1994 mazda b3000 engine races when ac or heater fan or headlights are on

1994 MAZDA B3000
86,000 MILES
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DARRYL LEWIS
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  • 1 POST
WHEN I TURN ON THE HEATER FAN OR AC FAN TO HIGH OR TURN HEADLIGHTS ON THE ENGINE RACES. ALSO WHEN GOING DOWNHILL IN NEUTRAL THE ENGINE RACES
Oct 31, 2011 at 9:55 PM
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FIXITMR
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  • 9,990 POSTS
idle is controlled by IAC valve. could be faulty.
Nov 2, 2011 at 2:37 AM