1999 Ford Explorer when I turn the heat on when in park it idles goes to 2 RPMs and drops down to one jumps up to three jobs down to one what could be the problem

Asked by Dianne Oct 16, 2018 at 07:46 PM about the 1999 Ford Explorer 4 Dr XL 4WD SUV

Question type: Maintenance & Repair

2 Answers

When in park with heater on idle jumps up and down between 1 RPM and 3 RPMs

74,290

Have someone remove and thoroughly clean the throttle body. Also check the Idle Air Control valve. They can get gummed up also.

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