Question about 2001 Pontiac Grand Am SE

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My 2001 Grand am 3.4 engine hesitates above 60mph, this started to happen after crank sensor and crank pulley were replaced. Is there a relearn procedure for the timing of my grandam, the shop I brought my car to doesn't acknowledge there it such a procedure. Grand am hesitation above 60mph is not noticeable in winter months but only hotter weather and if I'm driving above 60mph and feel engine hesitation I let up on gas pedal and then slowly depress pedal to temporary eliminate engine hesitation.

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  • Keith Sharphead Feb 18, 2013

    You might want to buy some Throttle Body Cleaner and clean the butterfly valve. Change the Fuel Pressure Regulator. Clean the MAF sensor with approved cleaner. Replace both o2 sensors. I had the same problem with my 2003 Pontiac Grand Am.

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Change out the Fuel Pressure Regulator Sensor.

Posted on Jan 20, 2013

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I would look at ignition problems
You could have a shop put a scope on the CPS, but your issues are at high speed,under a load, on hot day.

Clean Air Filter ?
Buy some CRC MAF Cleaner and clean it
Fairly good spark plugs? Not over 60,000 miles or three years old?
Remove whatever comes off,so you can see and clean out leaves and hose off dirt from condenser and radiator

Posted on Sep 29, 2010

  • Anonymous Sep 29, 2010

    Disconnect and plug vacuum hoses to EGR and test,before replacing

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You may want to replace the EGR valve..........Hope this helps.

Posted on Sep 29, 2010

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