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Had a quick question :)

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Old 06-05-2012, 05:18 AM
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Default Had a quick question :)
I have a 98 f150 that when stopped lets say at a red light or just idling the RPMS rev up and then drop and then rev up and then drop...what is wrong!?!? Please help and if I let off the break a little bit I nudge forward more than I would
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Old 06-05-2012, 07:30 AM
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Moved to correct section
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Old 06-05-2012, 08:14 AM
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Is it a 4.2 V6?
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Old 06-05-2012, 08:33 AM
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Dirty Throttle body and or Throttle possitioning sensor/Idle control
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Old 06-05-2012, 09:37 AM
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Could be the intake, vacume line. You can have a smoke test done to check for the leak. Sounds like she is sucking air.
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Old 06-05-2012, 05:23 PM
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4.6 v8
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Old 06-05-2012, 06:35 PM
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What position is ur fan switch on? If ur low on freon an have even the heater or ac on feet an face it'll dot that unroll u refill the freon and disconnect ur battery for a few min.
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Old 06-06-2012, 06:01 AM
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Originally Posted by Travyforyou
What position is ur fan switch on? If ur low on freon an have even the heater or ac on feet an face it'll dot that unroll u refill the freon and disconnect ur battery for a few min.
Huh ????
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Old 06-06-2012, 06:04 AM
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Originally Posted by techrep

Huh ????
Lmao I'm confused as hell on that one.. Who gave boomhower from king of the hill an f150forum account?
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Old 06-06-2012, 06:08 AM
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Lmao
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