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Engine problem

Tiny
MSHMORG
  • MEMBER
  • 1999 NISSAN MAXIMA
  • 6 CYL
  • 2WD
  • AUTOMATIC
  • 75,000 MILES
My 1999 nissan maxima starts missing and sometimes backfires after being drinen about 5 miles.
Monday, November 29th, 2010 AT 9:50 PM

3 Replies

Tiny
KHLOW2008
  • MECHANIC
  • 41,814 POSTS
Were the spark plugs, ignition coil and fuel injectors checked?

Is the Check Engine Lamp indicating?
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Tuesday, November 30th, 2010 AT 3:21 PM
Tiny
MSHMORG
  • MEMBER
  • 2 POSTS
The engine chech light came on instantly and went off after it had missed a few times. Not ater that. I have had 3 or four coil packs replaced previously, but it acted differently--more severe miss firing. It only happens after the car heats up after driving 4-5 miles. Then if I let it sit for a while, it seems ok, hen after a while starts acting up again. The gas has been in the car for about 3 months since I haven't driven it much lately.
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Tuesday, November 30th, 2010 AT 7:49 PM
Tiny
KHLOW2008
  • MECHANIC
  • 41,814 POSTS
You would have to plug the vehicle onto a scope to check the conditions of all component when it is misfiring.

As problem only occurs after warming up, it could be a failing sensor. Try to get a scan done to see if there are any trouble codes stored in PCM>
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Tuesday, November 30th, 2010 AT 8:10 PM

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