2002 FORD EXPLORER
260 MILES
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My 2002 ford explorer sport trac jumps up and down on the RPMS when ideling, when i stop at a red light it will idle about 600 rpms then jump down to 100rpms, sometimes it will jump 600rpms and just die/stall...any idea what it may be? this is my first car
Apr 7, 2013 at 6:18 PM
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ASEMASTER6371
  • CAR REPAIR CONTRIBUTOR
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check for vacuum leaks. the pcv hose is common. check the idle air control as it may be failing

Roy
Apr 7, 2013 at 6:24 PM
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FREEMBA
  • CAR REPAIR CONTRIBUTOR
  • 1,152 POSTS
try cleaning the IAC (Idle Air Control ) Valve. [a picture of the IAC is attached] didn't know which engine you had.

Use carb cleaner to clean the IAC and its intake manifold ports.
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Apr 7, 2013 at 6:42 PM