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24 Apr 14, 09:17 am

Author Topic: My headlights flicker...what does that mean?  (Read 8476 times)

My headlights flicker...what does that mean?
on: Aug 20, 2009, 01:34 pm
My headlights started flickering lately...does that mean I need a new battery or something?  That battery is pretty new and did put in an electric fan.  But I also have a 130 amp so what's going on?  I first noticed the needle on the battery meter bouncing up & down and then noticed my headlights were doing the same thing...ugh.

Mike

Re: My headlights flicker...what does that mean?
Reply #1 on: Aug 20, 2009, 02:07 pm
My Camaro (I know sin,sin) does this and I was told it was the voltage regulator or the alternator.
08 Modified GT Cpe, 66 Gt Cpe, 91 Camaro RS, 00 Honda F4

Re: My headlights flicker...what does that mean?
Reply #2 on: Aug 20, 2009, 04:44 pm
Easy way to test is to plumb in a voltage tester ($3 harbor freight multimeter) and see if your voltage is wandering all over the place.  The fox headlight switch is a kludge of epic proportions on Ford's part, so it could be having it's own issues.

Check the whole system first, and then diagnose the headlights individually if you're pulling a nice steady ~13.7v on the main system.

Re: My headlights flicker...what does that mean?
Reply #3 on: Aug 21, 2009, 10:22 pm
Thanks.  My 93 isn't what it used to be  :pissed:

Mike

Re: My headlights flicker...what does that mean?
Reply #4 on: Aug 23, 2009, 11:49 am
Easy way to test is to plumb in a voltage tester ($3 harbor freight multimeter) and see if your voltage is wandering all over the place.  The fox headlight switch is a kludge of epic proportions on Ford's part, so it could be having it's own issues.

Check the whole system first, and then diagnose the headlights individually if you're pulling a nice steady ~13.7v on the main system.

 +1 on the headlight switch. Ive seen many go bad and most seemed to either flicker or go off for awhile and come back on like they overheat. My 4 banger cars went out so bad that it actually melted the switch and plug together and I had to cut/pry them apart.
91 Mustang LX hatch 5.0 turbo, 05 Mustang GT vert
 My cars and a few other projects mixed in
http://s128.photobucket.com/albums/p181/myfordsfly/my%20cars/  http://s128.photobucket.com/albums/p181/myfordsfly/

Re: My headlights flicker...what does that mean?
Reply #5 on: Aug 24, 2009, 12:40 am
Yeah I've been lucky with just the headlights on but when the Fog lights are on on my GT the lights will flicker...but again that's from Ford's poor wiring technique with the Stang's fog lights... :kibosh:...fun cars...far from perfect lol

Re: My headlights flicker...what does that mean?
Reply #6 on: Aug 24, 2009, 01:59 am
Are the headlights "flickering", so they turn off and on real quick, or do they get dim and then bright again.
:mobbing:
1987 GT 
1999 Cobra Mustang -Eibach lowering springs -steeda Tri-ax short shifter -MAC longtube headers - MAC o/r prochamber - magnaflow catback exhaust - 90mm MAF - Ford Racing 4.10 Gears -BBK 65mm TB -MM CC plates -Bilstein shocks/struts -JLT RAI - Ported matched upper intake - 18x9 Cobra rims

Re: My headlights flicker...what does that mean?
Reply #7 on: Aug 28, 2009, 11:10 pm
The headlights just flicker...but, I was running with the stock air intake and I switched it to a MAC CAI today and the flicker almost went away.  It flickers a little now and the battery meter needle doesn't bounce around as much.  What's that about?  Weird stuff.

Mike

Re: My headlights flicker...what does that mean?
Reply #8 on: Aug 31, 2009, 09:32 am
Sounds like you may have moved around some wiring that may have a short or a bad ground somewhere.

 


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