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Message: [QUOTE="duddy, post: 911268, member: 4714"] Starting to get a little pissed off at my truck. I left on a trip for work dec 26, parked my truck at the airport. Came hone Jan 18, since then I have gotten what seems to be an air pocket in my cooling system. I have tried a few things with no luck. The Issue, as the engine warms up, I have cab heat, until around 150 degrees. Then the issue starts it goes up another 10 degrees while the hvac does not push any warm air, just cold. and does this off and on until it hits 205 degrees and then settles out to 190 to 195. I knew the coolant needed to be changed, so i flushed the system, and refilled with cat elc, changed the coolant and put a vacuum on it for a few minutes after it was full to try and pull the air out. There was no work done to the truck, that could remotely affect the cooling system, that was done prior to the issue. I picked up t-stats today to throw in since I am sure they are starting to get weak. Not really in the know on how the system purges, so any insight would be helpful. [/QUOTE]

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