Also check and make sure your cable ends are clean and tight. I have taken it back to pepboys a couple times they said they could never find the problem ( once the cars stopped and parked for a few minutes the battery light goes away like nothing happened) and that its a wire issue and they can’t fix that. (You must log in or sign up to reply here. IIRC 13.7 volts is normal for these cars. Anybody have any ideas? We realized the alternator ate up the battery since we couldnt jump it. Recently i noticed that when driving and engine reaches above 2000rpm my lights begin to flicker, dashboard, dome lights, headlights, everything. The alternator is responsible for providing power to your car’s different … This vehicle has some age to it, so it may just be a weak serpentine belt tensioner. No lights were on the dash, drove it for about thirty minutes and suddenly all dash lights started to flicker on and off like crazy, barely made it home. Registration trouble? The more i change in speed specifically accelerate or even go up hill, the more the car seems to loose charge? Also everytime we check charge on batt and alt , its pushing out -perfect everytime. Please use the "Contact Us" link at the bottom right corner of the page and your issue will be resolved. Usually it is not a fuse link, but use a test light and check that you have current at the main terminal on the alternator. I would do the multi meter test…and also have an assistant move the plug on the alternator (engine running) while someone looks at the dash…if the alternator light flickers with someone playing with the plug…then it is just the charge indicator light/plug or a wire broken near that plug. If you add relays on the fender well, going directly to the positive battery cable via the starter solenoid, you will make a low resistance path to the lights. NEW Alternator and flickering light tech bulletin. Any ideas? At this point the light is completely on and not flickering off at all. Put in a new alternator today and it’s getting 14+ constant. 13.8 is plenty of voltage to 'float' the battery and still run all the necessary car loads - the "smart" chargers in marine applications use exactly that voltage (13.8) as a normal full-battery running figure, but our cars traditionally stay in the low-mid 14's. Hi guys, So this what we did. So after 500 dollars spent I am taking it to ford dealership in the morning. Took only a day for it to shut down while driving. I put the new alternator in however it did not fix the battery light from coming on. My lights are bright and I’m not having any trouble starting. Battery light is still on. Bad, dirty or loose alternator belt. Check the alternator/generator with a voltmeter. This should make your lights maximally bright all the time, and decouple them from the alternator output. This should make your lights maximally bright all the time, and decouple them from the alternator output. Okay boys so im really lost on this once. Powered by Discourse, best viewed with JavaScript enabled, New Battery New Alternator Lights still flicker. The oem alternator lasted until last year, so 22 years. So new batt and alternator. Other Electrical Problems. Just some things to check I would do the multi meter test…and also have an assistant move the plug on the alternator (engine running) while someone looks at the dash…if the alternator light flickers with someone playing with the plug…then it is just the charge indicator light/plug or a wire broken near that plug. A fault with the alternator is probably the main reason for a battery light to flicker. I'd check the light grounds first though. I tried to find the same bulletin and only found a pre service bulletin for flickering lights. I took it into the shop and they tested my alternator and they said it was bad. The most common reason for flickering lights is a worn out alternator, as one of the three rotating plates that generate electricity wears out. I bought this vehicle as is. Another source of the electrical gremlin is where the fuse box gets its power feed…be sure that is tight and not faulty. Before it failed, no weird lighting issues. The battery light is on but the voltmeter says 13.5 to 14.5 volts depending on the engine revs. Ive already spent $1000 for the new batt alternator and labor. Testing so far. I checked the alternator which was bad, producing less than 4 volts. Flickering or pulsing dash lights certainly indicate a problem with your car, but determining the exact cause is usually a job left to a mechanic with the right tools to test the electrical system of your vehicle. very steady now at 14.3v dash lights and gas light flicker (still have 1/3 tank full) Gas light stays very dimly lit after flickering at startup then the clock and second (digital guage) dashboard lights flicker. However, that doesn’t explain the dash flicker…The flickering dash lights can be caused by