cold start rough idle - 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 09-27-2010
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cold start rough idle

on cold starts my 93 3.0 4x4 has a rough idle after a few seconds of starting and lasts 5 to 15 seconds and cant figure out why i have done plugs wires coil cap and rotor new air filter and cleaned the MAF and throttle body any suggestions
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Old 09-27-2010
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The back of the throttle plate needs some cleaning! Small amounts of carbon builds up on the face causing it not to seat properly during start up.
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Old 09-27-2010
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could be a bad throttle pos. sensor and if so how do you test it
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Old 10-16-2010
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IAC.... replace and have FUN! been there done that
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