2002 Ford Ranger Engine RPM

2002 FORD RANGER
86,000 MILES • 6 CYL • 4WD • AUTOMATIC
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DRAGONPUFF
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  • 4 POSTS
After engine is warm, with defroster on, RPM drops about every 3-4 seconds, and sometimes stalls.
Nov 18, 2009 at 2:19 PM
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JACOBANDNICKOLAS
  • CERTIFIED EXPERT
  • 110,175 POSTS
The defroster runs the AC compressor to dehumidify the air coming into the car. So it is normal for you to notice when it cycles on and off. However, it shouldn't shut the engine off. Has the check engine light ever come on?
Dec 2, 2009 at 8:23 AM
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DRAGONPUFF
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  • 4 POSTS
yes,check engine light came on due to a crack in the pcv hose, i replaced the hose about 2 months ago and the light hasn't come back on.Do you think it might be the pcv valve?
Dec 2, 2009 at 2:29 PM
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