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Thread: Coil Problems
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10-10-2011, 09:41 AM #1
- Join Date
- Jan 2010
- Location
- Charlotte NC
- Posts
- 62
NBM- 1998 Z28
Coil Problems
I am wondering if it is possible for the coils on my 98 Z28 to miss at idle but function properly under load? The car runs fine but when I'm sitting in Park or stopped at a light it sounds and feels like I'm getting an intermittent miss.
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10-10-2011, 03:15 PM #2
- Join Date
- Apr 2008
- Location
- Madison, WI
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- 7,006
1999 Formula WS6 M6-sold- 2001 Silverado Z71
Small possiblity buy not likely. Do you have a SES light that might point at which cylinder is misfiring?
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10-11-2011, 02:47 PM #3
- Join Date
- Jan 2010
- Location
- Charlotte NC
- Posts
- 62
NBM- 1998 Z28
No SES light just a slight miss at idle.
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10-12-2011, 11:56 AM #4
- Join Date
- Feb 2009
- Location
- Florida Man Status Acheivement
- Posts
- 11,760
Navy Blue Metallic- 98 T/A w/ mods, 00 FBVert
most likely culprit is your MAF needs cleaning.
Are you running a K&N filter?
2nd most likely culprit is a vacuum leak. Check your PCV tubing around the PCV & also around the back side behind the intake where it splits into a Y. Those are the two common spots for vacuum leaks to develop.
recheck you plug wires. one click plug, 2 clicks the coil.
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10-12-2011, 11:57 AM #5
- Join Date
- Jan 2009
- Location
- North Jersey
- Posts
- 11,496
Phantom Black Metallic- 2004 GTO M6
Clean your MAF sensor and put some fuel system cleaner in the tank and see if the miss goes away. Also, check your intake bellows at the throttlebody to see if there are any holes in it.
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10-12-2011, 03:26 PM #6
- Join Date
- Jan 2010
- Location
- Charlotte NC
- Posts
- 62
NBM- 1998 Z28
I will check the bellows in the morning. thanx.
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10-13-2011, 01:10 PM #7
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10-13-2011, 03:23 PM #8
- Join Date
- Jan 2010
- Location
- Charlotte NC
- Posts
- 62
NBM- 1998 Z28
2 clicks at the plug....Hmmmm..interesting, i will check thanx.
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