Should I buy this 5ktqa?

Bernard Littau bernardl at
Mon Dec 4 18:09:15 EST 2000

> Doesn't the check engine light under boost mean that the ECU has gone to
> full retard but is still getting knock? That's my recollection, though I
> can't say for sure. I bet Orin knows...

This is indeed the most likely case.  Most other reasons will cause the
check engine light to come on at 0.8 bar or a some rpm value such as 1800
rpm -- bad air temp sensor, for instance.

Pulling the codes is so simple on a 5ktq I can't understand why we are
guessing at what the fault might be.


Bernard Littau
Woodinville, WA
'88 5ktq

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