Question about 1995 Oldsmobile Cutlass Supreme

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1993 cutlass supreme run hot

I've flushed and drainrd the radiator, replaced the coolant, changed thremostat and water pump. I have not changed the oil or checked the cooling fan or fuses

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  • Mikejones112 Sep 07, 2008

    Don't know how to get all the air out of the system.

    I let the engine run while filling the reservoir with 50/50

    coolant and the heater blowing high and hot. Once the

    coolant level is filled I close everything up and drive it til

    the coolant light on the dashboard goes off but the light

    never goes off and it still runs hot. I have changed the

    fan fuses and prior to this situation the fans didn't work

    and even with changing the fan fuses, it still son't work.

    This tells me that I must replace the double fans that

    are there because neither has worked for a long time

    now that it's been mentioned. How do I get all the air

    out of the system and what is your thought on replacing

    the fans from local junk yard or should it be purchased new? .

  • mijerzzz Oct 27, 2008

    i have the same problem but only the d/s fan works only with the a/c on compressor cycling the p/s doesn't work the fans don't operate normaly but the car nver overheats so i must have got all the air out,temp needle is @ 3/4 way up above middle needle but not in the red.



    What should be next?

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  • 319 Answers

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

Posted on Sep 06, 2008

  • Brian Berndt
    Brian Berndt Sep 07, 2008

    On most GM vehicles one fan will come on whenever the A/C is on, I beleive it is the passenger side. The other (drivers side) comes on when the temperature reaches a certain point, to draw air thru the radiator.



    A new complete fan is around 100, you can purchase just the motor, but it will be more labor intensive. If you can find one at a junk yard, it could be worthwhile, if they will let you make sure that it works, and the price is cheap.



    If I understand you, the coolant level light stays on all the time? If so, you may have a problem with your coolant level sensor. You may have coolant, but it is not registering, because of a bad sensor.



    The best way to get all of the air out of the system? Make sure you wear saftey equipment! It is best to jack up the front of the car (safely using jackstands) in order to get the radiator higher than the engine (air pockets like to exist in the thermostat housing, heater core, and other places). The air pockets will want to go to the highest point. Turn on the heater, open the radiator cap (cold). Start the engine, and let it run at idle. Try to maintain the level just above the radiator core. You may need to allow to run for 20 mins at idle to get all of the air out!



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