Won't boost over 5psi
07-01-2010, 05:48 PM
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Won't boost over 5psi
17535 - Fuel Trim; Bank 1 (Mult): System too Rich
P1127 - 35-10 - - - Intermittent
17537 - Fuel Trim; Bank 2 (Mult): System too Rich
P1129 - 35-10 - - - Intermittent
I searched and found same symptons but no resolution for my issue. I replaced my MAF sensor and ect is only about a year old. I'm leaning towards bad FPR. Car runs smooth at idle and above, just no power. Any ideas?
Thanks
P1127 - 35-10 - - - Intermittent
17537 - Fuel Trim; Bank 2 (Mult): System too Rich
P1129 - 35-10 - - - Intermittent
I searched and found same symptons but no resolution for my issue. I replaced my MAF sensor and ect is only about a year old. I'm leaning towards bad FPR. Car runs smooth at idle and above, just no power. Any ideas?
Thanks
07-05-2010, 02:22 PM
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EGTs are seriously expensive. They make O2 sensors look cheap.
If you are getting rich in both banks, I'd check the fuel system first starting with the fuel pressure regulator. You can get a mechanical fuel gage for way less than an O2 sensor even and be sure your fuel pressure is correct. If your fuel pressure regulator has failed causing this overly rich condition, changing EGTs won't do anything but empty your wallet.
It might be the EGTs, but it could just as easily be the FPR.
If you are getting rich in both banks, I'd check the fuel system first starting with the fuel pressure regulator. You can get a mechanical fuel gage for way less than an O2 sensor even and be sure your fuel pressure is correct. If your fuel pressure regulator has failed causing this overly rich condition, changing EGTs won't do anything but empty your wallet.
It might be the EGTs, but it could just as easily be the FPR.
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07-05-2010, 04:36 PM
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The car seems to be running fine in stock mode. Have APR Chip, 4 programs. Stock, 91, 93, and 100 octane. I used to always leave in 93. Do you think this sympton points to the FPR?
In my first post I was leaning towards FPR but no one chimed in. New OEM FPR seem pretty reasonable. ECS Tuning has a fuel pressure gauge kit for $30 and OEM FPR for $50. I know the EGTs are like $250 a piece. The car has 115K and most of the sensors are original. Thanks for the advice, I'll let everyone know the out come.
In my first post I was leaning towards FPR but no one chimed in. New OEM FPR seem pretty reasonable. ECS Tuning has a fuel pressure gauge kit for $30 and OEM FPR for $50. I know the EGTs are like $250 a piece. The car has 115K and most of the sensors are original. Thanks for the advice, I'll let everyone know the out come.
07-05-2010, 07:07 PM
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You may want to have the chip checked. It might be set up for different injectors or a different rate FPR, etc. This may be causing the rich condition if it runs fine in stock mode.