When I turn on fan, motor runs rough. - Ranger-Forums - The Ultimate Ford Ranger Resource

2.9L & 3.0L V6 Tech General discussion of 2.9L and 3.0L V6 Ford Ranger engines.

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Old 08-23-2012
jefferzbooboo's Avatar
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Join Date: Nov 2010
Location: sherwood nd
Posts: 12
When I turn on fan, motor runs rough.

My truck runs fine until I turn on the fan, doesn't matter if it's heater or air conditioning, it acts like it's missing. I don't get any codes or have a CEL on. I've recently replaced plugs, wires, alternator, water pump, thermostat, heater core, u joints, fuel pump, and exhaust from exhaust manifolds back all within the past 4 months.
Anyone have any ideas?
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Old 08-23-2012
rangerrunner11's Avatar
Join Date: Feb 2011
Location: .
Posts: 1,018
Im guessing youve checked for amp drop? if not id do so.
I cant imagine any amount of excessive draw would make the truck act that badly but who knows.

again, just a guess.
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