franksaltz28

iTrader: (1)

I have a good miss while on throttle. My car's throwing a lean bank code and a intake air temperature circuit. Could this be a maf sensor, or would it be another issue.

Mods are in the sig.

P.S. It smell's like its running rich. I think its just unburt fuel from the miss.

franksaltz28

iTrader: (1)

The ses light started flashing today, and the miss got worse. Anybody got any input on this?

LS6427

iTrader: (2)

Are you talking about a miss at WOT or just part throttle?

This sounds like an 02 sensor is failing. They cause you to run rich and they also cause misfires. And NO, you will not get an SES light or code until its really really bad or its totally failed.

Spray the **** out of the IAT sensor in the lid with MAF cleaner.....maybe that sensor is failing or failed.

If it is happening at WOT....then it could be the MAF.

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bstuby

iTrader: (36)

^^^^ usually if the maf is dying also it will throw codes all over the place

LS6427

iTrader: (2)

Mine never did when it failed. I get no codes when my IAC valve failed, 02 sensors, MAF, TPS or my coolant temp sensor.

I've learned our PCM's are full of idiot light type actions. They're good for tuning, but these PCM's suck.

Also, these PCM's are not all the same. They work differently in different cars. They are not all created equal. Or at least they do not operate equally.

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LS6427

iTrader: (2)

Oh, my solenoid that evacuates gas fumes from my charcoal canister is failed....no code.

The one that lets fresh air into the canister.

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franksaltz28

iTrader: (1)

Its always missing, part throttle or full throttle.
I think i have simulators for my 02 sensors, since i dont have cats.

LS6427

iTrader: (2)

Its not the MAF then.

You need to get a scan with an OBDII scanner while the engine is running to see how the 02 sensors are switching. You probably have one that is going out. They cause rich running and misfires when they are failing.

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