Author Topic: Only Speedo working (Read 3790 times)

Wizard · « **on:** September 30, 2010, 08:23:50 PM »

Only thing that is working on my instrument cluster is the speedo..
When ignition is turned on the only idiot light I get is the ABS warning light...No other bulbs initiate. When I first start the car, the tach will initiate for about 5 seconds then drop to 0..Fuel and temp gauge do not move. No service indicator lights either.
First I thought the SI board took a dump..Swapped out cluster with working one....Still the same exact problem..Only speedo works...
Usually pretty good with this crap as I had the car around 7 years now....This one has me stumped...

Also not sure if it may be related, but blower motor is not working and the A/C and recirc lights do not come on when pushed..Not really sure if this happened at the same time the cluster failed or not..Just noticed that problem today..

Any ideas?

?

91 318is..

DesktopDave · « **Reply #1 on:** September 30, 2010, 08:40:41 PM »

I'm at a loss, never seen anything like that. Did you check the grounds under the dash above the pedal cluster? I wouldn't think it's a fuse since you still have the speedometer.

Blower motor not working at all? Or just on high? I'll take a look at a wiring diagram & see if I can figure anything out.

dvmotorsports · « **Reply #2 on:** October 01, 2010, 03:10:00 AM »

I have the exact same problem. I also have a thread about it. I've swapped in 3 or 4 clusters. Mine is clearly a wiring problem. I just have to figure out where and why.

Wizard · « **Reply #3 on:** October 01, 2010, 09:03:04 PM »

DAMN DAMN DAMN....It was a friggin blown fuse...#10...Wasn't blown in the middle like they usually do...Was near the top and couldn't see it in the poor light...That will teach me to check them with a tester like I usually do...
That also fixed the blower motor not coming on...

DesktopDave · « **Reply #4 on:** October 01, 2010, 09:45:43 PM »

Glad to hear it's solved. Stock BMW fuse, or replacement?

Wizard · « **Reply #5 on:** October 02, 2010, 08:25:42 AM »

Replaced replacement fuse with replacement....lol

dvmotorsports · « **Reply #6 on:** October 04, 2010, 11:35:10 AM »

Wow, for some reason my problem was the exact same. I just automatically figured that the fuse was good since the speedo worked and the ETK said the entire cluster was on #10. Clearly it's not.

I still have to swap in a new fuel gauge though. The cleaning of the ground nut did not work.