Question about 1998 Pontiac Grand Am

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Does a cracked coil housing make the car miss and rough idle

Car will start but idles rough dies after awhile but runs at 2000 rpm

Posted by Anonymous on

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6 Suggested Answers

6ya6ya
  • 2 Answers

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Posted on Jan 02, 2017

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  • 1 Answer

SOURCE: 2000 Grand Am rough idle

check vacuum hoses

Posted on Nov 01, 2008

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Papa Chan
  • 56 Answers

SOURCE: engine missing, particularly in idle, or dies when turning

The intake gaskets leaking would cause the engine to have a misfire. Get a can of Brake Clean and spray in around the intake manifold on the top of the engine while the engine is running. The engine idle will go up or down if there is a leak. Also try swapping the spark plug with another spark plug to see if the misfire moves to another cylinder. If it moves then you have a bad spark plug. I hope this helps.

Posted on Jan 04, 2009

  • 1 Answer

SOURCE: my engine idles very high, i can rev the throttle

throttle position sensor (TPS) possibly

Posted on May 04, 2009

motorhead427
  • 24 Answers

SOURCE: 1992 pontiac grand am still dies, idles badly and backfires

They spark on a quad 4, 4 cylinder engine is distributed through a coil housing taht is mounted to the bottom side of your ylinder head cover. This housing has thin lead that run trough it to distribute the spark to the boots which fit down over the sparkplugs. Close examination of this coil housing will reveal tiny crack in the plastic along with carbon tracking, and these combined can cause misfire and/or no start condition. I do not recommend replacing the coil pack without replacing this coil housing. ( times out of 10 it is the fault of the coil housing anyway.

Posted on Jun 02, 2009

  • 1168 Answers

SOURCE: 2007 G5 Rough running (missing). Doesn't die.

Hi shoemaker.
Fuel filter issues show up in high demand fuel needs such as passing or going up hills. Rarely do they cause rough idle problems.
Is the check engine light on or flashing? A flashing light indicates engine misfire and should be repaired as soon as possible.
So you could have a vacuum leak, a stuck EGR valve, bad ignition coil, worn spark plug, and many other items.
If you don't have a check engine light and haven't done a tune up do one to eliminate a few items and see if that smooths it out.
If you have further questions ask me and I will check and answer you.

KL

Posted on Jan 04, 2010

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Running rough


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