The separate grounding wire is essential on these cars, as there is no
provision for ground in the electrical plug for the unit, and the logic
circuits are very poorly designed TTL logic, notorious for noise
vulnerability. I isolate the ASDM from the inner fender with insulating
washers and add a #14 wire to the ground lug on the alternator. There is a
much more complete discussion of this in the IML archives, but this is
really all the information you need.
Dick Benjamin
----- Original Message -----
From: Kurt Piepenburg* <trukkcp@xxxxxxxxxxxxxx>
To: <mailing-list@xxxxxxxxxxxxxxxx>
Sent: Wednesday, September 04, 2002 7:04 PM
Subject: IML: 81 ASD grounding
> I saw a reference on the archives a while back about running a seperate
ground
> lead from the ASD module housing to the ground stud on the intake
manifold.
> What do you do? Tap a new screw into the ASD box and attach the lead to
the
> screw? Also, how would one isolate the ASD from the fender to prevent
"noise"
> from the frame? How about running the screws through rubber grommets and
then
> attach to fender? What's the success rate on improvement of ASD function?
> Kurt Piepenburg
> 81 EFI
>
>
>
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