I have 1999 Explorer & the engine Idles high @about 1250 to1400 rpm's @ stand still sometimes it will Idle down @ a stop sign or light but always! What can be my Problem?

Asked by GuruTVWF4 Jun 21, 2018 at 12:03 PM about the 1999 Ford Explorer 4 Dr XLT SUV

Question type: Maintenance & Repair

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oilyspill answered 6 years ago

How long since a tune-up? Any applicable trouble codes? Sometimes with hi idle, tranny in park, I block off the mouth of throttle body, for testing, it should kill the engine, if very little or no effect on the idle, you got false air getting in there from somewhere? Also, check and clean anything that has to do with idle air system. If you have maf sensor, with everything off, unplug it. Take the vehicle for a spin, see if it does better? If it does better, check the maf system.

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F_O_R answered 6 years ago

Look for a vacuum leak.

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I have 1999 Explorer & the engine Idles high @about 1250 to1400 rpm's @ stand still sometimes it will Idle down @ a stop sign or light but always! What can be my Problem? 2 Answers

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I have 1999 Explorer & the engine Idles high @about 1250 to1400 rpm's @ stand still sometimes it will Idle down @ a stop sign or light but always! What can be my Problem?

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I have 1999 Explorer & the engine Idles high @about 1250 to1400 rpm's @ stand still sometimes it will Idle down @ a stop sign or light but always! What can be my Problem?

2 Answers

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