07 Grand Cherokee Laredo overheat problems
Ok so I've got an 07 Grand Cherokee Laredo 3.7 V6 that's having some overheating issues. At first I thought it was the thermostat, which was a problem because I replaced it and the old one was sealed shut, not allowing coolant to get into the engine. So I thought all was well and topped off my fluid levels and assumed it fixed. The next day the transmission went into protect mode and would not shift out of 3rd gear. It then built up enough pressure to shoot the plastic cap off of the transmission tube and was spewing ATF back out of the tube because it was too hot. When it is cool in the morning it works fine, but in the afternoon when it gets hot this issue happens again. I watched the coolant cycle to the engine and back to the reservoir through the radiator cap just fine so I know my coolant lines aren't plugged. The radiator fan is kicking on when the engine heats up and when the compressor is running. However, I'm at a loss as it why the transmission is overheating and locking me out after 3rd gear. Anyone experience any of these issues or have any ideas? It's not coding so I can't run any checks that way. Thank you.