Charging System Problems and Potential Causes, IV. Alternator problems are not uncommon after a few years of operation. If all that turns out okay, check the battery. Inspect the belt for signs of cracks, cuts, shiny spots, deterioration or other signs of wear or damage. With all due respect, the comment you made about "QUIT COMPLAINING" was bit harsh. Any ideas as to what the problem could be? Answer: Make sure the harness clip or connector is not damaged or broken. This other post may help: I been jumping my battery off every time I go somewhere for over a week i thought it was my battery but it was my alternator i put a new one on and it's not holding at 14 or more when its running i also turned on my lights and more i got rid of my other battery cable it had a fusible link and I put on one that didn't would that make a. I was hoping you could give me a better idea of what kind of wiring and where it might have burned out? Dan Ferrell (author) on September 07, 2019: Probably the nut holding the stud to the rectifier is loose. At home, with the transmission in Neutral or Park, increase engine speed to the same rpm and see if the light comes on. Squealing, buzzing or grinding noises coming from the engine may be caused by bad alternator components, a loose or worn-out serpentine belt, or a faulty belt tensioner, loose alternator pulley or mounting bolts, worn bearings, or faulty diodes. If you do not know how to remove and install an alternator, then you can hire a mechanic to do it for you and you will be charged a minimal fee of $70 to $120. 4 alternaters relaced in 4 weeks. The belt is good, connections are good. Now I am confused. You might want to ake a look at the wiring diagram at the repair manual for your model. In addition to starting trouble, a worn alternator can impair the overall driving experience. The battery seems to stay around 13.7 volts what could be causing the light to come on randomly? Make sure the belt has the proper tension. Sometimes a sensor may cause this problem as well. Make sure it’s still in good operating condition. I've gone through 5 alternators in about 6 yrs. As like our remanufactured units, every new alternator is tested prior to leaving our facility. Remanufacturing is an affordable alternative to a new system but more expensive than a rebuilt system. Could this be a PCM issue? I need to understand why the alight is not on when the alternator is not charging? What could be the problem? I took it to an Interstate battery shop to have the battery checked out. You might want to check the coil or have it checked. 5. flicker on and off intermittently during acceleration and deceleration. You may need to replace the alternator. It's running at 12.80 volts constantly. They should be clean and tight. Having trouble finding exact issue on my 05 ford escape. Ford Mechanic: Drew , Super Mazda Tech replied 10 years ago Hard to believe that the alternator was charging 14 volts to the battery, like you said in the description, and it had a faulty regulator. It’s simply not there yet the alternator is not charging . they cut corners and you get signal noise With your 14.2 volts / this noise goes strait through the batter to the power train compooper and screws with pressure reg sensor and dash temp controls. And the battery doesn't get the required charge. Test for voltage drop on the grounds, battery and charging system. Question: Battery tested fine, but alternator voltage would go up and down. https://axleaddict.com/auto-repair/Alternator-Problems-Troubleshooting Starter motors are high-torque motors which must have the ability to turn over, or crank, an engine under varying weather and mechanical conditions. Car manufacturers recommend replacing the tensioner at the same time you replace the drive belt. Also, check the belt and pulleys. The alternator is at the heart of the charging system of your vehicle. I believe is the same model. (to get the 7 alternators out the door of the store it took them testing 5 others most the time to get one that passed on the bench)i finally got my money back after the fourth one and went over the store managers head and put a reman motorcraft (ford oem brand for you that dont know) its now been on just a month shy of 3 years and just over 62k miles no as much as a hicup... after this i ordeal i stopped buying anything from them just bc they have poor knowledge and customer service skills reason enough for me with out even mentioning poor quality products. DB Electrical Alternator. I replaced it with a remanufactured (not rebuilt) one and found it worked for about 10-15 minutes before it decided to quit. Check your meter display. Thank you for sharing your opinion and experience. Change the belt and belt tensioner at the manufacturer's recommended interval. My corolla 2e battery light remain even when the alternator is charging. Thus, the American Muscle Car was born. Question: I've got a 1982 Chevy K10 6.2L and I swapped the alternator. Question: I installed a new 105-amp alternator in my 1982 Chevrolet C10. Did they tell you how the alternator failed exactly? New Parts; Remanufactured Parts; Core Charges; New Or Remanufactured, It's Your Choice; Starter motors and alternators have a tough job. A year later, I noticed the lights started to dim, then to fade back up. And tested the battery with the car running and the battery stays around 13.7 volts. Everything I find points back to Autozone. I changed the battery, alternator and I am still getting a check charging system message. Many people purchasing RVs have no real camping experience, so RV campgrounds are being inundated with requests for their people to do things that are the RV owner's responsibility. When I start the AC fan and the AC compressor, the voltage increases to 15.8 volts. alternator was changed even the one changed out tested fine Napa still flatlined im lost now. Hasn’t effected driveability. So i