Running Rich, Lean and more Lean!!!????

[HAND HERPES]

Car is a 1997 Firebird 3.8L v6

Check engine light came on this morning when pulling out onto the road...

P0171 = Bank 1 Lean
P0172 = Bank 2 Lean
P0174 = Bank 1 Rich

How can it run lean and rich?

Already ran fuel cleaner through it, changed fuel filter and recent change of plugs, wires and coils.

What do I check next?

[Fastbird]

How was the car running? When both banks throw a code like that, I usually start by swapping in a known good MAF. One side wouldn't affect the other in the identical manner, but the MAF certainly would, seen it before.

[HAND HERPES]

Car ran fine, didn't notice any difference.

[HAND HERPES]

Also like to add that I had P0174 or 0171 (I forget which one) for awhile, I cleared it 3 times and it's made it's 4th appearance today. The other two codes are NEW.

[Greg08]

Nvm, you already tryed reseting ecu i see.

[Greg08]

try swapping the maf. thats easiest thing first. There is a good chance it can help

[HAND HERPES]

I don't care no more, I'm selling it. BUYING A TRANS AM BABY!

[popo8]

I don't care no more, I'm selling it. BUYING A TRANS AM BABY!

LOL..... It may help you selling it to correct the SES light...

That way people are less likely to try to talk you down based on it.

Just my 2c

[HAND HERPES]

LOL..... It may help you selling it to correct the SES light...

That way people are less likely to try to talk you down based on it.

Just my 2c

Yup, I will just clear it, the codes only comes back like every 2 months.

[popo8]

Yup, I will just clear it, the codes only comes back like every 2 months.

;)