My son has a 1998 Chevy corvette he bought as a project car. The cars automatic transmission keeps gradually heating up as he drives it. It does not seem to cool down. The temperature keeps climbing never fluctuating downward. Yesterday we were at 240 degrees with just normal around town driving. Shouldn’t it go down when idling? We installed a new radiator, and a separate transmission oil cooler but it doesn’t seem to help. We did a partial drain and fill of the transmission fluid. The car has no problem codes when we scan it using our BlueDriver scan tool. What other causes could we look at? When we bought it from the previous owner he had maintenance records that show he installed a reconditioned torque converter and stock exchange valve body complete with solenoids about 4 years/10000 miles ago. Any help would be appreciated.
also the transmission seems fine, No slipping or other problems. Just the temperature
The car has no problem codes when we scan it using our BlueDriver scan tool.
Can your BlueDriver read manufacturer-specific transmission codes? A professional-grade scan tool is usually needed for that.
@chucktobias it’s a nice little tool that works with your iPhone but alas I concur that it probably is not as detailed as a professional scanner would be.
@mman22 I'm not familiar with the BlueDriver but the inexpensive consumer-grade scan tools I have seen are not able to read those codes, only generic codes.
It seems to me you have something going on internally in that transmission since you've ruled out the transmission cooler. Either there is excess internal friction or something is restricting the flow of fluid into the cooler. You may be able to find a clue with a dealer-level scan tool, on that car a Tech2 or equivalent.