Question about 2002 Pontiac Grand Am

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Acting like it is out of gas while driving

It was driving fine and then it started acting like it was running out of gas but jerking worse than if it was out of gas, like its not running off all cylanders. but when put in neutral it idles fine. i right away took it to the part store. when i got out smell of gas was very strong. the guys hooked it up to the diagnostics computer and said it didnt run any codes that would cause this problem. plugs and wires are fine, fuel filter and pump good, coil packs good, used fuel injector cleaner and gas treatment as well. please help we are baffled

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  • Pontiac Master
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The petrol smell could from a faulty canister purge valve or EGR valve That would also account for rough running as the tank venting system would be affected.. Fuel pumps are check with a pressure test not a code reader and that also tests the regulator valve in the fuel manifold. I am surprised that no codes showed up as there would be faults recorded from the rough running engine and I wonder if the scanner was connected correctly as every data plug is connected differently.

Posted on Feb 11, 2014

  • desiree reilly
    desiree reilly Feb 13, 2014

    had it hooked up again and the only code that came up was p0300 random misfire I think. we replaced the plugs and it didn't help. then we replaced the fuel filter and cleaned the mass air flow sensor. and air filters. after that it ran a ill better and one of the cel went off. but it still feels like it's missing. I think it may b a fuel injector. took it to the mechanic as soon as I find out I'll let ya know. thanks for your help.

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Posted on Jan 02, 2017

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SOURCE: will run fine, then seems sluggish and shuts off, but will start right back up

mass air flow sensor worked in my case

Posted on May 30, 2009

  • 4088 Answers

SOURCE: We have a 2000 Pontiac Grand Am Se. The car

If this car uses an electrically heated O2 sensor, the heater portion may be bad. If the car has a lot of miles, the O2 sensor may be getting bad also.

Posted on Aug 17, 2009

  • 29 Answers

SOURCE: multiple misfires, rough idle, cuts off at stop.

the fuel injectors are more than likley again your cause the are known for leaking and the smell of fuel usually means one or more was either improperly installed or defective

Posted on Jan 15, 2010

  • 82 Answers

SOURCE: have misfires on firebird hestation and acting

could be fuel pressur regulator or coils

Posted on Apr 12, 2010

  • 31 Answers

SOURCE: rough idle surging. have replaced

the best thing to do is to have a scan preformed on the engine, sounds like a mass air flow, but these parts are to costly to guess at. if the car will run ok at highway speeds of 60 mph or faster your fuel pump is ok.

Posted on Apr 19, 2011

Testimonial: "the car has been at the dealer for the past three weeks. they can't or won't give me the cause of the problem. so I am picking up the car today ."

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