Is it difficult to change the ECM on this car and can it be done by someone
> with modest mechanical skills and tools?
>
> If so, where exactly is the module and what precautions should I take before
> making the replacement?
>
> All help is greatly appreciated....
>
> Regards
>
> Symptoms:
>
> The car hesitates and accelerates horribly when the engine gets good and
> warm; like when driving in city traffic. The condition may persist for
> several minutes and then power may return to normal. This balky power curve
> coincides with a SLIGHT rise in coolant temperature and disappears with a
> proportionate coolant temperature decrease. Right now I believe the
> temperature fluctuation is a symptom of the problem and not the cause. >
> I've had the engine recently rebuilt, and later vac'd at a reputable garage
> where they ran a diagnostic and replaced the O2 sensors. Still this problem
> persists. I've been told by more than one person that they had the same
> trouble and the ECM was the culprit. I'm willing to try a change-out if I
> can do the work myself.
The computer is behind the glove box. But i will bet its not the problem. If your engine was in and out, something probably got disturbed. Change your ECT sensor. Note: this does NOT run the dash gauge.
Don't know you did your rebuild, but the heads are particular about a good finish for a good seal. Did a reputable machine shop check the heads for straightness, cracks and decking finish? DId you pull the plugs and check for a difference in color between the cylinders? The headgasket monster may be back. Sniff you exhaust when its hot and this is happening. Does it smell sweet? Any white vapor? If it does, you have found your problem.
BOB