Cadillac STS-V Series Forum Discussion, Thermostat Replacement with OEM? in Cadillac V-Series Forums; Those of you who had their thermostat replaced with a new OEM part, have you has the "ENGINE HOT - ...
Those of you who had their thermostat replaced with a new OEM part, have you has the "ENGINE HOT - AC OFF" error ever return? If the actual design is faulty, should I just have a third party (Stant or similar) installed?
I'm at about 47k and have been getting the notorious message, and i'm finally getting around to getting the thermostat replaced. Warranty is out, so I was going to find a shop to do it, and flush my coolant at the same time.
Sorry I was just trying to answer your question about having someone change it for you and what to use. You can do it yourself if you have a deep 10mm socket. Its just 2 bolts and you don't even have to take off any hoses.
I think the factory has a tendency to freeze up and not open correctly.
Thanks for the info. Searches turned up people getting it replaced under warranty, or people who installed a lower temp thermostat. I'm still unsure if I should get an oem part, or a Stanton (or other) "factory" replacement.
While you brought it up; I was under the impression that at least some of the coolant had to be drained to get to the thermostat? If that's not the case I'll swap the part out now and do a flush a little later.
Nope. You loose a small amount when you take it off so obviously do it when the car is cold. I would bet it is 2 cups or less. It was not even enough to trigger a low coolant warning. The system will purge by itself. I just opened the overflow tank a few times to let out the air after she ran for a while. Any local parts store should have a factory style replacement for under $25. I reused the factory rubber gasket as it has an additional ring around another tube. You will see what I mean when you get to looking at it. The hardest part was getting the factory T-Stat out of the housing. Mine was wedged in there pretty good.