1990 jeep cherokee engine Idle Problem

210 MILES
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IXY2
  • MEMBER
  • 3 POSTS
I have a 1990 Jeep Cherokee Larado, 4 speed automatic, with a I6 4.0 engine.
It starts fine, runs great at speed. But when i come to a stop with the engine on it has a very unstedy idle. it feels like its missing, but the lurches it makes are come pleatly random.
It can do it 20 times in arrow befor retuning to a nomal idle or once. My Question to you is, Do you know whats causing this fault, and is it fixable?
Jan 29, 2012 at 4:57 PM
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JACOBANDNICKOLAS
  • ✓Experienced Mechanic
  • 110,246 POSTS
Check idle air control valve and check for vacuum leaks.
Jan 29, 2012 at 4:59 PM
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RASMATAZ
  • ✓Experienced Mechanic
  • 75,988 POSTS
Clean the idle air control valve and EGR valve and test the TPS closed and WOT voltages
Jan 29, 2012 at 4:59 PM
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