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2006 Jeep Liberty Engine warning light goes on intermittent

Tiny
ABUBLYS
  • MEMBER
  • 2006 JEEP LIBERTY
  • 6 CYL
  • 4WD
  • AUTOMATIC
  • 47,000 MILES
The engine light comes on periodically and the engine "stumbles" and sputters, hesitating for a while. Was in shop twice for the problem. First time they could not replicate it and felt it was a gas problem. The second time the electronics system diagnosis was "multiple misfires". They deemed it necessary to R&R intake valves and keepers, grind exhaust valves and lapped. Also removed squirrel debris from airbox and intake. Very expensive. This was in February. Now exactly the same thing is happening- sputtering, stumbling and engine light.
Any idea what is really going on?
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Tuesday, April 6th, 2010 AT 10:32 AM

1 Reply

Tiny
MIKE H R
  • MECHANIC
  • 3,094 POSTS
The vehicle must have sat fopr a while for squirels to start to make a nest. What it sounds like is a sensor. Have they scanned it lately since they did all the work? Try this, get a can of throttle body cleaner and use as directed. There may be a small piece of carbon messing up the sensor. I had what you described to a subaru. My own sprayed the throttle body cleaner in then let it sit for a few minutes. Then started it and let it run for a while. Then I repeated to spray it again. The light stayed off and the engine ran better with better gas millage.
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Wednesday, April 7th, 2010 AT 6:26 PM

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