Question about 1990 Buick LeSabre
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Posted on Jan 02, 2017
first unplug the cooling fan at its plug and supply 12v to the fan if it doesnt run then replace if it does run follow the power wire to the thermal water switch usualy located at the bottom of the radiator.Use test light/probe to check that you have power into the switch and when engine is hot you should have power both in and out of the switch.if not replace thermal water switch.If that is working you will need to find out why you have no power to the switch.Check that your fuse and relay is working correctly.Sometimes just pulling out the relay and putting back in will make it work due to poor contact.Also try swapping relays with others in the same box near battery to identify if relay is faulty
Posted on Oct 27, 2008
My name is Ron,Look on the firewall under the windshield ,behind motor,there should be a large cover .Remove this cover,and you will see a row of relays,the one that is warm or hot,is the one to remove(blower relay).When you remove the relay the blower will stop.this is the relay to replace. Hope I was some firstname.lastname@example.org
Posted on Aug 15, 2009
Are you sure the blower motor is defective? If the blower motor resistor pack is bad the blower will not work. Have you applied 12 volts directly to the blower motor to verify it is bad? I have not replaced a blower motor on your particular car but it is usually a labor intensive repair. Depending on where you have it repaired the cost could be as little as $150 and up. Hard to say without actually doing it. Replacing the Resistor Pack is a fairly easy repair, so hopefully that is your problem.
Posted on Dec 15, 2009
SOURCE: blower motor replacement
Here ya go!!!
Removal & Installation
Posted on Jun 03, 2010
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