Q: Truck runs rough in 80 to 90 degree weather

asked by on October 11, 2016

my truck starts fine gos into a high idile they kicks down in to a normal one after that when it gets to temp and the themastat opens the gauge drops to where it runs and then it starts running rough when the weather is 70 to 90 degrees out you step down on it somtimes it gets a little better and somtines it dont hope you have a idea tried of throwing new parts at it

My car has 215000 miles.
My car has an automatic transmission.

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