Why does my car idle high when I start it up then idles low and high. on 2007 Chrysler Aspen

My chrysler aspen 2007 idles high when I start it up now matter when it is then when it idles down it seems like its idling low to normal almost like its going to cut off. I got it diagnosted but they say it might be a wire or sensor they don't really know but I can get an overall inspection for 180.00 dollars. Can anyone help?

by in Maple Valley, WA on November 14, 2012
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3 answers 1 comment
ANSWER by , April 17, 2013
have you found out the problem? mine is doing the same thing. i brought it in a year ago to dodge they replaced spark plugs and cleaned some things supposively for a hefty $1800 well now its back running high rpm's and theres a battery light on.
ANSWER by , December 11, 2014
Its ur tps sensor
ANSWER by , November 14, 2012
POSS IDLE AIR CONTROL VALVE GOING BAD CLEAN THROTTLE BODY 1ST AND SEE IF THAT HELPS
COMMENT by , November 15, 2012
Thanks for your help.I will see if this fixes the problem.