Question about Cars & Trucks
Hey guy, did you check to see if the hot water valve on the heater hose under the hood is opening and closing? If not, that's the next thing to do. Have someone sit in the car and move the temperature lever back and forth froom cool to hot and see if the valve lever is moving the total distance. If not, it is not letting hot water into the heater core. Also, check out the fan unit switch, it probably has burned out contacts on the 2 lower speeds.
Posted on Jan 05, 2013
Lack of heat is probably the blend door on the heater plenum. The motor only working on one speed is the blower motor resistor. The resistor is mounted on the plenum too, Look behind the glove box for the resistor and see if the blend door lever is there. It could be controlled by vacuum or other method. Move the heat control on the panel and see w hat is supposed to move. The lever on the blend door might be loose or broken..
Posted on Jan 05, 2013
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Posted on Jan 02, 2017
SOURCE: blower speed
you need to replace the blower risistor. it should be located very close to the blower motor. it usually has 3 wires that are in a row and one wire a little to the left of it but located on the same oval fixture. go to the auto parts place and buy one . this way you will no exactly what it looks like so you do not have to spend a lot of time and money researching it.
Posted on Sep 21, 2008
SOURCE: Cant get heat in the cab
Make sure that you have 2 heater hoses going into the dash. These are 5/8" hoses coming from the water pump and going into the top of the engine. The 2 hoses go through the firewall into the heater core. If you don't have the 2 hoses going to the heater core, the previous owner may have it routing itself back to the engine. It the hoses are routed back to the engine, there's a chance of the heater core being bad as well and this is why it's by-passed.
Posted on Nov 09, 2008
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