I had these two codes in the past.
P1128 & P1130 and running fine turned into barely running engine
The short version is I had a bad MAF. To get to that conclusion I ended up monitoring the fuel trims. A Durametric or other scan tool that can read fuel trims values will tell you if have a vacuum leak or not. If you can determine if you have a vacuum leak or not then you can focus on either fuel or air as
thstone suggested.
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Originally Posted by Jonconsean
I told I bought it new at Autozone.
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What brand of MAF did you buy? You may have gotten a bad or cheap one?
The general consensus I found online was it should be Bosch. If I remember right the Porsche branded MAF sensors are Bosch with a Porsche stamp. Some on the forums state that Porsche hand picks the betters MAFs from the lot for the Porsche branded ones. I can’t confirm or deny this. The moral of this story is maybe you Autozone MAF may be bad out of the box. It wouldn't be the first time a new sensor failed.
Quote:
Originally Posted by Jonconsean
He is charging me $400 for a new MAF sensor.
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$400 to change a MAF is way too high in my opinion. The sensor is about $200 bucks for a Bosch. It takes longer to get to the engine then it does to change the sensor.