Help! P0101, P0171, P0174
#11
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Ok so i went and tested the fuel pressure on the return side. At idle the feed is 42-44 psi and return side is 6 psi. This tells me the pump is weak like u guys said. Im gonna replace it and hope it helps.
#12
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Dirty 30: Did you R&R the fuel pump? If so, did that fix the problem? I have the exact same problem I've been chasing for a couple of weeks now, and don't want to just throw parts at it.
Thanks.
Thanks.
#15
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why would low fuel pressure be cuasing knock sensor codes to show up? j/w i also have been battling knock sensor codes, but i have yet to ohm out the sensors or check/add a block ground... guess i need to also check fuel pressure while im at it...
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