[Diy_efi] Question about 88 Corvette ECM

[Shannen Durphey]

Perry Harrington wrote:
> 
> Hello,
> 
> I was looking through the Mid America Direct catalog when I saw a listing for
> rebuilt ECMs.
> 
> The little blurb accompanying the picture said something to the effect that
> Corvette ECMs go bad a lot.
> 
> I was wondering if anyone here had info or could expound upon this information.
It used to be very common for the '165 to fail.  I remember installing
reman units that had problems.  

> 
> I have an 88 MAF and I'm curious what the common failure modes of these ECMs
> are.
Common failure mode?  Symptoms can vary.  Basically, a guy with some
experience at diagnostics will see a list of symptoms that just don't make
sense.  That's a clue that the ecm may be bad.   Ever hear of the gm tap
test?  Tap the ecm, if the car stumbes the ecm is bad.

Shannen

> 
> Thanks,
> 
> --Perry
> 
> --
> Perry Harrington                        Data Acquisition & Instrumentation, Inc
> perry at dainst dot com                                  http://www.dainst.com/
> 
> Those who would give up essential liberty to purchase a little temporary safety
> deserve neither liberty or safety. Nor, are they likely to end up with either.
>                              -- Benjamin Franklin
> 
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