Carrera Motronic box: Grounded to chassis?

[KNS]

Looking under the driver's seat of the Carrera, is the ECU box grounded (with the mounting nuts) to the chassis? I was wondering if some small, rubber washers might absorb some vibration.

Thanks...

[Rodsrsr]

Mines not even mounted, its just laying under the seat. I've been meaning to getting around to this and I had the same idea with the rubber mounts. I'm sure it will be fine but maybe others will chime in...

[kidrock]

There is at least one posting to a thread on the boxes. The gent fabricated something for the box to absorb the punishment, and is very happy with it. I believe the box is grounded by a wire in the harness, and does not ground on the floorboard.

[E Sully]

The dme grounds all seem to be on the intake runner in the engine compartment, not the dme housing. Make sure your transmission to chassis ground strap is good.

[KNS]

Thanks guys. I replaced the alternator not long ago and along with it, the battery ground, transmission ground and alternator ground. All new and shiny

[Wil Ferch]

I ran soft rubber washers under the mounting studs of my 85 Carrera's DME... and posted that in this forum... no issues.

Another factoid....the DME relay fails ..IMHO...because it is plugged-in "sideways". The entire weight of the relay is supported in the air by the bottom "pins" of the relay... resulting in a HUGE overhanging moment that stresses the "bottom" of the relay(base) where the pins are plugged-in sideways into the receptacle. Am I describing this accurately enough to form a mental picture? The base of the relay then develops hairline cracks on the soldered pins from moving too much up and down, pivoting on its base. Solution?---> place another rubber piece under the "side" ( the real "bottom") of the relay that is just "hanging" there in air, to support the relay better and to unload the base/pins from stress !