Q: Throttle Body is going out

asked by on December 29, 2016

When I start my car, sometimes it starts with no problem. Other times it starts with a message on my dash that says Engine Service Required. When this happens my engine revs by itself in park continuously. If i try to drive when it is doing this, my car does not exceed about 30 mph. I also have issues in the winter with even just shifting my car out of park. The gear shift will not shift out of park until I warm my car up and the thermostat is close to the middle line. I have heard on swedespeed's forum that this could be a problem with the solenoid being gunked up but I would really like to know how much it would cost to clean that or would I have to replace it completely.

My car has 150000 miles.
My car has an automatic transmission.

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