights, failure of the radio, and eventually stumble / dead. Symptoms: Lights flickering at times and/or Battery gets hot to the touch Possible Cause(s): Rectifier Symptoms: Battery won’t stay charged Possible Cause(s): Rectifier Battery Stator Ground Connections Brief description: The alternator is where it starts. Symptoms of a bad alternator can vary between different makes and models. Alternator should be ok with 13. If the alternator “sings” and your voltmeter jumps up to show charging voltage, the alternator is likely good and you must move your focus to the wiring leading to the regulator connection. Check the ammeter for an indication of excessive current draw. It caused battery to go bad and just got a call PCM fried by alternator failure. If a cable is bad then you can have a range of problems that make it seem that other components are causing a problem. com is not liable for any misunderstandings, errors or omissions regarding this information. I don't remember seeing anybody with a bad alternator on a lambda, but there are many reports of batteries going bad. I have no experience with a bad alternator on these cars, but I bought the car with 123K, it now has 172K, so the alternator is probably pretty old. Should be easy to tell. Worth checking before installing a new RR. Warning light. Remove positve battery cable. Bad starter-system issues are more common than you may think. Headlights Dimming More than Usual. So, the easiest way to check whether your alternator is working or not can be found below. This article originally appeared on YourMechanic. Not important at this moment. This is a completely repeatable result. I don't remember seeing anybody with a bad alternator on a lambda, but there are many reports of batteries going bad. With the motor running, and the alternator putting out power, the battery doesn't have much to do. I have a 250 amp jump starter and had an issue with a lawn tractor where it would not crank unless there was a battery attached to it even though the battery was almost dead. Weird Car Electrical Symptoms September and a fairly clear looking set of terminals. Slacken the nut on the square necked screw and push the alternator to the side, releasing the tension. And even though the plugs and wires are only 9 months old, inspecting them can tell you a lot about your motor. Upgrade your alternator wiring. The ignition switch is connected to a series of high-resistance wires and any of the terminals connecting these wires can overheat. The short term fuel trim (STFT) and long term fuel trim (LTFT) need to be checked with a scan tool to see if the air/fuel mixture is not too lean. We'll cover the symptoms of when an alternator goes bad, and how to diagnose a bad one (which is really pretty easy). Heat can also damage the rotor and stator windings, brush connections and wiring leads. Your vehicle starts easily with a jump-start, but only runs a few minutes until it stalls. This wire should be around 12V as long as the battery is below 13. think its the middle wire that has a faulty connection and stop the battery from charging. This is usually associated with low idle/near idle conditions. If your vehicle is behaving erratically and you have problems with it running smoothly, it could be showing signs of ignition coil failure. The connector on the end of the wire has broken off or corroded. Once stopped and turn car off, cannot restart. Hold onto the alternator when you pull out the bolt from the front. Make sure the cables connections at battery are clean and torque correctly. Any malfunctioning car part or device gives you indirect indications of its problems. 10SI Alternator Wiring. this will cause an intermediate connection also. I had a friend do the install I thought it was strange he had a jumper wire. It sounds like a bad starter though cause usually you would have to play with the terminals or the chassis ground to get the car to start if it was a bad ground. com 3 DVA Explained DVA stands for Direct Voltage Adapter, which is used to measure peak AC voltage. I would take off the seat and lift the carb tops off and check the condition of the diaphragms to make sure that there are no holes. NOTE: BAD STARTER SYMPTOMS ARE VERY CLOSE TO BAD BATTERY SYMPTOMS AND BAD ALTERNATOR SYMPTOMS You MUST have a fully charged battery for your starter to operate properly. terminal on the back of the alternator, (not at the battery). What are the signs of a bad Alternator? OK I have been having starter trouble for the past 4 months now, the battery is a year old and has never died (yet). The alternator is driven by a belt in conjunction with Smell of Burning Rubber. This is the ground wire. Alternator slippage and undercharging can also be caused by a bad alternator pulley. Jul 20, 2013 | Nissan Altima Cars & Trucks. Most Common Signs of a Bad Alternator 1. If the voltage reading on the meter display goes up while wiggling one of the wires, you've found a bad electrical wire or connection. Moisture (not salt water though) in the alternator seldom causes problems. So, the easiest way to check whether your alternator is working or not can be found below. The 14 gauge brown wire at the regulator is good or the dash light wouldn't come on. Most Common Symptoms of Bad Alternator The following are some of the things that