Notices
928 Forum 1978-1995
Sponsored by:
Sponsored by: 928 Specialists

Speedometer, Odometer, Fuel Gauge Stopped Working

Thread Tools
 
Search this Thread
 
Old 04-14-2017, 01:02 AM
  #1  
poindex30
Racer
Thread Starter
 
poindex30's Avatar
 
Join Date: Jan 2003
Location: Clarksville, MD
Posts: 276
Likes: 0
Received 0 Likes on 0 Posts
Default Speedometer, Odometer, Fuel Gauge Stopped Working

Hi All,

I took off the driver's side door panel to change my door stop strap. I drove the car around with the panel off for a little while with no problems. I finally got around to replacing the door panel this past weekend and as soon as I started up the car to go for a test ride the odometer, speedometer, fuel gauge and pretty much everything stopped working including the digital display. The only thing that works voltmeter.

Could I have damaged something reinstalling the door panel to cause this to happen?

I've checked all of the fuses and it appears there is no fuse or relay that controls the instruments in the dash pod.

Any help you may offer will be greatly appreciated.
Thanks
Old 04-14-2017, 01:17 AM
  #2  
GlenL
Nordschleife Master
 
GlenL's Avatar
 
Join Date: Jul 2003
Location: Minneapolis, Minnesota
Posts: 7,635
Received 14 Likes on 13 Posts
Default

Clean the grounds. I'd start with the one on the steering column under the pod. It's a stack of, maybe, 8 connectors on a 6mm stud. (10mm nut) Look underneath on the left side of the column.
Old 04-14-2017, 07:25 AM
  #3  
poindex30
Racer
Thread Starter
 
poindex30's Avatar
 
Join Date: Jan 2003
Location: Clarksville, MD
Posts: 276
Likes: 0
Received 0 Likes on 0 Posts
Default

Thank so Glen. I'll try that when I get home this evening.
Old 04-14-2017, 01:17 PM
  #4  
soontobered84
Rennlist Member
 
soontobered84's Avatar
 
Join Date: Mar 2002
Location: Texas
Posts: 5,943
Received 265 Likes on 186 Posts
Default

Originally Posted by poindex30
The only thing that works voltmeter.

I've checked all of the fuses and it appears there is no fuse or relay that controls the instruments in the dash pod.
The oil pressure gauge should be working also.

IIRC, it IS a fuse as I have had the same symptoms, replaced the fuse and everything is right with the world again.

I think the fuse is #24, but I could be mistaken. Somebody will chime in to confirm or correct.
Old 04-14-2017, 01:47 PM
  #5  
FredR
Rennlist Member
 
FredR's Avatar
 
Join Date: Jun 2005
Location: Oman
Posts: 9,703
Received 666 Likes on 543 Posts
Default

I think you will find it is fuse 25.

You probably earthed the power feed to the courtesy lamp- ask me how I know!
Old 04-14-2017, 06:24 PM
  #6  
soontobered84
Rennlist Member
 
soontobered84's Avatar
 
Join Date: Mar 2002
Location: Texas
Posts: 5,943
Received 265 Likes on 186 Posts
Default

Roger that Fred. My car is an 89 and it is fuse 24, but on a 90 it is fuse 25.
Old 04-14-2017, 07:19 PM
  #7  
poindex30
Racer
Thread Starter
 
poindex30's Avatar
 
Join Date: Jan 2003
Location: Clarksville, MD
Posts: 276
Likes: 0
Received 0 Likes on 0 Posts
Default

Hi FredR, What does it mean to earth the power feed to the courtesy light? That may have happened because now the passenger side light just above the fuse box stays on very dimly all of the time. I just noticed it last night. The digital section of the dash also stays very dimly lit all of the time. It sounds like ti need to check the fuses again and possibly take the driver's side door off again. I'm still at work so I'll have to take a look at it later tonight.
Old 04-14-2017, 10:24 PM
  #8  
jheis
Burning Brakes
 
jheis's Avatar
 
Join Date: Sep 2003
Location: Wine Country, CA
Posts: 1,166
Received 10 Likes on 6 Posts
Default

Originally Posted by poindex30
Hi FredR, What does it mean to earth the power feed
Short to ground.
Old 04-15-2017, 12:27 PM
  #9  
poindex30
Racer
Thread Starter
 
poindex30's Avatar
 
Join Date: Jan 2003
Location: Clarksville, MD
Posts: 276
Likes: 0
Received 0 Likes on 0 Posts
Default

You guys are geniuses! When I originally checked the fuses I didn't see any named "dashboard" "speedo" or anything that resembled what wasn't working so I figured it had to be something else. Sure enough #25 was blown! The fuse is labeled as "Diagnoses Connector Current Pulse Tailgate Inside Light". I bought a 7.5 amp fuse and now everything works perfectly.

Thanks for everyones help! I greatly appreciate it.



Quick Reply: Speedometer, Odometer, Fuel Gauge Stopped Working



All times are GMT -3. The time now is 04:42 AM.