When i start the car, some times i have power at the heater controls, means it's lite up and controls move from floor to defrost ect. then it will all just disappear. when it is on i get no heat, and no blower. fuses are good.car does not over heat at all. the low coolent light is on full time. have checked thermostat, water pump and hoses, all get hot. summer time hot air comes out from all vents. winter time or colder days i get nothing. have had control unit out and cleaned all connections. the steering wheel has controls in it also, all looked good there too.
Sounds like a bad ground to the heater console. Have you checked connections to the blower resistor? Are any of them rusty? Use a voltmeter and measure from a good ground to any metal place on the heater control assembly. Do you measure any voltage? If so, you have a bad ground!
SOURCE: No air flow from defrost vent on my van.
Could be a vaccum line leaking not changing the vent flap to defrost
SOURCE: 1993 cutlass supreme run hot
A common problem is that the electric fan will not operate. You need to determine if the fan is coming on when the vehicle gets warm.
When you replaced the coolant, were you sure that you got all of the air out of the cooling system? If you have any air in the system, it will cause your system to run hot!
Regards
Brian
SOURCE: engine overheating-----1994 Olds Cutlass Supreme 3.4 liter v/6
There seems to be an air pocket or no antifreeze in engine block. Try this method disconnect upper radiator hose and pour water directly into hose down into engine block until it full. when its filled reconnect hose and fill up radiator. as the vehicle warms up open bleeder valve on the thermostat housing and release air from system. open slowly and BE VERY CAREFUL WATER WILL BE HOT, bleed until you get a steady stream opening and cosing valve. However if all of this don't work. You may have a bad pump. Good Luck
SOURCE: 95 Cutlass Supreme Fan only blows on lower vent
It's been awhile but I think the doors are vacum operated
SOURCE: 1999 Olds Alero. Low coolant light comes on and
TAKE RADIATOR CAP OFF WITH ENGINE COLD AND CHECK WATER ..MAKE SURE RADIATOR NOT BLOCKED,,PLASTIC BAG ETC. THIS SOUNDS LIKE LOW WATER OR RADIATOR ..STOPPED UP INSIDE ..IF YOU HAVE GOOD HEAT IT'S FULL OF WATER. REPLACE T STAT B4 RADIATOR..IT'S CHEAPER. ALSO CHECK FOR RADIATOR COOLING FAN OPPERATION..I,M RULING OUT THE WATER PUMP.
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