Headlights and Fog lights pulsing???
#2
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Sounds like a bad rectifier in the alternator. A problem I am currently suffering from although right now it's minor.
So... yea, sounds like it's getting time for a new one for both of us.
So... yea, sounds like it's getting time for a new one for both of us.
#5
Originally Posted by Country Boy
Mine used to do it and my GFs does it. I fixed mine by blowing up my motor and letting the alt. sit on the shelf for 16 months.
Its usually from a bad voltage regulator which = new alt.
Its usually from a bad voltage regulator which = new alt.
Damn. Time to start thinking about an alternator.
Last edited by 1CAMWNDR; 01-20-2005 at 10:13 PM.
#6
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My lights always flicker when I first start up the car, the fog lights seem to be the most noticable. My interior lights do it a little too. I thought that it would be the ground for the battery. I have cleaned all of my grounds to my battery and it does not really help. My voltmeter doesn't move at all.
Don't worry about it, my dad's '01 Corvette does it too, and so does my uncle's '03 Z06 so it seems that it is normal...
Don't worry about it, my dad's '01 Corvette does it too, and so does my uncle's '03 Z06 so it seems that it is normal...
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#11
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I just recently had the same problem, headlights flickering, especially with stereo on, (aftermarket amp etc). Dash lights would flicker after a while, and when i would hit the brake pedal it would dim lights.
Bad voltage regulator...which is inside the alternator.
Changed alternator to 145 amp, and put in new battery, biggest i could get. Problem solved. Still has some very slight dimming when the brake lights come on, only when i have accessories running, like lights, stereo, heater, and rear defrost.
Bad voltage regulator...which is inside the alternator.
Changed alternator to 145 amp, and put in new battery, biggest i could get. Problem solved. Still has some very slight dimming when the brake lights come on, only when i have accessories running, like lights, stereo, heater, and rear defrost.
#12
Originally Posted by RhinoTA
I just recently had the same problem, headlights flickering, especially with stereo on, (aftermarket amp etc). Dash lights would flicker after a while, and when i would hit the brake pedal it would dim lights.
Bad voltage regulator...which is inside the alternator.
Changed alternator to 145 amp, and put in new battery, biggest i could get. Problem solved. Still has some very slight dimming when the brake lights come on, only when i have accessories running, like lights, stereo, heater, and rear defrost.
Bad voltage regulator...which is inside the alternator.
Changed alternator to 145 amp, and put in new battery, biggest i could get. Problem solved. Still has some very slight dimming when the brake lights come on, only when i have accessories running, like lights, stereo, heater, and rear defrost.
#15
Originally Posted by black00TA
if your lights are dimming when you hit the breaks and when your revs drop it could also be a tensioner problem. often overlooked.
#17
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I had this problem too!! (Mine's Fixed!)
My lights were all flickering, and eventually the RPMs would drop suddenly and the car would almost die (this is slow speed, stop and go traffice in Houston, mind you - it was fine cruising along between the stoplights)
Took it in under the GM Certified Used Car warranty and they replaced the alternator and one connector - the service rep mentioned something about the connector causing the alternator to go bad - maybe a TSB on this somewhere?
Anyway, mine is fixed. Good luck with yours.
Todd
Took it in under the GM Certified Used Car warranty and they replaced the alternator and one connector - the service rep mentioned something about the connector causing the alternator to go bad - maybe a TSB on this somewhere?
Anyway, mine is fixed. Good luck with yours.
Todd
#18
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Originally Posted by 1CAMWNDR
Will one of the 6.0L truck alternators (140amp) bolt right onto the bracket of an F-body?? A new 140 amp Duralast from Autozone is $159 + core. That's only $10 more than the 102 amp F-body alternator.
!! Good idea, i may go to autozone and compare the 2. Someone needs to look into this also!
#19
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mine will do this on cold mornings or nights when i get it out. while letting it warm up i notice the lights flickering slightly, but once its warmed up it goes away. so we should check the volts coming from the alt? i'll look at it, but i am not so sure its not a battery problem either.
#20
I had the SAME problem with my car when I bought it just 2 months ago. The alternator needed to be replaced, but it wasn't as bad as draining my battery; it flickered my lights when I drove for a while and blew a few tail lights. If you have some type of warranty make sure you tell the mechanics to check the alternator when it's hot, they originally told me it was fine because they checked it with the engine just turned on. If it gets worse, you will have serious electrical problems, and your new battery will be shot.