Common Alternator Problems

1 and get alternator warning lol. Thought I'd draw up a list of faults on the Mk5. misaligned pulleys. One of the most common symptoms of a problem with the alternator is an illuminated Battery Light. The lock button when unlocked door in the top holds the position. Power losses and damage to the prime mover are avoided. Top 5 Causes of a Car Alternator Malfunction. The 1996-2004 GT has experienced some problems in recent years. from Honda vehicles. Free help for car problems, car complaints, recalls and car repairs. You can determine if that is the problem by doing a visual inspection of the engine compartment. Same goes for starter motors and batteries. Below is a list of some of the common problems found in the BMW e39, some of which can be caught during the BMW 1 and and BMW 2 Inspections before they become serious. today my alternator light come back on…. The old one had not totally died (11. Start by checking your battery first. 4 quarts (9. AutoZone review with 52 Comments: I have a 1998 dodge caravan. Also inspect the battery cable connections to make sure they are secure and clean so the power from the alternator can be delivered efficiently. The following notes come from my own experience combined with info from other sources, namely mechanics, parts counter people, magazines, and other owners. Im going to make a list of common problems I've seen on 7. I tested voltage at the battery with my voltmeter and its charging fine. The alternator is a belt-driven, round, metal engine component. The first I put in 2007, the second April 2010 and now the third June 2010. Another nasal cue of an alternator problem is a smell akin to an electrical fire. Later I went to do some shoppings, I got off the car and when I returned It just wouldn't start. Testing "spare" alternator When I bought the RV it came with a bunch of spare parts, and one of those was a spare alternator. The Honda CBX Charging System. How to Know if Your Alternator is Going Out Simple Tips for Boosting Gas Mileage Common reasons the check engine light comes on What is that Sound My Car is Making? Top Problems that Prevent Starting 3 Signs Your Car Needs Clutch Repair Top Symptoms of Trouble Under the Hood Top 5 Signs it is Time for Brake Repair Now!. COM — All cars and light trucks since the 2012 model year have come with standard traction. If you own a 1997-2004 Corvette and like to drive it a lot, chances are you are going to run into some common C5 Corvette problems. Indicators that warn of an impending alternator problem can include the dashboard warning lights, a growling or whining noise from the engine compartment, and the smell of burning rubber or electrical wires. Hyundai Veracruz Engine Problems. Common Alternator Problems. This article covers the most common and annoying issues with the 4th generation TL. This causes the alternator to overcharge the battery, which in turn can ruin the components that use electricity. The driver's window gets the most use and is usually the first to fail. Ford Mustang GT 1996-2004: Common Problems. 4 quarts (11. The battery, alternator, and rectifier/regulator all join forces to keep your charging system up to snuff. Its not easy finding out exactly which part of your car is giving you the trouble, but here are a few tips by which you can find out whether you have car battery problems or alternator problems. 0 Powerstroke Common Problems, Issues, and Fixes Are they really as bad as I hear? I would say 80% of the questions I get every week are from 6. Many of these common electrical problems in cars are fairly easy to fix. The first sign of BMW transmission problem is the Trans. i have no idea what this can be anymore im stumpedplease yall help me, i have no truck. If you find out problems earlier, in some cases only bearing replacing can solve the problem. What is the most common cause of alternator failure? The component that has the highest failure rate on most alternators is the Bridge Rectifier. This is a common test performed at dealerships and auto repair shops. If the alternator's output goes below or above a pre-set limit, then the dash light comes on. It is disgraceful that a car costing so much money should suffer problems like the ones we had. It is a simple and straightforward job. Thank you all for all of the help. Some common causes of alternator problems include wear and tear, a bad battery, a lost ground and a slipping belt. The following article was offered on the ‘net to assist owner-operators of certified aircraft (notably Pipers) live in harmony with their electrical systems. Page 1 of 4 - Common Problems/known Issues With The 350z - posted in 350Z General Discussion: This thread now also contains details of the improvements made to the 2006 'facelift' 350z and the 2007 model, for those people considering which to buy. The main dealer had not a clue what was causing the faults. Of course, there's a difference between an alternator's amperage "rating" and the amount of current that it can provide at idle speeds, which is why it's important to have a full understanding of how to read alternator output ratings if you have a. Air conditioning is now a standard feature in most vehicle manufacturing. Your alternator is your aircraft's primary source of electricity, and when it fails, you need to start making some decisions. Solution:. It is a new alternator that tests "good" at autozone and o'reilleys. Another symptom is an oil or refrigerant