350 TPI Fiero

TK terryk at foothill.net
Sun Sep 24 04:34:55 GMT 2000


There shouldn't be any need to ground the ECM at the case. Tons of them
aren't.

TK
----- Original Message -----
From: Washburn <lpwcruzr at netzero.net>
To: <diy_efi at diy-efi.org>
Sent: Saturday, September 23, 2000 9:02 PM
Subject: Re: 350 TPI Fiero


> 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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