Is it protocal to change out thermostat when adding freon?

1999 Dodge Intrepid: My mechanic replaced thermostat when all I wanted was freon. Car has been overheating ever since. He says it is protocal to change out the thermostat when freon is added. I never had any problems with overheating before. I have had it back to him twice and another mechanic once since, and they cannot find a problem with cooling system. So now he's checking the heads. By the way, the thermostat and coolant was replaced again since it was changed out. And, if it were a cracked or warped head, wouldn't it stay overheated and not go back down once turned off? It takes some driving around town or stop and go traffic, uphills, etc. before it starts to get hot. I was told here that I should look for bubbles in the reservoir and that would tell me if I have a problem with heads. I saw no bubbles. Thank you in advance for any help I can get--My mechanic is looking at it again today!!!Is it protocal to change out thermostat when adding freon?you are getting ripped off. find another mechanic. my Chrysler Concorde started overheating when i added freon to the system . i replaced my thermostat twice and that didn't help. come to find out the electric fans didn't come on when my AC was turned on , have them check your fans to make sure they operate properly or you may have to replace them . you can get some high volume fans at the parts store that will help you better than the stock ones. you are not the only one with this overheating problem , many intrepid and Concorde have this problem which they failed to fix at the factoryIs it protocal to change out thermostat when adding freon?You don't change the thermostat when adding freon. Totally different systems. There are many reasons for over heating. Hopfully your mechanic knows what he's doing and covers all the bases before condeming your cylinder heads. Good luckIs it protocal to change out thermostat when adding freon?If that's the same mechanic that changed your thermostat when he added freon you definitely need to get a new mechanic cause he don't have a clue or hes ripping you off.Some things that could cause overheating are a bad water pump or belt that runs the pump,a blocked up radiator from road debris or it needs flushed out or it could have a blown head gasket or a cracked head.

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