2001 Nissan Xterra Idle problems

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Shakes or Wobbles problem
2001 Nissan Xterra 6 cyl Four Wheel Drive Automatic 102000 miles

Xterra had a rough idle ~99K miles; had the 95K, 100K, & 105K maintenance all done. Rough idle gone but vehicle would give a shudder when stopped at a light.
Would not have any problems while driving. No check
engine light.
Tried 1) multiple injector fluids 2) higher octane gas 3)sea foam fluid. Sea Foam helped a bit but shudders
continued. Still no check engine light.
Took it in at 101,900 miles. Dealer diagnosed problem as the knock sensor going out. $700+ later I drive the
vehicle away and the second light I'm stopped at - guess
what! - The vehicle gives a shudder.
What could be wrong? Mass air flow sensor? Idle air
controller? Crank shaft position sensor? ?

Do you
have the same problem?
Wednesday, September 1st, 2010 AT 12:07 AM

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