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2005 Kia Sedona 3.5L, Running Super Rich?

  • RaptorUnit17
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5 years 2 months ago #41380 by RaptorUnit17
2005 Kia Sedona 3.5L, Running Super Rich? was created by RaptorUnit17
2005 Kia Sedona 3.5L Vin "2" California car

LTFT & STFT Both banks -30%
The voltage test of MAF and G/s showed it was over-reporting so I replaced it. This was before I knew better so yes, I put a cheap Chinese knock off in it. After replacement fuel trims are a little better but only slightly, still in the low to mid 20's.

Is this likely just a bad new MAF, g/s look okay with the replacement. What could cause this on BOTH banks? How unlikely is it to have a stuck open injector on both banks at the same time.

I disabled one injector at a time on each bank to see if one made a more noticeable difference but was inconclusive.

I am wondering what direction to go in?

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5 years 2 months ago #41387 by cj1
Replied by cj1 on topic 2005 Kia Sedona 3.5L, Running Super Rich?
Check the fuel pressure regulator if leaking fuel thru vacuum hose to intake.

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5 years 2 months ago #41402 by RaptorUnit17
Replied by RaptorUnit17 on topic 2005 Kia Sedona 3.5L, Running Super Rich?
CJ1: Thanks, I will check that out.

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