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2001 fresh oil, new cps, runs like a top. I have noticed setting at idle there seems to be a very small miss or shake to the truck....it is not steady it will do it for a second or two the stop then in a second or two do it again. The tach does not move but it feels like the rpm's drop then rise then drop. I have no check engine light on. It does not seem to effect the truck running just something I feel. Thanks for any help.
You might peek under the hood when it does it and see if it is your air conditioner compressor cycling on and off. The pcm cycles it periodically even when ac is off just to keep things working.
Rezvani's Latest Post-Apocalyptic Monster Is a Ford F-150 Raptor Underneath
Slideshow: Called the Fortress, the 850-horsepower pickup combines Raptor underpinnings with military-inspired features, survival equipment, and a starting price of $285,000.
