07 dakota 4.7 when coasting truck up and down shifts when coasting. I thing the TPS is bad, will that cause the shifting. The truck will surge at idle

 

Moved to the correct section.

I can't tell if you are asking a question or making a statement. Please add some punctuation to your posts. And check your spelling.

 

Surging at idle could be a couple of things, one being the IAC valve sticking or dirty. Possible dirty throttle body. How old and what type of spark plugs are you running? TPS, maybe, but are you willing to just throw parts at it? Could you give us a little more detail.