leak. The 12SI Delco alternator is a very good up-grade for many makes and models. The rough running problems are virtually gone with the new alternator. The alternator and voltage regulator are not maintenance items that have replacement intervals. However, like most cars bottoming out in value, it’s important to keep an eye out for a few common Saab 9-3 problems when shopping for your next Saab. To rectify the problem, a gold electrical connector should be used instead of the tin connector. They really want you to know there's a problem with the alternator. Click on the topic for more information about how to diagnose and repair these car problems: Engine & Driveability Problems: Check Engine Light On Troubleshoot Check Engine Light Got a Trouble Code? Most Common Trouble Codes (and their causes) Engine Oil. Lift the hood and inspect the alternator. If you are interested in having restoration work carried out on your 2CV, please complete our contact form. Sometimes alternator Bearing or Pulley Can Be Jammed and make a grinding or whining noise. Alternator Failure. This article covers the most common and annoying issues with the 4th generation TL. Find out what an alternator does in your vehicle at Lou Sobh's Honda of the Avenues. It seems that when I replaced the alternator choke I did not disconnect the battery and by unhooking it and hooking it back up it shorted the alternator internally. Warm air either blows out of your vents some of the time or all the time. Replied by Wayne613 on topic battery/alternator or fuse/relay problem Before bothering with a diagram or the like, test voltage on the B+ terminal with a DMM if you can get to the back of the alternator (to check before the fusible link that protects the rest of your electrical system from a faulty alternator or any short on that line). C6 Corvette: Common Corvette Complaints and Problems. For anyone with alternator problems search the web for armature repair shops in your local. I brought a new battery and replaced the alternator. Known Problems with the Nighthawk 1984-1986 CB700/750S. It can be hard to determine if you're dealing with a battery or an alternator problem. I had the old alternator tested on it was bad. Using our website search box for both tech help and products, enter the words of the solution. What Causes a Car Battery to Overcharge? Battery overcharging is a common problem in vehicles today. Further, the trouble shooting procedures do not first look at most probable causes with diagnostic. all sorts of crazy lights started coming on and off. If i crank my truck,then remove my battery cables, it dies instantly like the alternaor is faulty but everyone who has tested it assures me it is not the alternator! I even replaced the battery but my problem is still there. The housing is usually made up of two pieces of die-cast aluminum. Nissan Qashqai fuel leak problemSome diesel-powered Qashqais, built between January and October 2008 have had problems with fuel leaks. 0 TDI (55,000mi), but all other variants are welcome!. I have to agree with all the comments made so far, we had electrical problems each time the car was driven in heavy rain. So before you go into panic mode, check the earthing points for a good contact. To understand the difference, you must first learn about what causes an alternator to stop charging. As such, we always like to have more participation from family members. The most common of these problems are rotor bearing failures. I have a 2001 F150 4. In this case, either there is some internal problem in which the inverter circuit may need to be replaced or there is an external issue. 3's but never the 4. As more plates fail, the power drops to levels that will eventually cause the battery to die and the ignition system to fail. A problem that is not as easy to diagnose is overcharging, which occurs when the voltage regulator fails to limit alternator output. http://sparrowhawkmountainranch. While an automobile is running, the alternator is recharging the battery. If i crank my truck,then remove my battery cables, it dies instantly like the alternaor is faulty but everyone who has tested it assures me it is not the alternator! I even replaced the battery but my problem is still there. A properly rebuilt alternator is as good as a new alternator and can cost hundreds less than purchasing a brand new one. Why pay 200. They replace the alternator and it charges. Its not easy finding out exactly which part of your car is giving you the trouble, but here are a few tips by which you can find out whether you have car battery problems or alternator problems. Mechanical problems in the alternator typically involve the physical driving of the part rotor by the engine. The generated electrical energy is stored in the battery. As opposed to traditional solid pulleys, they allow the alternator to "free-wheel" or "overrun" every time the engine decelerates and, at the same time, dampen vibrations at the alternator. Yes good info. However, when a car has alternator issues it can often cause questions to rise. Other Electrical Problems The alternator is responsible for providing power to your car's different electronics. The image below shows the standard, small case, 110amp alternator on the left; with a heavy duty, large case, 160 amp alternator on the right. Finally, the alternator completes this cycle by charging the battery. There is much information that is accurate but some important points that are not accurate. This