Question about 1996 Pontiac Grand Am

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Pontiac grand am 3.1 warm restart rough idle with p0300 engine code

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Posted on Jan 02, 2017

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SOURCE: 2005 Pontiac Grand Prix Rough Idle on startup, Engine dies when intially taking off

EGR valve?

Posted on Aug 23, 2008

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SOURCE: P0300 CODE ON 2001 PONTIAC GRAND AM

Well, the code simply means that the engine has... a random misfire. As to why, that's going to take some work. Is it fuel, timing, compression, or electrical? I'd start with a compression test. Then throw a timing light on it, check for play on the valve train, run some fuel cleaner through the tank, and check your electrical connections. Hopefully, something will pop up. Good luck!

Posted on Nov 23, 2008

  • 71 Answers

SOURCE: Pontiac 200 Grand Am 3.4L V6 3000+ RPM

have you checked the engine for vacume leaks or advanced timing or even sticking accelorator cable or linkage? these are always a good place to start for excess acceleration

Posted on Apr 30, 2009

  • 4 Answers

SOURCE: 1992 pontiac grand am no acceleration, a rough idle (engine miss)

Does it have the 2.3l Quad 4 engine? If so replace the plastic piece that the coils go into, they go bad and leak spark to the cam towers and then you get a nice one or multiple cylinder misfire.

Posted on Apr 30, 2010

  • 217 Answers

SOURCE: my 2005 pontiac grand prix has a bad misfire and

you have a cracked vaccum hose going to your fuel regulator and purge valve.

Posted on Jan 01, 2011

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1 Answer

I have a 97 deville concours with northstar that keeps giving me a P0300 code and SES light?


wrong
cars seldom idle rough when warming up if the injectors and electronics are in good condition
P0300 refers to random misfires which is the rough idle when warming up
the history in the fault codes is the fault report generated but not maintained as the fault rectifies itself
the ses is probably telling you to service the system--clean the injectors , fuel filter or check fuel pressure

Jan 05, 2017 | Cars & Trucks

1 Answer

Idling rough


misfire spark plugs coils wires did you wash engine water gets in under the intake to the plugs first if with a scanner check codes p0300 change plugs p0301 or 2 or 3 or 4 its one of the cylinders i would try just changing all the plugs first and start from there

Apr 18, 2014 | 2000 Kia Sportage

1 Answer

Idles rough and dies


check vaccuum pipes may be at fault and need replacing.

Mar 21, 2014 | 2001 Pontiac Grand Am SE

1 Answer

Pontiac Codes P0300 and P0133 when cold won't start unless you punch the gas


White smoke in the exhaust is a sign of water in the engine. What is the level of the radiator? You may need a new head gasket or heads.

Dec 12, 2013 | 1999 Pontiac Grand Am GT

1 Answer

Car engine idles really high then really low, why?


It can be issue with IAC( idle air control valve) causing the problem.


There are many other possibilities causing these idle issues. Engine idles rough.

There are few help links with solutions to troubleshoot such idle issues.

I suggest you refer the link below and follow its troubleshooting details:------

Click the link below:-----

Ford Expedition IAC valve replacing

http://technoanswers.blogspot.com/2012/12/ford-expedition-iac-valve-replacing.html

Bad miss at idle?

http://technoanswers.blogspot.com/2012/01/bad-miss-at-idle.html

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Stumbling and stalling at idle after engine rebuild?

http://schematicsdiagram.blogspot.in/2012/03/stumbling-and-stalling-at-idle-after.html

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1999 Ford F-150 Idles rough and quits when gas pedal is pressed less?

http://technoanswers.blogspot.in/2012/01/1999-ford-f-150-idles-rough-and-quits.html

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Engine stumbles coming off idle when warm?

http://repairhelpcenter.blogspot.com/2012/01/engine-stumbles-coming-off-idle-when.html

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Erratic idle on car?

http://schematicsdiagram.blogspot.com/2011/12/erratic-idle-on-car.html

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Cold start problem and vehicle shudder around 2500 to 3500 rpms

http://repairhelpcenter.blogspot.com/2012/10/cold-start-problem-and-vehicle-shudder.html

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Low idle when cold out side?

http://repairhelpcenter.blogspot.com/2011/12/low-idle-when-cold-out-side.html

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GMC Sonoma Stalls and idles low

http://technoanswers.blogspot.com/2012/10/gmc-sonoma-stalls-and-idles-low.html

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GMC Idle Air Control (IAC) Valve Replacing?

http://schematicsdiagram.blogspot.com/2011/12/gmc-idle-air-control-iac-valve.html

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1996 Camry intermittent engine failure while idle?

http://repairhelpcenter.blogspot.com/2011/10/1996-camry-intermittent-engine-failure.html

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Engine quits at idle?

http://repairhelpcenter.blogspot.com/2011/10/engine-quits-at-idle.html

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Car overheats and Air blows hot at idle?

http://howtobyme.blogspot.com/2011/11/car-overheats-and-air-blows-hot-at-idle.html

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High Idle Problem

http://repairhelpcenter.blogspot.com/2012/10/high-idle-problem.html

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While stop engine idles like cylinder missing?

http://schematicsdiagram.blogspot.com/2012/01/while-stop-engine-idles-like-cylinder.html

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Idle flair is noticed on car? Rough idle? car will not idle? Erratic idle speed?

http://technoanswers.blogspot.in/2012/02/idle-flair-is-noticed-on-car-rough-idle.html

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High rpm in neutral? Inconsistant high RPM in neutral?

http://technoanswers.blogspot.in/2012/02/high-rpm-in-neutral-inconsistant-high.html

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Vehicle stumbling at idle and shows code 54?

http://schematicsdiagram.blogspot.in/2012/03/vehicle-stumbling-at-idle-and-shows.html

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Rough idle, staling and Erratic shifting?

http://technoanswers.blogspot.in/2012/03/rough-idlestaling-and-erratic-shifting.html

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While stop engine idles like cylinder missing?

http://schematicsdiagram.blogspot.com/2012/01/while-stop-engine-idles-like-cylinder.html

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These details will help.

Thanks.

Feb 15, 2013 | 2003 Pontiac Grand Am

2 Answers

1992 pontiac grand am no acceleration, a rough idle (engine miss)


Does it have the 2.3l Quad 4 engine? If so replace the plastic piece that the coils go into, they go bad and leak spark to the cam towers and then you get a nice one or multiple cylinder misfire.

Apr 22, 2010 | 1992 Pontiac Grand Am

1 Answer

I got a random multiple misfire detected in my 2003 chevy trailblazer!!!!


If you know your tunup is it to date I would go buy some chevron supreme and add the techron fuel system cleaner to the fuel and do this for a couple tanks.

I'm assuming you only have a p0300 so far. You may notice the engine idles a little rough but runs fine off idle. This is a sign of restricted injectors.

Dec 11, 2009 | 2000 Pontiac Grand Am GT

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