5ktq electrical issues update...

[Bernard Littau]

>
> Maybe the knock sensor is triggering and retarding the ignition too much.
> If the ECU thinks the engine is knocking and nothing changes that, the ECU
> will retard the timing all the way, which is not good to run w/ for long
> periods. This can damage exhaust components b/c the ignition is occuring
> so late in the cycle. I'm not sure but maybe someone has figured out how
> to tell when the MAC ECU's are sensing knock, or maybe that was a
> different ECU. Just a thought...
>

This kind of knocking would throw a code and flash the check engine light on
a MAC-11 car.

Best,

Bernard Littau
Woodinville, WA
'88 5ktq