problem can usually be remedied rather easily with either a jump-start or a battery recharge. Primary Menu. com/public/qlqub/q15. Once the engine is started, your car's battery is recharged by the engine-driven charging system – the alternator takes energy from the rotation of the engine via a belt drive to supply the charge current. The most recently reported issues are listed below. Also, aftermarket electrical components and harsh driving conditions may decrease the lifespan. To understand the difference, you must first learn about what causes an alternator to stop charging. Often the first time you'll discover your alternator is faulty is when either the battery goes flat (there are several causes of this, not just alternator failure) or when the battery light comes on the dashboard. Before we even get started, I'm going to drop a plug for a soon-to-come post on why the N54 engine is better and more tuner friendly than a 2JZ. Check your. Visual Inspection:. If you're having problems with your power windows or locks, for example, they engage too slowly, it could be an issue with the alternator. Though they do not cause any immediate problem, it slowly degrades the car's performance and thus causes some extremely serious consequences. These typically result from over- or under-tensioned fan belts or simple wear and tear, and generally cause overheating of the rotor and eventual bearing collapse. The bearings on which the alternator rotates can also be at fault and hinder the alternator from providing an optimal performance. The old one had not totally died (11. If i crank my truck,then remove my battery cables, it dies instantly like the alternaor is faulty but everyone who has tested it assures me it is not the alternator! I even replaced the battery but my problem is still there. The rough running problems are virtually gone with the new alternator. Problems like squealing and grinding noises, low voltage outputs, and starting or dying issues can often be. I took it to PepBoys and they say I have a bad alternator. While an automobile is running, the alternator is recharging the battery. com/public/qlqub/q15. Most charging system problems will be corrected by performing the following steps. Go through this quick primer on solving electrical problems in your automobile, to get an overview of the procedure. Save on Denso Alternator F4000688873ND at Advance Auto Parts. Among the various common charging system problems you might encounter, one is a noisy alternator. once I turned the engine off I could not start it. Alternators are normally replaced as an assembly. /r/Subaru Official Discord. Note: These are my personal observations and comments. Sometimes alternator Bearing or Pulley Can Be Jammed and make a grinding or whining noise. I’ve purchased the top of the line batteries each time and now from several makers (currently an interstate). For further advice on the following issues phone our service department on 01772 299811 or email [email protected] However, in the event that your transmission does have problems, knowing what some of the more common types of transmission problems are can help you quickly diagnose and repair them. We’ve spoken to several specialists in the VW camper van scene to find some of the most common problems associated with the air cooled VW split screen, Bay Window and Type 25 vans. Thank you all for all of the help. These typically result from over- or under-tensioned fan belts or simple wear and tear, and generally cause overheating of the rotor and eventual bearing collapse. There are a number of reasons why this might happen, but one of the most common is that it isn’t getting enough electricity to start the combustion process. Common Starting Issues in Trucking Applications S o you think your starter motor is on the blink (again!), and with a full truck you're sitting idle by the side of the highway halfway between where you came from and where you want to be, with a deadline looming and a crusty and inconsiderate client. What are the common problems on a 4. Battery and alternator questions list. The battery common ground is a 10 gauge pigtail with the computer ground attached to it. Mechanical problems in the alternator typically involve the physical driving of the part rotor by the engine. Here's a rundown of the ones you'll want to know about and why. The starter can draw hundreds of amperes, a large alternator can source hundreds of amperes. The first time it happens and you have to get a new one, I would recommend upgrading to aftermarket rather than going back with OEM. One wire: Alternators that have one positive wire connected to the alternator has the ground connected to it’s case. There are three common failure modes of the CJ750 alternator system. Common problems with alternators. They really want you to know there's a problem with the alternator. view details; apr 08, 2010 - houston, tx - electrical system there appears to be a problem with the alternator on the 2007 ford focus. wiring has been checked the 3 thin wires from alternator and has been to main dealer who said the ecu may be faulty can some one help. It also has a brand new battery. If you experience flickering headlights, stalling or strange noises when driving, your car isn't haunted; chances are it's just a failing alternator. Nice road manners. Mercedes-Benz ML 320 Common Problems 1998-2005 W163 If you are looking to buy a used Mercedes-Benz, here is a list of the most common