replaced the alternator. Do you have any ideas? Ive changed the alternator 3 times. I have a Hyundai i10 year 2010, my car have a 13.3V charge (idle) when I switch on headlamp and AC at the same times, radio will on and off for 1-2 seconds (idle), headlight will go dim when radio is off. Last year, the car didn’t want to start, so I replaced the battery. are often greaty aggravated by the installation of a "remanufactured" alternator. This post will give you an idea about how to go about it. Can you give me some pointers, please? Dan Ferrell (author) on November 22, 2018: There could be a problem in the charging system. Otherwise you can check the repair manual in your local library. Check all the fuses and check for trouble codes. Answer: Check the alternator, perhaps a bad voltage regulator. What happens behind the scenes will shock you. Exchenged for a different alternator and the problem lights went away. If necessary, have your starter motor or starting system tested. Check the cable for damage, or a problem at the connectors. I purchased a NEW (not reman) unit which failed after about three hours - the front pulley fell off derailing and ruining the belt. Your reading should be at least 0.5 volts above base voltage for your system to keep up with electrical system demands. I just installed a new alternator and new battery. The battery light would come on at idle, and then when I reached approximately 2000 rpm, it would go off. Do you know where I can find a visual of where all the grounds are on this truck? What can cause this problem? It is a good idea to have on hand the vehicle repair manual (or a good aftermarket manual) for your particular car make and model. They need to re-evaluate the failures, and work to improve the quality of the product. It will work fine at times, then at other times the voltage steadily drops, especially if I turn the lights on. Hope this helps. It's possible the vehicle's diagnostic system is causing the light to come on after replacing the battery and/or alternator. If your vehicle is equipped with a heated windshield, don't turn it on; this can make alternator voltage go over 100 V. Since you'll be working around alternator connections, this could be dangerous. Occasionally, a BATTERY SYSTEM FAILURE light will come on. If you don't have a scanner get a free scan from your local auto parts store. Answer: It could be a faulty alternator or battery. I think their prices are lower because they stock the lowest bid equipment from suppliers. When inspecting the drive belt, check for adjustment. WHEN THE GENSET RUN WITHOUT LOAD THERE IS AN ALARM HIGH VOLTAGE BATTERY 30.2V . I was following you until you said "Chinese" . Dan Ferrell (author) on October 11, 2018: Sorry, I'm not familiar with the system, but probably this might help you. Now repeat the test, but this time, connect your meter leads between the battery negative post and the alternator case. Light dim and radio and everything turns off as battery drains is that my alternatoe. As you drive the car, you can monitor the voltage to see if the alternator is putting out over 13v at all rpm's. Start with the parasitic drain issue. Answer: If you don’t have the repair manual for your specific model, check your local public library. Instead of using a voltmeter, you can have an assistant watch the indicator light on the instrument panel to see if it turns off as you wiggle various wires and connectors. So I missed another day of work, hopefully the next alternator they had to order is a better one. Hi Dan got a 2017 pathfinder battery light cane on car stop moving . And have an assistant raise engine speed to about 1500 RPM. Usually, the first sign that your charging system is in trouble is a "battery," "ALT," or "CHARGE" warning light illuminating on your instrument panel while driving. Installed a voltemeter to read battery output and is always 12.4-12.6 off and 13.6-14.1 on. If necessary, have the alternator checked. Hope this helps. If the computer regulates voltage output in the system, check there too. “It’s important to find good, quality parts,” Gunning says. This will be my third rebuilt alternator that I'll have to put in. You can replace it with an original one from your dealer, an aftermarket replacement, or a rebuilt unit. Ask an assistant to start the engine and hold engine speed at about 2000 RPM. Question: I have a 2011 Mazda 3, 2.5. If your particular model has a fuse (check your repair manual) it may be blown. 3. The price of a new alternator can run from $500 to $1,000. It’s in a 2008 Chrysler 300c 5.7. hardlymoving from Memphis, TN on June 22, 2020: Easiest way to check for alternator problems is to install an accessory port / cigarette lighter plug LED digital voltage display. That'll help you diagnose the problem, if there's one. This other post will give you an idea on how to go about the test: Question: I replaced the original alternator on my 2015 Kia Forte. please help me. Troubleshooting for Unusual Charging System Voltage Drops." You don't need a lot of money to start selling classic cars, you just need to buy the first car at a good price and then do it again. Answer: If there are any DTCs, clear them from the computer memory. It should spin freely - if there's noise or the pulley feels rough,noisy, you'll need to replace it. I cannot get the wiring connector to snap back into the receptacle on the alternator. I'm out of ideas? What do I do next? Also, the check the engine grounds. Purchase any other brand but Delco. If you get a reading below 12.4V, charge the battery before continuing. All bad regulatets The 4th is bad now. There's a special circuit for the battery indicator on the dashboard. New Wilson alternators are designed for customers who demand the reliability and performance we have proven on our remanufactured offerings. (96 Suburban, 5.7L) I've had numerous quality issues with Autozone parts. Have the alternator