So the truck I plan on buying . 97 ram. 2wd half ton. My buddy who owns it said every once in awhile when its real cold freezing or below and the truck is cold when taking off to go up a hill it'll Rev a little before it grabs . It'll only do of once. If you take off in first on the shift lever and manually shift it wont do it. It only does it once in awhile. He said about 3 times in the last 6 months. The fluid is clean and the filter is only 10-15,000 old. Any one have any idea please help.