My car shift ok when cold, as soon as it warms up it shifts hard and slips. I have taken it to 3 different shops and getting 3 different opinions. 1.) replace transmission $5,000. 2.) solenoids needs replacing 3.) Engine fan staying on longer than normal. Possibly not cooling down the transmission causing it after warm up to shift hard or slip. Replace radiator, $550.00. . . anyone else have shift problems after the car gets warm?