Chevrolet Repair: 1990 chev lumina, chev lumina, scantool

Question
i have a 1990 chev lumina 3.1 and it is doing weird things like no idle ,hard starts, and it seems to be flooding at startup.scantool reveals muliple dtc codes. my gut feeling is that the computer has gone haywire.i say that because all paramiters are not constant and sometimes not even in the normal range. othe times runs and idles fine. am i on track with this diagnosis?  

Answer
What mechanical work has been performed on the vehicle recently ?. As most problems that occur after a recent repair was made can be traced back to the area of where the repair was made.

WHAT codes are you getting and are the components that are realted to the codes within specifications ?.


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