Quote Originally Posted by jpopdallas View Post
when you did the intake gasket did you notice if the coolant holes were plugged and was the coolant used dex cool? I've read that air interacts with it and make sludge build up in your system. I have an 06 with only 43,000 and mine started to give wierd temp signes. Looked at my rad cap and damn 1/2 inch of sludge was on the bottom of it. Did a good flush used a super cleaner and fiiled up with non dex-cool and so far all is good.
It is dex cool, but it's in really good shape. The coolant passages are fine. The cooling system works great when the car is moving, but it's sitting in traffic when there is no air flow that is the problem. Even worse than sitting is climbing hills at low speeds...