ML problems. The most recently reported issues are listed below. If the alternator's output goes below or above a pre-set limit, then the dash light comes on. once I turned the engine off I could not start it. Mk5 common problems – 08-07-2008, 10:47 PM. If you think you have a bad alternator, diagnose your problems with the alternator testing procedures below. For alternator whine, they're a patch at best, and if. 5 Common Problems that Prevent Engines from Starting Seeing as they are so simple to operate it is no surprise that many people often take their cars' function for granted. The housing is usually made up of two pieces of die-cast aluminum. There was a possibility that the alternators could develop a. Let Kent explain how his solutions finder works: "Just select the location of the problem you are experiencing, the chassis designation of your car and a few key. The old one had not totally died (11. € While this may. Should I get an extra battery dedicated to the speakers, or should i get a better alternator, or what?. I am looking at purchasing a 99 4runner tomorrow, could you all list things that are common issues that i should check out. The alternator is a belt-driven, round, metal engine component. Timber floors you can find many hues out-there on the market I am confident an item is to complement actually the wildest suggestions developers. There are usually two things that cause the battery light to come on after a battery replacement. worn out bearing. The dashboard lights are dim; The charging system light activates as you turn on the audio system, crank up the air conditioning, and engage one or more power accessories. This causes the alternator to overcharge the battery, which in turn can ruin the components that use electricity. On older models, worn or incorrectly fastened oil pan gaskets can cause oil to leak through. Pull the connector apart to inspect the terminals. If you own a 1997-2004 Corvette and like to drive it a lot, chances are you are going to run into some common C5 Corvette problems. The stereo's system ground or earth wire greatly affects the performance of the overall system, particularly the speakers. Toyota 4Runner Problems and Common Complaints Whether you already own a 4Runner or are looking to buy one, simply being aware of the most common problems this vehicle has can help you prepare or prevent. Common Peugeot Problems and Fixes. By Rick Popely. Find common car problems for hundreds of models from our list of 14,038 owner complaints. If you're having problems with your power windows or locks, for example, they engage too slowly, it could be an issue with the alternator. Over the years, we have found that the electrical wiring system connectors allow moisture to get deep down inside the. There have been at least nine updates to change calibrations and operation software for the 2011 models with the 3. It also has a brand new battery. I tested voltage at the battery with my voltmeter and its charging fine. Common problems with alternators. Over current fault on an alternator. If the prime mover fails, the alternator operates as a motor and drives the prime mover. The bearings on which the alternator rotates can also be at fault and hinder the alternator from providing an optimal performance. A problem that is not as easy to diagnose is overcharging, which occurs when the voltage regulator fails to limit alternator output. The battery has one primary function, which is to start the car. • S is used by the regulator to monitor charging voltage at the battery. Not charging, battery load teat is fine. The rectifier is the most common cause of alternator failure. Besides the gas gauge problem what else is there?I should be watching out for when working a deal on the car. I replaced my alternator last weekend, took no more than an hour. What Causes a Car Battery to Overcharge? Battery overcharging is a common problem in vehicles today. Common problems. If you think you have a bad alternator, diagnose your problems with the alternator testing procedures below. The battery common ground is a 10 gauge pigtail with the computer ground attached to it. How to Know if Your Alternator is Going Out Simple Tips for Boosting Gas Mileage Common reasons the check engine light comes on What is that Sound My Car is Making? Top Problems that Prevent Starting 3 Signs Your Car Needs Clutch Repair Top Symptoms of Trouble Under the Hood Top 5 Signs it is Time for Brake Repair Now!. Ford Mondeo 2001 - 2002 2. See our lemon odds and nada odds page to see vehicles with no repairs or vehicles with more than three repairs. For more free information fill out our request form, e-mail, or call (573) 334-2632 to speak with a friendly and knowledge professional available to answer all of your alternator questions. It's not very common, but it is possible. One wire: Alternators that have one positive wire connected to the alternator has the ground connected to it’s case. Meineke Alternator Repair Services. and I put the car in drive, pressed the gas and it felt like there was no power. If your AC suddenly starts making loud and usual noises, it may be the AC compressor. But if you have a newer battery and you're still having these electrical problems, then it's likely the alternator that is at fault. If your looking to purchase a truck with a no start look into these. Corolla performance alternators from AutoZone bump you up to between 13. A factory alternator (with the voltage regulator inside) may last 100k miles or more, however, it is not unusual for an alternator to fail closer to 80k miles due to its moving parts, heat, and internal components that wear. Experts Can Understand What’s the problem by hearing the Sound. 