ok here is an update
after bleeding it on monday had the old lady drive it yesterday to do errand locally she said heat was blasting,temp stay in the middle. when i got home from work she just had gotten home 5 minute before me i lifted the hood saw coolant around expansion tank frame and around abs housing and air box housing. then i could hear air coming thru radiator cap even though it was real tight.so it seems that the radiator cap has gone bad and under pressure coolant is seeping out just order a new one and to be safe a new temp switch too.

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4/02 x5 3.0i AUTO BLACK
KISSIMMEE FL