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Rad22 09-25-2011 07:14 PM

Please help!! My wk is acting up

Above is a video i took, this only happens when i stop at a light, or i put the truck in park. I dont know what to do. Please someone help. It is an 05 with 50,000 miles

usrdaba 09-25-2011 07:37 PM

Re: Please help!! My wk is acting up
Some things to check are the IAC (idle air controller), TPS (throttle position sensor), or for a small vacuum leak somewhere. I had a 4.7 in my 2000 GC and once found the tube from the PCV valve had come loose. (It's on top and at the vary back of the engine). It did not cause the effect you describe, but shows you that "things" happen. Good luck.

2005JGC 09-26-2011 06:12 PM

Re: Please help!! My wk is acting up
Likely your throttle postion sensor (is everyone getting as tired of seeing this typed as I am of typing it?). VERY common on the 4.7l. To know if it is the very least contributing to the problem start the car, pop the hood, grab the Throttle Position Sensor between 2 fingers at the connector (still connected) and jiggle around. Its obviously not going to move as its mounted firmly you just want to apply pressure in different directions. If your idle speed goes crazy AS you do this then replace the TPS.

Rad22 09-26-2011 09:50 PM

Re: Please help!! My wk is acting up
Thanks for all the recent help. I will try all your advice

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