heater\ac switch makes truck rev - Ranger-Forums - The Ultimate Ford Ranger Resource


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Old 09-11-2010
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Icon4 heater\ac switch makes truck rev

so last night i was off playing in the mud and when i hit my heater swtich my truck revd up but only when it is on floor and body vents is this a known issue or something new i am sorry if this is posted in the forms some where else thanks for reading
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Old 09-11-2010
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What do you mean revs up? On our old truck (Mazda, practically same as the Ford Ranger) the engine would rev up 200rpms or so for a couple seconds and would go back down when we flicked those switches.
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Old 09-11-2010
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i revs up and stays up there it is kinda like a high idle and dosent die down
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Old 09-11-2010
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Just taking a guess, it doesn't seem that irregular assuming your fan runs off your engine.
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Old 09-11-2010
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it has a mec fan on the motor and it only happens on the position for the body and feet
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Old 09-11-2010
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could it be a vac line bc my truck only blos heat on cold or out side air at all
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