home register FAQ memberlist calendar

Go Back   Turbobricks Forums > Mechanical > maintenance & nonperformance

Reply
 
Thread Tools Display Modes
Old 05-31-2019, 07:47 AM   #1
15A
World's Oldest Brewery
 
15A's Avatar
 
Join Date: May 2004
Location: OH-MI....just like it sounds
Default 240: Odd electrical happening

92 sedan - everything working perfectly. No accidents or leaks. Grounds all tight and clean. Then all of a sudden headlamps go off, no dash or interior lights, no radio.

Whats more - the door chime comes on when the glove box is open (no light either). Hazards dont work but the turn signals do.....and the chime comes on then too.

I have read similar issues on various sites with most 'solved' but never a final post as to what they did or what caused it. IIRC fuse 5 was usually involved. Am wondering if its another 'too much on one circuit'. Headlamps could be relay / wired direct to relieve it if so.

I have had headlight relays (small one in dash) fail or someone use the wrong one and the dash lights and headlamps are all out of sync (this one is the correct one). Has to be something like a relay or fuse to do this all of a sudden and for no other existential reason. Volvo is infamous for overloading circuits that eventually show themselves.

UPDATE: Issue has been solved. Turned out to be a blown Fuse 10 from a defective chime module. Go figure.
__________________

(IF YOU WANT ME TO LEAVE YOU FB AFTER THE FACT, JUST SAY)

I didn't sleep well last night so I made my coffee this morning with Red Bull instead of water.
I got halfway to work before I realized I forgot my car.

Last edited by 15A; 06-04-2019 at 08:04 AM..
15A is offline   Reply With Quote
Old 05-31-2019, 08:05 AM   #2
woodenpudden
lacks goats
 
woodenpudden's Avatar
 
Join Date: Sep 2005
Location: Princess Anne, MD
Default

I've never had your particular issue but that fuse box is a mess, lots of potential for bent connectors to touch each other if you've been back there yanking on stuff. Start pokin' around with a test light and a wiring diagram, I'd reckon
__________________
Quote:
Originally Posted by DMFWallace View Post

Flunt delivers!
woodenpudden is offline   Reply With Quote
Old 05-31-2019, 11:29 AM   #3
bobxyz
Board Member
 
bobxyz's Avatar
 
Join Date: Aug 2014
Location: Boulder, Colorado
Default

That's some funny symptoms. Fuses 7,8,9,10 are all tied together on one side, with fused sides feeding brake lights, courtesy lights, hazard lights, radio, power windows. The common side has a big red wire to the battery junction box.

Without disturbing anything, I'd check the voltage (to a nearby ground) on both sides of fuses 7,8,9,10. I'm guessing that your red junction box to fuses 7-10 wire is bad, but I can't yet explain the door chime going off. After checking voltages, spin the fuse if just one is bad.

Edit: for '92 it may be a brown wire instead of red -- they went back to red in '93. Before '92, fuses 6-10 were from a red wire. Also, check the voltages with headlights or hazards on. If the connection is poor, it may show OK voltage with no load, but bad voltage when loaded down a bit by lights.

Last edited by bobxyz; 05-31-2019 at 01:08 PM..
bobxyz is offline   Reply With Quote
Old 05-31-2019, 12:00 PM   #4
apachechef
Burnt Sierra Madre
 
Join Date: Jan 2009
Location: Fort Joe Smith, Klendathu
Default

open glovebox causes the chime in my 1993 245. thought it was expected behaviour.
no other faults.
huh.
__________________
Quote:
Originally Posted by lummert View Post
Dammit, Lummert.
Quote:
Originally Posted by Jesse8931 View Post
Well keep us updated on how your dumbass plan goes.
apachechef is offline   Reply With Quote
Old 05-31-2019, 12:50 PM   #5
ZVOLV
<Master Tech>
 
ZVOLV's Avatar
 
Join Date: Nov 2002
Location: California
Default

I would suspect fretting the the junction block under the hood inside the driver side fender. I would pull the terminals and maybe add some dielectric grease.
__________________
No Start Thread
ZVOLV is offline   Reply With Quote
Old 05-31-2019, 10:33 PM   #6
15A
World's Oldest Brewery
 
