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Car Forum / Ford / Ford Explorer / July 20072000 Explorer XLT 4.0 L Irregular idle
Upon start up my 2000 Explorer revs up and down until it stalls. This only happens when the engine is cold and the outside air temp is below 60 degrees. In warm weather it runs fine. I've replaced the mass airflow sensor and had a mech check for vacuum leaks, but still no luck. Any ideas? Thanks. Upper and lower intake manifold gaskets usually cause this. Also the IAC has been known to cause this symptom. Go to explorerforum.com and search for this symptom. Roy >Upon start up my 2000 Explorer revs up and down until it stalls. This >only happens when the engine is cold and the outside air temp is below >60 degrees. In warm weather it runs fine. I've replaced the mass >airflow sensor and had a mech check for vacuum leaks, but still no >luck. Any >ideas? Thanks. |
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