Lights "pulse"

[Tim]

I don't know why it does this, but at night when my lights are on, they noticeably go in a cycle of dimmer and bright when idling or at low RPMs. I don't have any large electrical loads on the car, and the alternator was replaced right before I bought the car.

Any ideas?

This isn't mission critical, but it's one of those things that just bugs me...


Regards,

Tim

[HappyMom]

I'm no expert, but sounds like an alternator problem. I had the same problem in my '91 Jetta. Check your battery voltage. On my Jetta it was overcharging at something like 14.7V

[FB71]

mine does that, too. On mine, its the efe heater for the carb cycling on and off. But, its still cold here. BTW, I resent that "thing".....

[Tim]

I know the alternator isn't a Festiva one, because the replacement alt. was welded to the bracket.

Regards,

Tim

[nonamekid]

Make sure the belt for the alternator isn't loose. It will cause the lights to dim at idle.

[Tim]

The belts are on there really tightly - recently I replaced the drivebelt because it was threadbare. I used a prybar as a lever to tension it and you could bounce a cinderblock off it... :lol:


Regards.

Tim