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« on: April 28, 2006, 05:58:53 PM »
I'm posting this here, even tho it's automotive, cuz ya'll seem like you've probably tinkered with a few cars in your day too.
1995 Oldsmobile Cutlass Supreme.
I keeps overheating, but just barely. If I rev up the engine, it cools off.....
I checked coolant level. Peachy, it's full.
I took apart the water pump, becasue it's really easy to do on this car, and is easy to get to. No problems there, spins free and smooth.
I started it up, and the coolant line coming out of the engine never gets warm. I'm thinking thermostat (which I would normally check before water pump), but I can't get to the bastard without tearing the top half of the engine apart.
But, I noticed something else. As the temp gauge is approaching "oh shit," the cooling fans on the radioator never turn on. NEVER. Do they have a seperate temp sensor on the hot side (maybe mounted to the radiator) that is not tripping because the coolant isn't moving?? If so, anomoly explained. Dig for the Thermostat. Or, am I looking at a bigger/different problem than the thermostat?
I'm hesitant to do as much work as is needed to reach the thermostat, just to discover that it's not the problem. Is there soemthing 'special' that I don't know about this system?
I'm not familiar with this vehicle, it's only been in my care for a few weeks. Anyone got experience with this system? Input is appreciated.