Question about 2005 Pontiac Grand Am

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My grand am 2005 is miss firering changed the fuel and air filter got new plugs and changed the coil pack and still miss firering

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  • 62 Answers

If its still missing do a compression check. You could have a bad cylinder.

Posted on Mar 18, 2011

  • michelles776 Mar 18, 2011

    the compression is good

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Engine missing


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Have a miss firer, pops back in the intake. changed spark plugs the coils cam sensor intake gaskets no fix


backfiring through the intake is usually a sign of a lean condition i would check the fuel pressure.

Apr 27, 2011 | 2005 Ford Escape

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My 95 lumina shakes and misses while accelerating tried plugs,wires,oil chage,air filter,fuel filter,oil filter,1 coil pack,1 rear exhaust push rod and lifter


honestly, sounds like you should go to basics-check compression first, clean the throttle body , check fuel pump pressure at the rail on top of the engine-if you have any kind of check engine light, you need to get the code pulled, you have an OBDI system, so it is not as easy to diagnose-another basic is having good electrical power-battery and alternator in good condition.

Mar 09, 2011 | 1995 Chevrolet Lumina

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While idling, the engine sputters. check engine light on, reading misfire in cylinder four. Have replaced both coils, all wires, and all plugs. Still no help. I've come to a dead end. Anybody with ideas?.


Hi, this may be a dirty injector. Try putting some injector cleaner in the gas tank to see if that will clear it up. If not, you may need to pull up the fuel rail and check the injector flow pattern.

Jan 06, 2011 | 2002 Pontiac Grand Am

1 Answer

Want to change plugs and fuel filter on 2005 cavalier and not sure where eiher are located. I have a palstic cover on top of engine . Would plugs be located under that or does this car have coil packs? It...


Yes the plugs are under this plastic cover which is your coil and pack and ignition module.The filter is located directly behind the fuel tank.Just follow the fuel lines.Make sure and blow all the dirt out first.You might want to use some rust penetrent.Hope this helps.Good luck.

Nov 30, 2010 | 2005 Chevrolet Cavalier

1 Answer

Trying to trouble shoot why my performance is lacking or hesitating on my 1994 Jeep Grand Cherokee Larado? It has had a recent oil change, new plugs, air filter etc. all fluids are normal and I have no...


Change the following:

oil, tranny fluid, and filters: air filter and fuel filter as well. Fill up tank and add 1 can of SeaFoam. Change spark plugs, wires, coil wire if distributor is present - as well as cap and rotor.

If coil packs are present, repalce the plugs and wires, air filter, fuel filter, and have the catalytic converter tested to make sure it's not plugged. This test will also let you know if the O2 sensor(s) are bad or not.

Please let me know if you need any further assistance.

NOTE: start with the cheaper: air and fuel filter. Then work your way up.

carsandcomps,

Guru, Premium Expert @ Fixya.com

May 14, 2010 | 1994 Jeep Grand Cherokee

1 Answer

Miss fire cylinder 1 & 6 on a 4 liter enginge


Did the engine light go on, and you got a miss-fire code? If so, 1st check spark plugs (which u did), then plug wires, if that's not it, the injectors would be next. Let me know how u make out
Curt

Mar 02, 2009 | 2000 Jeep Grand Cherokee

1 Answer

1994 mercury grand marquis v8-281--4.6l


Ok odds are you just need a routine tune up. Plugs, fuel filter, air filter. Now this engine uses coil packs i think, so you wont have normal plug wires. The coil packs are individual and sit directly on the plugs. So it is possible you have a bad coil pack. These engines were known to have this problem in excess. So try the cheap fixes first. plugs, fuel filter...these two is the best two to try first.. The air filter wont cause a bad miss unless it is completely dobbed up. so just for your own good to change the air filter.Now if neither the plugs or fuel filter fixes this car try this. Each coil pack will have an individual plug on top of them. So listen closely to your engine. Unplug each coil pack one at a time, Now evry time you unhook a plug the engine should miss, so unplug one at a time, and if the engine does miss they are working properly. Now if you unhook one of these and there is no change in the idle of your engine, my friend you have found the problem. All you have to do if you find one that does not change the engine idle, you just go buy a coil pack and replace it. This should fix you right up

Sep 04, 2008 | Mercury Marquis Cars & Trucks

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