Quote:
Originally Posted by Miller88
Been there, done that. The first time it wasn't on my dime. I don't want to throw another $200 thermostat at it.
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Another possibility is that they knocked the wire off the temperature sending unit.
Best way to check for that is to let the engine run and see if the EXIT cooling hose (the one connected to the thermostat housing) gets hot when the thermostat opens (maybe a few minutes). If the hose suddenly gets hot then the thermostat is working but the temperature gauge is not reading properly, most likely that could be fixed by just reconnecting the wire to the temp sending unit.
Easy for that to happen on modern engines where those things are buried in places that are not easily accesible, but it's hard to believe that any decent repair shop would not check their work and make sure everything was working as it was designed.
regards
mech