Headlights and dash lights dim for a second...
Headlights and dash lights dim for a second... I am not sure if its the air pump or what but all the lights dim for a second going down the road...just cruising not punching it or anything...also does it when I start at night and push the accelerator a few times...thats what makes me think it might be the punp cause I can hear it cut on when they dim.Any ideas?I was going to put a UD pulley on but worried it would make the problem worse...
my car does this sometime also...your air pump isnt supposed to be on when your driving down the road, it will usually cut off a few seconds after your car is getting warmed up....the electrical systems in these cars are very tempermental and dont hold load very well....the light issue i really wouldnt worry about though, unless it gets worse
TECH Senior Member
Joined: Dec 2001
Posts: 5,399
Likes: 3
From: Jacksonville, FL
You can temporarily remove the AIR PUMP fuse under the hood and see if it goes away. It'll throw an SES light but won't hurt driveability, and after replacing it the light will go off by itself after 3 cold ignition cycles. Believe it throws P0412.
On The Tree
Joined: Nov 2005
Posts: 184
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From: Los Angeles, CA
Originally Posted by ZROCWS6
Yeah mine does this too sometimes while cruising. Thought I was seeing things at first.
Good thing I came across this thread. 
Joined: Nov 2001
Posts: 34,627
Likes: 2,543
From: Schiller Park, ILL Member: #317
Originally Posted by joenels
I am not sure if its the air pump or what but all the lights dim for a second going down the road...just cruising not punching it or anything...also does it when I start at night and push the accelerator a few times...thats what makes me think it might be the punp cause I can hear it cut on when they dim.Any ideas?I was going to put a UD pulley on but worried it would make the problem worse...
Oh yeah, same thing happens (to a smaller degree though) when the cooling fans kick on. It's only noticeable at idle though.
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Staging Lane
Joined: Jul 2005
Posts: 90
Likes: 0
mine used to do that for a long time then the cgeck gauges light would come on then i realized the bat. gauge was real low. my problem was with my alternator. check you voltage when it does that i had all kinds of flickering going on!
Just got my camaro today and the drive home at night was a bit scary. I have a 98 auto, the thing I noticed was I see a a light right on top of the temp gauge go on for a fraction of a second then the lights on the interior go dim and the headlights go bright WTF? amp gauge is around 13 or 14 all the time. Any Ideas? my 1st F body Im a mustang guy converted over.
Same thing here...to me it seemed like it was the fans kicking on, I always noticed it on a dark road at night long after the AIR pump shuts off...I wouldn't worry about it unless you have any other electrical probs.
