3.8 buick lesabre . mass air sensor car quits when plugged in runs well when unplugged?

Sounds to me like the MAF sensor needs replaced.

I truthfully hate to recommend a motor vehicle circulate to the broking, yet subsequently that's what i circulate to recommend. Take it in, supply them the history and what has been replaced already. each particularly situations the production facility knowledgeable human beings can locate issues others can no longer. confident, an air circulate sensor being undesirable might desire to reason stalling. So might desire to low gasoline tension, so might desire to a plugged up gasoline filer, so might desire to a undesirable throttle place sensor, etc. etc. Take it in. it might fee somewhat greater on the broking, yet whilst it gets fixed top it's going to be worth it.

sounds like you need a new mass air flow or if it,s a older buick then you can disconnect the battery for about 5 minutes then hook it back up !

I would suggest you disconnect the positive side on you bat for 5mins.with the new MAS on it, and try again

you need a new mass air flow,,,,,,,,,,,,,,,,,,,,,,,,,,,