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headlights dimming..??

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Old May 9, 2005 | 01:24 AM
  #1  
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From: hudson Nc
Default headlights dimming..??

i recently got a 99 frc, and i've noticed that the headlights dim while breaking, and periodicaly while driving. the volt meter shows 14. something and drops a number while breaking. i just wondered if this is a problem anyone else has noticed. one thing which may affect it is that i believe the fan has been set to run about non stop.. i cant say what temp it comes on at, but the car runs pretty consistently around 194 deg.
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Old May 9, 2005 | 01:56 AM
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the headlight issue is very common, i have it too... its very annoying. Im not sure on a fix... maybe someone will chime in



red
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Old May 9, 2005 | 03:15 AM
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Mine does the same thing. When I first had the problem I had the battery checked and it was going bad. Added a new one and the problem went away for a few days then came back. Don't worry about it.
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Old May 9, 2005 | 03:32 AM
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Ground Points are corroded. Clean them all - there are 2 for the headlights.

The first is a little black box on the drivers side of the engine compartment next to the alternator and bolted to the frame. The other is on the passenger side between the battery and the engine under the plastic divider.

Also make sure that your alternator ground is clean - it grounds through the top pivot bolt.

EG
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Old May 9, 2005 | 09:17 AM
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my car does the samething, and yes, that's really annoying... I will have to go home and try what EnglandGreen said. Thanks for the tips!!

Andy
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Old May 9, 2005 | 10:53 AM
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thanks guys, cant wait to check em. guess i need to put some pictures of the ride up soon as well
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Old May 9, 2005 | 12:56 PM
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Thanks for the tip.
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Old May 9, 2005 | 01:18 PM
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I’m not surprised that EG would be right of top of this subject. He’s probably got a separate power plant for the neon.
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Old May 9, 2005 | 10:18 PM
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funny, but i hope he's right
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Old May 9, 2005 | 10:49 PM
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my lights dim when the air pump runs...THEN BAMMM get the P0410 code right after...then I clear it and go on with the rest of my day.
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Old May 10, 2005 | 02:51 AM
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Originally Posted by FallenWhun
my lights dim when the air pump runs...THEN BAMMM get the P0410 code right after...then I clear it and go on with the rest of my day.
In that case, disable the air pump. I disabled mine....maybe that's why I never notice dimming...
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Old May 10, 2005 | 03:12 AM
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Originally Posted by EnglandGreen
Ground Points are corroded. Clean them all - there are 2 for the headlights.

The first is a little black box on the drivers side of the engine compartment next to the alternator and bolted to the frame. The other is on the passenger side between the battery and the engine under the plastic divider.

Also make sure that your alternator ground is clean - it grounds through the top pivot bolt.

EG
Great information. I'l have to check those tomorrow as my headlights do the same thing.
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Old May 10, 2005 | 01:11 PM
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how do you disable the air-pump? in doing so will I get a big back hand at emissions testing?
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Old May 10, 2005 | 02:16 PM
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Originally Posted by FallenWhun
how do you disable the air-pump? in doing so will I get a big back hand at emissions testing?
Use tuning software. Tell the computer not to report codes, and it'll still pass startup tests that'll allow it to pass the OBDII smog test.
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Old May 10, 2005 | 03:02 PM
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99 FRC and I have the same problem.
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Old May 10, 2005 | 04:23 PM
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Had same problem with my 98....on my car it turned out to be where the wires from the batt. and alt. hook up to the starter....the connections were alittle lose and the conectors were corroded...took them off the starter....cleaned with a wire brush and hooked back up tight.....no problems with the lights dimming since.

Hope this helps.
JAck
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