Question about 1995 Pontiac Sunfire

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ROUGH AND POPPING IDLE WITH NO CODES

JUST REPLACED PLUGS/WIRES/COIL PACKS/FUEL FILTER

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  • 176 Answers

Check compression, may be a burn valve

Posted on Apr 21, 2014

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Posted on Jan 02, 2017

  • 73 Answers

SOURCE: 1994 pontiac transport se not firing in first coil pack at idle

ARE YOU CHEKING SPARK OFF THE COIL TOWER OR AT THE SPARK PLUG END OF THE WIRE SOUNDS LIKE YO HAVE A BAD WIRE

Posted on Apr 24, 2009

  • 165 Answers

SOURCE: car starts but idles rough

this might be fuel injections clogged up try getting the injectors cleaned out and hope that works

Posted on Jul 06, 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

  • 6 Answers

SOURCE: I have a 2001 Grand Am 3.4l V-6. I have replaced

check the plug where the air intake connects to the engine. i had a loose connection in mine, it cost me an alternator that i didn't need. the wire also caused rough shifting.

Posted on Sep 22, 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

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Rough idle on 97 Pontiac sunfire with no check engine light or error codes...Both coil packs, ignition control module, spark plugs, and spark plug wires have been replaced


could be fuel , try a fuel addative , get one that covers the catalytic convertor as well as the valves , injectors etc,look for any signs of wear/damage to vacuum and air hoses

Jun 29, 2014 | Cars & Trucks

1 Answer

ROUGH IDLE WITH NO CODES


mostly like clogged or failing injectors, try chevron techron fuel injector cleaner run it for couple days n see it improves if not ull need a noid tester on the injectors

Apr 21, 2014 | 1995 Pontiac Sunfire

1 Answer

My 2010 Sebring has a rough idle and run before and after changing spark plugs. What else could it be?


Could be too many things for a rough running engine. This could be the o2 sensor, air or fuel filter, injectors or even the coil packs. If there is a CEL blinking on the db, you should diagnose the codes to locate an exact issue.

Apr 22, 2013 | Cars & Trucks

2 Answers

Car is idling rough all coil packs have been changed along with spark plugs


Dont get another harness. If you are using Autozone supplied coil packs, the problem is most likely the coils from Autozone. I have went through this exact same thing before. I changed the coild because one had a burn mark on the boot between the plug and the coil pack. I noticed it when changing spark plugs. The new coil from Autozone made the vehicle struggle on take offs and idle rough and the vehicle had no power. I installed another coil from Autozone again which was supposedly a better model and costed more. The vehicle ran a little smoother but the rough idle and small misfire was still there. I installed another coil from the dealership and the problem was fixed immediately.
I also replaced one of the coil connectors for a different cylinder but only because i broke it when disconnecting the coil packs to remove the spark plugs.
And when I installed all my coils and the new one from Autozone, I used dielectric grease on all the connectors. But the rough idle and power loss was immediate following installing the new coil from Autozone.
Beware if you are using coils from another part store because many part stores get their parts from the same source.

Jul 18, 2012 | 1996 Volvo 960

1 Answer

Recently I had my 2000 gmc 2500 6.0 liter truck start running rough. I changed the spark plugs, checked the coil packs and replaced the fuel pumpand fuel filter. Still no change....Any suggestions?


ROUGH IDLING CAN BE CAUSE BY MANY THINGS.I AM LOOKING AT LEAKING VACUUM HOSES OR INTAKE MANIFOLD GASKET LEAK.DIRTY FUEL INJECTORS AND WORN ENGINE VALVES WILL CAUSE ROUGH IDLING.ALSO LOW IDLE SPEED CAUSE ENGINE TO RUN ROUGH.

Apr 18, 2010 | 2000 GMC New Sierra 1500

2 Answers

Car idling extremely rough, battery not charging


possibly plugs, plug wires, coil packs, ignition module, fuel filter... the list goes on from that description

Oct 06, 2009 | 1997 Mercury Mountaineer

1 Answer

2002 kia sedona 3.5l has rough idle replaced plugs wires and coil


this vehicle has coil packs for the ignition correct? have you ran the engine at night with all surrounding lights outs so its really dark. spray a mist of water on the coil packs and spark plug wires to see if you have spark/voltage leaks jumping out from them. sometimes the tiny sparks will be so fine and skinny you can barely see them so it needs to be dark. hope this helps your trouble shooting. a coil pack could have such a fine crack for the voltage to leak from that you cant see it.

Jun 13, 2009 | 2002 Kia Sedona

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