@ Cheekychimp - thanks paul for the thought. I was pretty mystified about this myself, that is why I kept asking the mechanic about it. All he said is clears the system....maybe this is what Fish was referring to?
@ Fish - hmmm i will keep the temp sensor in mind, and or its wiring. but i recently change the temp sensor to a new one, maybe i should get it tested.
Thanks Paul, Fish for another round of inputs, the good news is i am seeing new mechanics this weekend, so lets hope they find the culprit.