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NPP Problem

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Old May 29, 2015 | 01:07 PM
  #1  
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Default NPP Problem

A few weeks ago I started her up and heard a pop come out of the passenger side exhaust. For a second the exhaust sounded normal but after the pop it became quiet. Restarted the car a few times and the exhaust was still very quiet. Ran it for a few days and one morning upon startup I heard the pop again and the exhaust got louder. At this point could not tell if it was back to normal or not, but it was louder. Today I hit a bump while driving the car and the exhaust went quiet again. I do have an appointment with the dealer this Tuesday but was just curious if anyone experienced this problem and what was the fix. Just trying to have a bit more ammo when I go to the dealer.

Thanks
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Old May 29, 2015 | 02:17 PM
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Honestly I don't think its a problem. Mine will backfire every once in awhile on start up. The NPP opens and closes at will and its not unusual for the sound to appear or drop off all of a sudden.
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Old May 29, 2015 | 04:02 PM
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Originally Posted by Elegant1
Honestly I don't think its a problem. Mine will backfire every once in awhile on start up. The NPP opens and closes at will and its not unusual for the sound to appear or drop off all of a sudden.


I've had the exact same thing happen (I have my NPP set to OFF but we all know that really isn't off ALL the time)

No big whoop
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