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Old 10-27-2011, 12:20 PM
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Re: 91 lumina has bad hesitation after warm up

Quote:
Originally Posted by allisonmo2 View Post
so changed plugs, wires, pcv valve after i finally found it, and fuel filter. drove about 15 total miles and it is still doing it. now i'm getting frustrated. i guess tomorrow if i have time i will pull the tb boot and see if it is dirty in there. i have also seen a post where someone reccomended using an extension to tap on the injectors. presumeably to dislodge a partial blockage. any thoughts on that? should i be looking at an egr or maf now? btw when i pulled the fuel filter the gas that poured out was almost black. i am hoping it was just sediment in the filter. the hard part is i leave for work at 545 in th morning and don't get home till about 715 at night so time is hard to come by. always dark when i am home until the weekend.
when maf is bad it will usually will die when you start it and die at anytime you can try to clean the screen in the maf and egr you can clean to i have my doubts on cat but again thats the next thing to check out would be the cat but really see if that butterfly is dirty and try to add some sea foam to clean injectors since you say gas was black.

good luck...........
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