code P0101
My mom has a 2003 rendezous. Her car is dieing after running for a while. She has the pending code P0101 I know it's "Mass Air Flow (MAF) Circuit Range/Performance Problem" She has had the code cleared over and over again and has had the MAP sensor replaced and is still getting the code. I have checked the wiring, for vacuum leaks. Unless I'm missing something I don't know what. I need help.
Thank you Jerry |
Has the MAF sensor been put on backwards? Is the arrow pointing towards the TB?
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Yes the arrow is pointing towards the TB.
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Upon replacing the MAF sensor did you notice if the throttle butterfly was clean?
Sometimes a gummed up butterfly will contribute to stalling. |
No I didn't see if the butterfly was clean. I will check them when she gets home from work. Today mom called and said the the car died today on her way to work and when she went to start it the car would rev up and down. Now is going on?
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My mom said that she has noticed that her car starts doing this when it gets around 1/8th of a tank on the fuel gauge. Could the fuel pump be the problem?
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Possibly. Maybe the fuel gauge is off, and its showing more than is actually in it. When the car is off, and the key is turned to "on" does the fuel pump prime like it should, or does it sound like its cutting in and out? Try this with 1/8th of a tank, and with more.
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Ok I will check this out. She just called me a said that the car will not even start now.
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The pump does come on. I also put 3 gal of gas in it too. Got it started and to her house. But everytime you let off the gas like to turn or stop it will die.
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It could be the fuel pressure regulator not working properly
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How would I check the regulator?
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With the key "on" or the engine running, pull the vacuum line off, and if there's and gas leaking (or smell of gas {i think}), it needs to be replaced.
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ok Ill check that.
Thanks |
Ok checked it with the car running and no smell or gas leaking from it.
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Okay, thats good. You can try to replace the fuel filter next. Its only a few dollars, and not overly hard to change.
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It was the first thing that was done.
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Okay, well I am out of ideas. :(
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I am too that's why I came here. Thanks for the help.
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Have you checked the breather tube? Its a vacuum line that runs from the intake to the back of the motor.. mine was off at the motor, and it caused a bad idle.. could be worth a check.
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Yes I have checked it too.
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You said you replaced the MAP sensor, did you replace the MAF sensor too?
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