15A's Avatar
 
Join Date: May 2004
Location: OH-MI....just like it sounds
Default

^ Good ideas.
15A is offline   Reply With Quote
Old 06-01-2019, 10:28 PM   #7
IansPlatinum
Board Member
 
IansPlatinum's Avatar
 
Join Date: Jul 2018
Location: Texas
Default

Not sure if it could be this, but I had some weird issues related to door chime and other electronics that ended up being a worn out key ignition switch. Try wiggling your key (car on, parked, not moving) gently up and down, in and out, and most importantly, rotate slightly clockwise and counter clockwise, not enough to reengage starter or kill the engine, but as much as you can get away with. See if there's any change... IIRC there's lots of pins on the back and the internal switching contacts can get worn out. The pins on them can also get carbon build up and act funky. I've read the carbon build up can happen due to the practice of 'checking' the alternator by disconnecting the terminal from the battery. Bit of a pain in the neck (literally) to replace, if you should have to.
__________________
'96 854 Platinum - "Trusty"
'92 245 - "Boat"
'71 145 - "Rusty"
'73 1800es - "Sunny"
IansPlatinum is offline   Reply With Quote
Old 06-02-2019, 08:48 AM   #8
15A
World's Oldest Brewery
 
15A's Avatar
 
Join Date: May 2004
Location: OH-MI....just like it sounds
Default

This car had a NEW blue box OE Volvo switch installed at one time that turned out to be bad - was replaced with a known good one that had been in a car for about 20k.

From what it looks like, there is a brown supply line to the junction box on the fender that is affiliated with every system affected. What or why anything happened with it - dunno yet. My guess is the chime is a back feed through a ground or something.

If its something as to too much on a circuit, I'll probably wire the headlamps into relays and reduce that much at least. Craziest thing as there was no indication of anything developing and MANY times its been driven at night with radio blasting, etc. to overload or blow a fuse.

Thanks for the input
15A is offline   Reply With Quote
Old 06-04-2019, 08:04 AM   #9
15A
World's Oldest Brewery
 
15A's Avatar
 
Join Date: May 2004
Location: OH-MI....just like it sounds
Default

Issue solved. Original post updated. Thanks for the input guys.
15A is offline   Reply With Quote
Old 06-06-2019, 12:09 AM   #10
Otto Mattik
Board Member
 
Otto Mattik's Avatar
 
Join Date: Dec 2015
Location: Upper Midwest..more or less
Default

Quote:
Originally Posted by bobxyz View Post
That's some funny symptoms. Fuses 7,8,9,10 are all tied together on one side, with fused sides feeding brake lights, courtesy lights, hazard lights, radio, power windows. The common side has a big red wire to the battery junction box.

Without disturbing anything, I'd check the voltage (to a nearby ground) on both sides of fuses 7,8,9,10. I'm guessing that your red junction box to fuses 7-10 wire is bad, but I can't yet explain the door chime going off. After checking voltages, spin the fuse if just one is bad.

Edit: for '92 it may be a brown wire instead of red -- they went back to red in '93. Before '92, fuses 6-10 were from a red wire. Also, check the voltages with headlights or hazards on. If the connection is poor, it may show OK voltage with no load, but bad voltage when loaded down a bit by lights.
Thanks for this information
__________________
Quote:
Originally posted by Jack
You talk about parts cannon but you throw the Obamacare diagnostic tool orgy onto this like it's a cloned embryo of baby Jesus
_________________________

Desperate need of elf assistant for interior work - Cash/Beer option $


Feedback Link: forums.turbobricks.com/showthread.php?t=323689
Otto Mattik is offline   Reply With Quote
Reply

Thread Tools
Display Modes

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is On

Forum Jump


All times are GMT -4. The time now is 12:33 AM.

Powered by vBulletin® Version 3.8.11
Copyright ©2000 - 2019, vBulletin Solutions Inc.