can tell you that your alternator is bad. Thankfully both are fairly simple problems to fix. The symptoms with my alternator failure were; Low volume restriction (HSE) for 10-15 min in the am Overhead HID lights (8" visionx) were difficult to light Slow cranking I may have had a slight bit of noise from it, but the belt was due to be changed & could have been causing the sound I heard, or masking some sounds the alternator was producing. Last edited: May 24, 2014. If R/Y is not 12V you have a wire problem between the "engine" fuse and the VR. 2)Inspect the wiring at the alternator for loose connections and corrosion. Check the ammeter for an indication of excessive current draw. A poor ground connection will have the same effect on the sensor operation as a bad VRef supply. Only then can you be sure that your automobile has the energy it needs to run properly. Even with decent maintenance, the different system components get a lot of wear during their service life and are bound to start having problems eventually. Warning light. Symptoms of a Bad Alternator, alternator problems Symptoms of a bad alternator include hard or slow cranking when you try to start your vehicle, lights that seem too dim, and of course the red BATT, ALT, or GEN light glowing on the dash. It could be my computer or pulleys in the wrong too so I can't risk buying a new one and still having the problem. Otherwise, your alternator is functioning well. 5V for charging. The easy way to check a belt tightness (non-quantitatively, of course) is to press down on the belt with your finger at a point in between the two pulleys. Also test your B+ wire at back of the alternator (the large red wire). Most Common Signs of a Bad Alternator 1. Here are the four most common symptoms of a bad ECM computer: The Check Engine Light is on. Alternator/generator/regulator Problems of Lincoln Town Car Lincoln Town Car owners have reported 8 problems related to alternator/generator/regulator (under the electrical system category). This makes the alternator put out a higher voltage of around 14. Over time, the vapor can begin to corrode the terminal and cause corrosion to build up. When the car is running the alternator produces electricity and the voltage should be above 13. If your alternator fails, your battery will lose its charge since the alternator won't be able to keep it charged up. The first thing you want to do is to do a. see if the amount of current is to high. Bad alternator vs bad battery, which one is worse should not be the question. Symptoms bad alternator Your fusible link at your battery is bad,alternator is good,replace wire,follow it from alternator to battery,may be swollen or fried,like a green tomato,lol. 0 for a 1998 12v Dodge 5. Whether you're an Auto-Tech or not this information will help you to successfully diagnose a bad alternator WITHOUT the use of expensive testing equipment. If it had been the alternator, the car would have been running on pure battery and even with cables it would not have started as quickly. Anything lower means your alternator is bad. Alternator should be ok with 13. Anytime your vehicle has electrical problems, it can likely be attributed to either the car battery or the alternator. Turn the key on and the plug off, the exciter wire will have battery voltage along with the other 2. As you can see in the figure (the arrow), this circuit is the main wire that comes out from the alternator. I had saved your column on the Ford tractor coil problem and it really helped. Don't forget wiring and plugs as well. This type of measurement of AC voltage takes the absolute peak or highest value of the fluctuating AC. However, to really be sure that it is really your alternator that is the culprit, you should have it tested as soon as possible. Problems associated with this car part have a nasty reputation of going undetected, until it's too late. That dead spot you experienced could also be from a sticking starter relay/solenoid that could be going bad. The Smell of Hot or Burning Wires. Symptoms Of A Bad Serpentine Belt Just about every vehicle has a serpentine belt. A bouncing gauge was the first sign when mine started going bad. Remove serpentine belt Carefully stick a screw driver into the cooling fan to hold the internals still Rotate the pulley - it should freewheel in one direction and lock up in the other _____. The alternator on the towing motor vehicle is usually set to provide about 14V for charging. One is a big fat wire that goes to the battery, this is the alternator. If the diode is bad, the alternator will have a short in it and your battery will go dead. One end of the alternator's main output wire connects to the battery at some point. Alternator Wiring is Failing. Otherwise, your alternator is functioning well. The ignition coil takes power from the generator and relays it to the spark plugs. The most recently reported issues are listed below. You could also have an alternator regulator acting up. With some simple troubleshooting you can get back on the road fast. Also, if your battery goes dead, it's best to charge it fully before starting it. I replaced the convolute stock setup, with a large guage wire about 2 feet long, directly from the alternator to the battery, bypassing everything else, and saw approx a 1 volt increase at