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? 1:26 www.youtube.com/watch?v=VwU-LRDzzUY Feb 10, 2010 - Uploaded by Channel Zero
Blower motor resistor switch. Intermittent fan when this part goes bad. air conditioner ...
now it needs to be pressure tested for an internal or external coolant leak. If the water level keeps dropping in an engine the coolant temp sensor will never tell the computer when to turn the fan on. was the air ever purged out of the cooling system? Because, the temp sensor will never get a reading if coolant levels are low and will never tell the computer when to engage the fan. Does the A\C work? Does the fan come on for the A\C?
It is likely that the heater core has sprung a leak, or the hoses leading to the heater core have failed. This would cause a loss of coolant that would make the coolant temperature sensor think it wasn't necessary to turn the fan on, and would cause steam to appear to rise out of the back of the engine. If you turn the heater on inside the passenger compartment and get steam through the vents, it's DEFINITELY a heater core breach. Otherwise, check the hoses leading to the heater core and make sure they are still connected and not leaking. Good luck!
have a pressure test done on the cooling system to check for leaks. have a flow test done on the radiator to check for blocked cores. Have a compression test done to check for head gasket or cracks. If you have a viscous fan hub on the fan then replace it if the heating is indicated at stop lights and slow traffic. If automatic check that the transmission oil temperature is not overheating and putting that heat into the radiator from the oil cooler in the radiator tank
Let the car warm up and then pull it onto a clean driveway or over cardboard so you can see where it is leaking. Usually vehicles will leak more when the vehicle is running because the oil is hot and thins out a little. Might be around the oil filter or worst case one of the main seals.
I assume you mean the radiator fan. This might be indicative of a different problem. The main issue is, does the car overheat? If not, then it's probably a thermostat that's stuck open. A lot of things can fail in the fan system...the fan motor itself, a fuse, a relay, or the temperature sensor that tells the fan to turn on.
White smoke means water getting into cylinders. Usually leaking head gasket, or possible intake manifold gasket if the manifold is heated with water! You need to see your service people again. Weather conditions should never cause this problem. The oil leak might be fixed by tightening all of the perimeter bolts on the oil pan.
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