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3800 Series1 Pulsing


IO_303
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Well as of about a week ago my car suddenly defvloped a pulsing when I am holding speeds, also the Idle is a little rough and low, but when you put it in park it runs fine. My plugs and wries are new. I tested all the coil packs, and they are doing fine. On my todo list is to clean the EGR valve tubing and change tranny fluid beacuse it is a little brown but does not smell burnt. Any other Ideas to look at with this problem??

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I would try cleaning out the IAC motor (and also clean out the bore where it sits in the throttle body.) If the problem persists after that, I would check either the crank sensor or fuel pressure regulator...

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