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Hellom are there any codes in the pcm?
Do you have the code number they gave you?
Ok, that code is not for the mass air flow senso, its for system running lean.. Mass air flow is a possibility but there is more chance of a low fuel pressure or vacuum leak.
Yes. need to start by checking the fuel pressure.
The fuel filter is built inside the fuel pump assembly and is not servicable seperate.
Hi Im David. Have the fuel pressure tested. There is no other option here. It has to be between 44-50 psi