a faulty dash light dimmer switch, which is common…move the dimmer up and down and be sure it seems stable and doesn’t induce flicker. The abs/traction, check engine lights and many others can come on due to a low voltage, or high voltage problem. I have a 2008 Saturn Vue , in summer of 2018 the vehicle started to have flickering lights, ac turn off and on etc and was becoming hard to turn on. If I do 4-5 back-to-back restarts, the battery starts getting weak. I can have the a/c on max with all the lights on and put the too down and I still don't get low voltage at idle. Anyhoo, replaced the alternator today along with the belts & oil stand gasket, and when I went to start the truck, lo and behold I had the same exact symptoms as before: Flickering battery light for a few seconds immediately after cranking, and then it goes away. Discussion in 'Intermediate CJ-5/6/7/8' started by John_pro2a, Jul 18, 2007. What can it be ? Now i have the battery from the m3 which i know is good in the car and a new alternator. Loose or dirty battery cables check both cables both ends. The voltage for the vehicle checks out and is what it should be. They're bright, nothing flickers at all. And check the circuit fuse for the radio. When engine is off the volts drop to about 12. cathy on June 01, 2019: I have a 2013 ford fusion and all the lights on my dash came on then everything just went black. Bad cables. 81% Upvoted. They tested the new alternator before I got it and it looked good showing 14.3 volts. The new alternator may be faulty, but there’s a chance the alternator isn’t the real problem. somewhere in the headlight circuit, and you're seeing the voltage fluctuate with the alternator speed. Brand new alternator same problem and i dont think its the battery. Tested voltage. Bought a new alternator due my old one FAILED the test. if the alternator is a cheape from autozone, kragens,etc I would suggest having it replaced with a quality part, like I said bosch or genuine volvo. If you do the fuse links are fine, so next check your belt tension this is something that is overlooked often and is the cause of flickering alternator lights. i just replaced the alternator and got the car running and saw that the battery light now stays on. i have an 03 crv and before i replaced the alternator, the battery and srs light would flicker on and off. My mechanic says that the alternator must be charging - but why is the light on? Same fix listed in text and it does not apply to vehicles newer than 2005. And I checked it I was getting 11.9-12.2 at all rpms but never had issues. It means your battery has taken over to keep the electronics working. Generally, flickering dash lights indicate an alternator replacement, but this is often confused with a starter replacement. I drove it around, shut off the engine and was able to restart it. The battery voltage reading is best taken directly at the battery terminals, and if it is 12.5 volts just after switching off the engine that is is a marginal reading. At idle the battery reads 13.58v, at idle with the lights and all electronics on it reads 13.28v, the gauge cluster shows 13.6v with the lights off, and with the car off the battery reads 12.25v. That has to be an automotive regulator design. MPA’s (Motorcar Parts of America) expert Bob Felix will show you some simple diagnostic tests to find the true source of the issue. But now my lights inside are flickering along with brake lights. Dan Ferrell (author) on August 19, 2020: Have the battery checked to see if there was any damage. My 97 Cobra still has the oem bulbs from Ford in it. they said bad voltage regulator. o have a 2000 chevy silverado 4.3 i put new alternator and battery and relays but yet its still dragging where dose the one wire go to from the alternator and why dose it keep dragging. A steady DIC voltage of 13.8 is not really that low, on the scale of things. Diagnosing Common Automotive Charging System Problems got charging tested by autoparts store. The battery light symbol lit up recently in dashboard, I put in a new battery but it turned out the alternator wasn’t charging the battery so I replaced the alternator with a new one and I’m still having the same problem. 13 comments. Took it to pepboys since they could replace the alternator quick. Alternator. From your description of voltage checks after the new alternator was installed the alternator is working as it should. I still had to jump off the car but it started and seems to run fine with one acception...the dang battery light is still on. Those are possibilities. It's probably blown. But once I sustain a steady speed it does not, and eventually lights stop flickering. Cool. ). However, if the meter and lights are steady and not flickering, moving from 13.5 to 14 volts is not uncommon when coming off of idle right after start up.
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