checked before replacing it. Before you blame your battery, or the alternator, here are some preliminary checks you may want to do. The result of too few diodes is a shorter service life. Question: Can the dash charging gauge on a '67 Pontiac Catalina cause the charging system not to work? Bad grounds can eventually, damage the alternator. Belt should have the proper pressure. Worse, the unit failed in the middle of nowhere, 190 miles from home. But you may want to run a voltage drop test on the circuit first. Make a Visual Inspection of the System. Question: I have an 03 Dakota. These other posts may help: Have 06 scion tc replaced alternator with a 05 that was in junkyard said they tesed it but battier still does not charge. When one or more diodes go bad, AC can leak into the electrical system. I will never step foot in another Autozone. What does that mean exactly? Answer: There could be several causes behind the issue: bad alternator, bad voltage regulator, bad connections between the battery and alternator. Answer: Check the circuit connections. On some newer models using the incorrect battery can affect the alternator, especially those that interact with the ECU. Question: I had my alternator rebuilt. Look for corrosion at the connectors, damaged wires, and burned and missing insulation that might suggest an electrical short. In this case presume that all connectors are protected and not exposed, not dirty, rusty, oxidized, compromised, etc ....and in excellent conditions. So consider your options. Alternator problems and charging system problems can affect your vehicle in different ways. I am not sure what this means I'm assuming an under charge but I'm not sure. Make sure they are good. Can you help? Answer: I don’t think brake fluid in itself will cause much damage, but the additives may once they break down. This can lead to an over-charging condition. I tried Pep Boys...Number 4 was a good one...in just a months time...FOUR REBUILT ALTERNATORS! Problem remains that there's presumably some underlying condition that's causing this premature failure to be repeated. Here's my advice (after reading reviews on rebuilt alternators). Here is how you can find free air, and also how to set your tire pressure for the best performance of your tires and your car. If it's good, check the charging system circuit tested. With your voltmeter test leads, touch the positive battery post and the B+ terminal connector at the back of the alternator. Repairing your alternator is easy and cheap! Hope this helps. Answer: Knowing how the previous alternators failed can give a clue about the type of issue you are dealing with (electrical, mechanical). This could be a loose or bad wire/connector. A charging system voltage drop check can help you locate the source of an under-charge or over-charge condition due to problems in the wiring or connections between the battery and alternator. Answer: Check all the grounds -- battery to body and body to engine. Often, engine grounds or loose wires or connections in the circuit can cause this problem. running AC fan at high) or a drive belt that is putting unusual stress on the alternator pulley (mechanical)(make sure the belt is not too tight). See the "Checking for Alternator Noises" subsection further down in this article. Although the construction of some brands will vary slightly, the basic anatomy of an alternator consists of the same components. Username and password will be sent to you via email. When your tests point to an under-charge or no-charging condition: Noise can be a sign of alternator problems when it comes from the charging system. Answer: Make sure you are using the correct battery for your application. Answer: Usually, the voltage goes down under load and as the engine warms up. Need to know what does the spade connecter go to for 1982 bmw 320i on the alternater. They should be clean, tight and in good condition. Even the Chinese make a better product and care more about their customers. Answer: The alternator could be faulty. If I only switch on headlamp / AC, charge will maintain 13.8-14.2V. The alternator is an essential part of your vehicle's electrical system. I have a 2012 kia sorento. A typical alternator may last anywhere from 8 to 12 years. You do this by measuring system voltage while loading the system. Thought it was fixed but now the battery is dead and won’t recharge. Also please check out the statistics and reliability analysis of Ford Explorer based on all problems … Answer: If you have some power amplifier, or some other power accessories, this could be running down the battery if the alternator can’t keep up with the demand. You can also do a voltage drop test on that part of the circuit. Thank you! With the motor running, and the alternator putting out power, the battery doesn’t have much to do. Rights Reserved, You Are About to Contact PissedConsumer.com, I have read and agree to the Pissed Consumer. They replaced the Alternator. Could there be something causing the part to go bad so quick or could it just happen to be bad parts? Alternator quality can be another factor of course. I don’t have the manual for the model. This other post may help: Also, check engine grounds, if necessary: Question: I have a 1990 Ford F-150 and the alternator stays hot and won’t charge the battery, any suggestions on what is wrong? If the insulator is damaged, you'll probably need to replace the alternator, unless you can install a new battery stud kit. Take a voltage reading across the battery posts. What could be the problem? Why does the light come on and not go out? Answer: Probably you are dealing with an alternator with worn brushes. I replaced both. Other potential problems are a faulty voltage regulator or a problem in the charging system wiring. If the alternator or charging system was faulty, it could've damaged the battery.
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