Instrument Cluster elec problem?(x-post)

Peter Schulz pcschulz at
Mon Jul 18 17:30:31 EDT 2005


You likely have an issue with the ground plane in the IC.

Here's a keeper:

Try whacking the top of the dash just to the left of the fuel gauge...
If that works, its time to solder ;-)


At 03:41 PM 7/18/2005, Beer, Jerald S. wrote:
>I am trying to chase down what appears to be a short in the instrument
>cluster (IC). This started recently and randomly would occur. It now
>occurs all the time.  When the running lights or headlights go on for
>the first time, the high beams come on also. If I shut off and turn on,
>headlights or running lights come on properly, but both turn signal
>indicators remain lit on the dash, and the computer screen for mpg, etc
>has no lights. I note the high beam indicator also does not work.  All
>other lights seem good, including light above rear license plate. After
>pulling the IC and using an old partial IC from a 90 200q,  that the
>problem seems to be the plug above the fuel gauge. When I use the old
>IC, no light problem. The pins all look like they line up OK, and I
>sprayed contact cleaner. My radio recently died, fuses look good, so I
>am assuming that is unrelated (maybe hidden fuse in radio).  Any
>suggestions from those more electrically inclined?? The IC is now on
>Velcro (or should be) I am getting pretty good at getting this thing in
>and out!!!!Thx.
>91 200qa
>200q20v mailing list

1991 200 20v Q Avant Titan Grey
1991 200 20v Q Avant Indigo Mica
1991 90 20v Q Red
1990 CQ silver (awaiting S2 engine transplant)

Chelmsford Ma, USA 

More information about the 200q20v mailing list