Finicky Tail Light
#1
Posted 03 March 2006 - 08:22 PM
#2
Posted 03 March 2006 - 08:28 PM
sounds like you have a loose connection/bulb.
2007.5 Chevy Duramax. Built Tranny. EfiLive. Twin Turbo. 600whp / 1000 ft lbs.
#3 Guest_AlvinL_*
Posted 03 March 2006 - 08:55 PM
#4
Posted 03 March 2006 - 08:56 PM
"i can read most any drivers moves and react accordingly. plus its halrious when they're maxed out and u draft by them like a cakewalk." - HTownTurbobrick
Chris | 95 850 Turbo | ITS SLOW
#5
Posted 06 March 2006 - 03:48 PM
#6
Posted 08 March 2006 - 07:38 AM
I'm not familiar with Volvo electrical, but from electrical point of view, it doesn't make much sense. Is there some other piece of information missing from what you read?
Replacing both sides would ensure same brightness if old and new varied in resistance, but I doubt you'd notice it if they were a little different.
As for your current issue at hand, it may not even be the bulb. Check for corrosion on the contacts. Even if they look half good, try scraping the contact gently and see if that helps.
If it's the bulb, you can tap it gently and see the filament move. If it's broken you can usually see it.
#7 Guest_TAThomas_*
#8
Posted 22 March 2006 - 04:11 AM
+1000
Chase ideas all you want but spend a dollar on a bulb first. My third brake light was doing the same thing for about 3 months and I was too lazy to change it, took the car to get inspected and got charged 5 dollars for a bulb
96 854R IPD ECU - Turbo XS dual stage MBC - Samco - Koni - 16T angled -OBX - R mani - IPD CAI?
13.7x @ 103 mph with automagic
94 855 Turbo.... In a state of cryostasis

#9
Posted 22 March 2006 - 07:43 PM
Seems like an earth fault to me. Fairly common on the 850.
Remove the bulb holder and take the bulb out. Looking into the hole you will see two contacts. At the bottom is the live which should be shiny, if it isn't scrape any dirt/corrosion off it. Around the circumference of the hole should be two semi cylindrical earth contacts. Working from the end of the hole where the live contact is insert a small screwdriver under one of these and very gently ease it away from the plastic. Do not move it too far or the bulb will not go back in.
This has worked for me on rear, brake and indicator lights which were showing the same intermittent fault as yours.
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