350 TPI Fiero

[Washburn]

How important is this? I have never heard of making sure the ECM
itself is grounded in this way. I installed a 94 model TBI350/4L60E
into my 1986 Land Cruiser. The PCM is mounted under the front seat
just like it was in the donor van. I have it in a painted bracket.
Should I sand it as well to improve the grounding?

Paul Washburn
lpwcruzr at netzero.net

> sure all connections are at minimum resistance. Last week I found
that the
> surface where the ECM is mounted was not bare metal but painted.
While
> there certainly are grounds via wires there is nothing like having a
solid
> DC/RF ground to the car chassis with all the noise from the engine
flying
> around. (ECM is not in engine compartment but just behind it in the
small
> luggage area. So we sanded down to bare metal where the mounting
nuts make
> contact, remounted the ECM, and believe it or not I think the
mileage has
> improved.


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