Lights fluctuating
#1
Lights fluctuating
Hey all,
So I have a 1990 240 DL and the lights are all fluctuating, including the headlights and it's quite a problem for me. I have already put in a brand new voltage regulator on the alternator and I am stumped as to what the problem could be. Reving the engine does not solve the fluctuating but does lessen it. The battery is less than a year old.
So I have a 1990 240 DL and the lights are all fluctuating, including the headlights and it's quite a problem for me. I have already put in a brand new voltage regulator on the alternator and I am stumped as to what the problem could be. Reving the engine does not solve the fluctuating but does lessen it. The battery is less than a year old.
#4
Voltage on the battery with the car off is 12.70 volts. Voltage with the car running on the battery is around 14.4 volts, and it seems pretty constant. I cleaned the positve and negitive battery terminals and hookups today with little result, I will clean the alternator connections tomorrow and try that.
#7
#8
You have ~14v with all the lights on? And all the lights fluctuate, including the tail lights? Do you have a 8000W sub-woofer in the back?
The negitive (blue) battery terminal should connect to the frame/body in 2 places - clean those connections.
Clean all the fuses in the fuse panel.
Remove the round (red) bulb failure relay under the dash, above the driver's feet and clean the pins.
The negitive (blue) battery terminal should connect to the frame/body in 2 places - clean those connections.
Clean all the fuses in the fuse panel.
Remove the round (red) bulb failure relay under the dash, above the driver's feet and clean the pins.
#9
I thought brushes came with a new VR. They did with mine.
http://www.fcpgroton.com/product-exe...ategory_id/112
http://www.fcpgroton.com/product-exe...ategory_id/112
#10
Oh yes the regulator came with new brushes, i never realized that's what they looked like. The amplifier for the subwoofer is only 300w RMS. I will clean the negitive terminals today on the battery. I get ~14v on the battery with the subwoofer going full blast and the lights. And the lights always fluctuate even when the gas is applied, it only lessens.
#12
LOL ... At least it wasn't a 8000W whatever. I need to post a picture of the thumpin' stock AM radio installed in mine. With the two 4" door speakers.
#13
The problem is there whether EVERYTHING is off including the amp or OR everything is all on. It never stops. So the amp is irrelevent! I checked the grounds on the battery and cleaned + sanded all the contacts onto the engine and body with no results. I am quite confused by this problem still and any help is apreciated. The alternator is more than 80 watts, my headlights alone would be 65
Last edited by everkeen; 05-02-2009 at 04:56 AM.
Thread
Thread Starter
Forum
Replies
Last Post
240, alternator, bad, brushes, fluctuate, fluctuating, headlights, lights, location, regulator, symptoms, voltage, volvo