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I am not getting these codes on my 2002 Coupe and even when I clear them they come right back:
P1149 Air/Fuel Ratio (A/F) Sensor (Sensor 1) Range/Performance Problem
P1149 Air/Fuel Ratio Sensor (Sensor 1) Circuit Lean Range
P1189 Pump Speed Signal Fault
From there the car runs in Valet mode so I have parked it.
I have these questions: Should I be replacing the MAF? Is the left or right fuel pump?
Can this be caused by bad O2 Sensors?
The car runs like a stripped ... ape in the morning when its cold but in the afternoons it has been throwing codes, when the air is warmer.. Let me also say I have the DBW from Jeff as well as his piggy back ECU but this even happens when they are capped off. I have read that a bad O2 sensor will set off a P1149 but Kent and others here will know exactly what this is.
Another clue is that while turning hard in a corner the other day, the car lost power, like it lost fuel pressure... Once the corner was over the car resume perfectly. I am begining to think it's a fuel pump, heat would cause a weak one to lose pressure and as the day went along and temperatures outside went up, a weak fuel pump would cause some problems.
So chime in here and let me know what I should be replacing... Also what fuel pump tester do you recommend? A simple vacuum/pressure tester won't work with the Schrader valve so what are you using..
P1149 Air/Fuel Ratio (A/F) Sensor (Sensor 1) Range/Performance Problem
P1149 Air/Fuel Ratio Sensor (Sensor 1) Circuit Lean Range
P1189 Pump Speed Signal Fault
From there the car runs in Valet mode so I have parked it.
I have these questions: Should I be replacing the MAF? Is the left or right fuel pump?
Can this be caused by bad O2 Sensors?
The car runs like a stripped ... ape in the morning when its cold but in the afternoons it has been throwing codes, when the air is warmer.. Let me also say I have the DBW from Jeff as well as his piggy back ECU but this even happens when they are capped off. I have read that a bad O2 sensor will set off a P1149 but Kent and others here will know exactly what this is.
Another clue is that while turning hard in a corner the other day, the car lost power, like it lost fuel pressure... Once the corner was over the car resume perfectly. I am begining to think it's a fuel pump, heat would cause a weak one to lose pressure and as the day went along and temperatures outside went up, a weak fuel pump would cause some problems.
So chime in here and let me know what I should be replacing... Also what fuel pump tester do you recommend? A simple vacuum/pressure tester won't work with the Schrader valve so what are you using..