Quote:
Originally Posted by stacytnt
I've been experiencing the same high rpm problem with my 2002, 3.5l Intrigue. It's so random and the diagnosic code keeps coming back as the tps (throttle position sensor).Replaced it, and the problem continued. I've also had the engine idle motor(or something like that) replaced and still not fixed. The code still comes up that it's the TPS? I'm going to mention the gasket to him next visit and we'll see. Thanks guys, fingers crossed. I'll let you know if I have any luck.
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Take the air inlet hose off and clean around the throttleplate. While you're at it, take the MAP sensor off and clean it. It's the square shaped sensor with a 3 wire plug going to it that clips to the intake plenum next to where the PCV hoses connect. Those 3.5L engines ingest alot of oil which sometimes gunks up the MAP sensor.
If the problem persists after this, only then would I mess with the gasket. The throttlebody is simple to remove, but can be tricky - particularly the throttle cable clip for the cruise cable. Don't break it since it's only available with a new cruise control cable. I broke it on my wife's old Intrigue and I used a 2-liter pop bottle cap with a drilled and webbed hole in it. It looked funny but it worked.
It is VERY possible that you were sold a bad TPS. It should have a warranty on it so I'd try to exchange it.