idle, indicating to me that the stock system was compromised by either age and bad connections, or just a bad design. An old alternator leads to erratic symptoms ranging from dimming or extremely bright dash lights and headlights to tachometers and speedometers that stop working all of a sudden. There are only a few ways an alternator can go bad, but they tend to happen suddenly without a lot of warning. I would take off the seat and lift the carb tops off and check the condition of the diaphragms to make sure that there are no holes. NOTE: BAD STARTER SYMPTOMS ARE VERY CLOSE TO BAD BATTERY SYMPTOMS AND BAD ALTERNATOR SYMPTOMS You MUST have a fully charged battery for your starter to operate properly. If your ground, field wire and B+ wire all come up good you have an internal alternator problem. Car's Electronic Operations Weaken While Driving. If it's ok, then the regulator must be bad. I was worried the alternator was fried or the PCM, but it has been fine now for 3 or 4 months. Re: Symptoms of bad rectifier? The stator under the flywheel is a two fold component. Mustang Alternator and charging system 1965 and 1966 This is a system which seems to be a prolific source of confusion and despair for people, but it is actually quite simple, once you understand it. Even if they exchange the battery I'm going to drive it over and have the alternator tested as well. Most Common Signs of a Bad Alternator 1. Bad Alternator Sign #5: Electric Failures Since the alternator is the primary source of electrical power in your car, electrical failures are signs that it is going bad. A bad connection to the battery on the voltage regulator "sense" lead could make the regulator think the battery isn't at full charge and make the alternator work harder than it should thus shortening. This is the Field wire. Anything lower means your alternator is bad. For Briggs & Stratton® engines, you can match up the wires and alternator’s configuration with your Alternator Identification Chart. Not important at this moment. You could also have a loose wire, or corrosion on the battery causing your charging problem. But in general the first area I'd check out with your symptoms would be the small red wire. You will want to address these problems immediately before they progress into something much worse. What are symptoms of a bad coil? reason i ask is, i did a new cap and rotor, new starter and wires and new fuel pump. A burning rubber smell becomes noticeable when the alternator is going bad because the alternator works with the belt system. Bad alternator symptoms: Dim lights. This would account for pretty much all of your symptoms. The typical lifespan of a new alternator should be between 5 and 7 years. Think of it as a water hose that has a. My alternator is not getting power from the battery The wiring from the battery to the solenoid and from the solenoid to the alternator is good is this a bad solenoid the car will start and run. I've had some issues with a rough idle, and had a loose connector having to be zip tied to the computer because it was loose and causing stalling. Could it be the alternator when it wasn't having any problems at all yesterday? Quick replies will be greatly appreciated. I suspect your battery is the problem, or a bad ground but if you've had the battery in and out that's probably not it. For wiring, be sure to use #16 or 18 wire (except as noted otherwise) for all connections to minimize voltage drops in the wire and insure the ability to start the engine under less than optimum battery conditions. It turns off my speaker amplifier as soon as I hit the. All it would take is for one wire to be disconnected or cut for power to stop being generated. ] One quick thing to check is the ground wire that goes from the alternator to the engine block. Alternators are connected to a car's battery in linkage with the starter, ignition relay, and fuse box. whenever you start your truck, the alternator will be on, as it is driven by a belt that is in turn driven by the crank shaft. Can you tell me were the fuel filters are located on a 2000 jeep cherokee sport 4. Once this was replaced I have not had a problem since. First, be sure you wear eye and hand protection, then with your Jeep engine running, remove the negative cable from the battery. New battery and new wiring harness and labor ~$360. 5 minutes with a wire brush and some wd-40= fixed problem. If it has been that long and you have electrical issues, then your alternator is simply worn out and needs to be replaced. These range from emissions problems to faulty O2 sensors to problems with the ECM. Another thread has me wondering what symptoms I should expect with a bad alternator and an MSD 6A ignition system. Next, check the wiring to the starter. Here are some other symptoms of a bad alternator. Take it somewhere good and have it tested. While the alternator tension is loose, you can remove the belt from the alternator wheel to check for bad bearings if you think this is an issue. Replace your alternator, charge the battery and see what happens. Remedy: Visually check the cars with above production dates to see if they have solid mounting. Could be a bad battery drawing it down (low internal resistance ). Here are the four most common symptoms of a bad ECM computer: The Check Engine Light is on.