Hi, all - started the truck in extreme cold, about 0F. Noticed that the truck's water temp was increasing way, way faster than normal, as it usually takes several minutes. Truck drove normally, drove back, same problem. Sat and let it idle, brought revs up to about 3k and it did manage to hit 218F, yet the heater never blew warm air.
I turned it off so as not to toast my new head gasket/engine/etc - new water pump and thermostat, too, and heard a loud grinding noise (or, possibly a distorted gurgling sound) coming from near the radiator, seemingly from the top skinny hose area? Disconnected the battery, and it kept going! I bet it's going right now. Coolant overflow tank isn't empty, and also not full, coolant is clean, too. Is it possible that the thermostat never opened, somehow? What could possibly cause a grinding noise AFTER the engine is shut off? I don't suppose it could be something as simple as a failed radiator cap sucking air?
No fluids on the ground, no oil leaks, no coolant leaks, etc. The truck seemed fine yesterday. It's been fine in weather like this.
Any ideas on this one? I do worry about overheating it.
I turned it off so as not to toast my new head gasket/engine/etc - new water pump and thermostat, too, and heard a loud grinding noise (or, possibly a distorted gurgling sound) coming from near the radiator, seemingly from the top skinny hose area? Disconnected the battery, and it kept going! I bet it's going right now. Coolant overflow tank isn't empty, and also not full, coolant is clean, too. Is it possible that the thermostat never opened, somehow? What could possibly cause a grinding noise AFTER the engine is shut off? I don't suppose it could be something as simple as a failed radiator cap sucking air?
No fluids on the ground, no oil leaks, no coolant leaks, etc. The truck seemed fine yesterday. It's been fine in weather like this.
Any ideas on this one? I do worry about overheating it.