4v) but for the last year I was having all kinds of running rough problems. Another common cause of an interior light flickering is the voltage regulator. Corrosion at the battery terminals is a very common cause of a car that won’t start. The simple cure is to cut the brown connectors off. Ford Transit Common Problems Solutions Hints and Tips. There are usually two things that cause the battery light to come on after a battery replacement. AutoZone review with 52 Comments: I have a 1998 dodge caravan. Ever get your wires crossed? Wiring is another cause for alternator problems, but not nearly as common. I had the old alternator tested on it was bad. Any known common problems with the A4? On the engine, i've had alternator and injection pump go on me in that time and I had the cambelt done on 75000. Read and learn about its common problems, and solutions for the same. The factory harness is short (less than 1 foot) and can fray the wires in the terminals. In so much it was throwing sparks at times while being tested. BMW ALTERNATOR Problems and Faults. If an alternator is overloaded, it may overheat and fail (check for aftermarket sound equipment that may be overloading the stock alternator!). However, when you take your vehicle for a routine repair or checkup, the priority is usually the engine and other essential aspects of the vehicle Consequently, car owners often overlook developing issues that can impact their. Here at /r/Subaru we like to do things as a family. Let's say, you have problems starting your car and notice other problems with the electrical system. When assessing your street rod’s charging system, it’s important to understand how an alternator works and what. If you think you have a bad alternator, diagnose your problems with the alternator testing procedures below. Later I went to do some shoppings, I got off the car and when I returned It just wouldn't start. Its not easy finding out exactly which part of your car is giving you the trouble, but here are a few tips by which you can find out whether you have car battery problems or alternator problems. They really want you to know there's a problem with the alternator. Electrical problem 1999 Lexus ES 300 6 cyl Two Wheel Drive Automatic 70,000 miles I have had to replace my alternator 3 times in the last 6 months and it is dead again. On older models, worn or incorrectly fastened oil pan gaskets can cause oil to leak through. If you need more details information you will need to download another detail Ford alternator wiring diagram. In the early stages of alternator problems the light can seem to flicker — on for just a second and then off again. It also has a brand new battery. Diagnosing Alternator Problems - EricTheCarGuy Take the time to go through these steps the next time you suspect a bad alternator and you just may save yourself a trip to the auto parts store. The alternator cost will range from $200 to $700 just for the part itself!. A properly rebuilt alternator is as good as a new alternator and can cost hundreds less than purchasing a brand new one. I hope SRX fans will find their way here and discover this page useful as well as leave comments about problems they've experienced. Steering Wheel Shaking. The engine can even stall while driving. (The 200 can lose about two thirds of its coolant before having circulation problems). One of the more common and challenging problems you may encounter is a vehicle that needs an alternator, and after the replacement unit is installed, the charge indicator lamp remains lit even though it seems to be charging fine. For M272 or 273 engines, the plastic expansion plugs located on the back of the cylinder heads may need to replaced. Alternators are normally replaced as an assembly. Common faults: FAULT 1: OVERCHARGING THE BATTERY. This will void the manufacture’s warranty. Failed Emissions Test. I strongly advise you do your research before buying a FJ. It provides the high amount of voltage needed to turn the. Find common car problems for hundreds of models from our list of 14,038 owner complaints. Car part replacement is a common issue with many Minis. com with investigation, recall, and Technical Service Bulletin (TSB) information from the National Highway Traffic Safety Administration (NHTSA), we’ve put together a list of some of the most widespread problems out there. Your alternator is your aircraft's primary source of electricity, and when it fails, you need to start making some decisions. The Discovery 2 is one of the best vehicles Land Rover ® have produced but they are beginning to show their age. com/public/mz47/ecb. If you're unsure how to assess the alternator yourself then bring it to our expert technicians at Pep Boys to test for faulty components on your vehicle. Remove and clean all charging system electrical connections from the alternator through the batteries (this includes the ground side). Ford Focus Mk2 Common Problems Thread. Over the years, we have found that the electrical wiring system connectors allow moisture to get deep down inside the. Nissan Qashqai power steering problemPower steering problems have been reported on some Qashqai models built between August 2008 and August 2011. 