SGT..eliminate the obvious first, intake air leaks, clean throttle body & IAC valve, all ECM grounds clean and tight, base timing...If scanner indicates way rich condition and no codes stored you probably have a bad ecm. Factory ecm part #1227727 and 12276360 were notorious...if I remember the part #s after close to 20yrs theres a problem!!!!!!!!!!!!
"mean"
and glad to be back!!!!!!!!!!!!!
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