9 Common Problems With 7. One of the most common problems that occur with the Pontiac Grand Prix and other GM vehicles is a burnt out window motor or a broken regulator. Over current fault on an alternator. First, examine the wiring for damage or wear and replace as necessary. It is disgraceful that a car costing so much money should suffer problems like the ones we had. Brakes Squeaking or Grinding. If you regularly drive in sub zero (F) weather. As such, we always like to have more participation from family members. Nice road manners. Fixing electrical problems is a skill that every car owner must possess. If the voltmeter on your vehicle's dashboard starts. xml Recent content on prevent on-water breakdowns in your boat Hugo -- gohugo. It can be hard to determine if you're dealing with a battery or an alternator problem. Not charging, battery load teat is fine. The Nu-Rex MaxR alternator pulley (included with any Nu-Rex alternator) and the replacement type Nu-Rex Hi-Speed pulleys have a special charcteristic that makes an improper fitting fan belt or a worn out fan belt very. A bad alternator is frequently the cause of dim lights when problems such as loose wire, a slipping belt or corrosion are not found. On older models, worn or incorrectly fastened oil pan gaskets can cause oil to leak through. There have been at least nine updates to change calibrations and operation software for the 2011 models with the 3. For M272 or 273 engines, the plastic expansion plugs located on the back of the cylinder heads may need to replaced. i just bought a brand new battery and alternator a month ago…. Fortunately, as long as you stay vigilant for signs that things aren't going as well as they could be under your hood, you should be able to spot any potential alternator problems before they get to the point where you have to call a tow truck. The best way to identify alternator problems is by conducting a bench test. The problems in the alternator or the charging system are quite common in the vehicle. voltage regular problems. The picture shows the common ground point for the battery & extra 3G alternator ground wire as described above in paragraph 2. Ford and Volkswagen MPV Forums » Forum » Large MPVs -- Ford Galaxy / VW Sharan / SEAT Alhambra: » Ford Galaxy / VW Sharan / SEAT Alhambra » Common faults and problems / Knowledge Base » Ford Galaxy - Alternator Replacement / Renewal (TDI). Common Mercedes Problems & Solutions If you have a problem with your older Mercedes and are trying to figure what is causing it or how to fix it, you have come to the right place. before it would always jump around on its own to 14. With over 20 years fixing Citroens and the latest diagnostic software, we know how to fix any problem your Citroen might be experiencing. 8's 2007-Current model year. There are many units that run a similar diagram to this one. Another issue we are seeing more of in our workshop on the Range Rover L322 is failing ignition switches. First, examine the wiring for damage or wear and replace as necessary. However, when you take your vehicle for a routine repair or checkup, the priority is usually the engine and other essential aspects of the vehicle Consequently, car owners often overlook developing issues that can impact their. 0 TDI (55,000mi), but all other variants are welcome!. Rebuilding the original alternator will retain a valuable piece of your classic cars history. MINI Cooper Part Replacement. There are several possibilities for causes of an oil leak on your Mercedes. The most recently reported issues are listed below. Alternator shaft chain breaks. worn out bearing. If the alternator fails any test category, your customer needs a new alternator. That isn't enough to keep your battery charged at 100 percent. Just wait until you have problems with the TIPM and learn that the ECU & majority of the wiring harness is mounted in the LF wheel well. As more plates fail, the power drops to levels that will eventually cause the battery to die and the ignition system to fail. A simple turn of the key and you can be on your way to Anywhere, USA by pushing a few pedals with your feet and keeping a grip on a steering wheel. There is no corrosion on the cables, but I noticed the last time this happened that the positive cable terminal was extremely hot and the stock red rubber around the cable end was starting to melt/burn. Dispite all this I hear my alternator squealing again. It’s easy to misdiagnose these problems as being a bad battery instead of a bad alternator. anything it was over-sized when compared to the charge capacity). One of the most common problems that occur with the Pontiac Grand Prix and other GM vehicles is a burnt out window motor or a broken regulator. • S is used by the regulator to monitor charging voltage at the battery. An excessively worn or loose alternator belt can produce foreign sounds, as can an alternator belt that is out of alignment. This is more common on the 300 TDi than the 200. A relay detects the reversal of power direction and switches off the alternator. Before we even get started, I'm going to drop a plug for a soon-to-come post on why the N54 engine is better and more tuner friendly than a 2JZ. Yep, you've definitely got a problem. Problems with vehicle starting or charging could be caused by a worn out alternator, a dead battery or a starter problem. Fixing electrical problems is a skill that every car owner must possess. The best way to identify alternator problems is by conducting a bench test.