Question about Cars & Trucks
The resistor is on the ground side. This means that power goes the the blower first. Then through the resistor, then through the switch. And then I ally to ground. There should be power on the dark green wire at the blower motor with the key on. With the blower motor switch in the off position and the key on there should be power on every wire at the resistor. If there is no power on any wire and there is power on the dark green wire at the blower motor, than the blower motor is bad. Try tapping it with the handle end of a large screwdriver with the key on and the switch set to high. If it starts working replace it.
Posted on Nov 04, 2012
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Posted on Jan 02, 2017
it could be the heater controls itself i had a 95 ford f150 that did the same thing i replaced everything i could as i live in upstate ny and in the winter it gets pretty cold so replaced all i could ,heater coil,radiator,thermostat,coolant and nothing a local mechanic told me to check the control in the dash to see if it was going all the way to the hot position. i took the dash apart to get to it and checked it and the cable that mmoves the valve on the heater coil was stretched so it wasnt going all the way to hot. not that its the same thing but its a place to start
Posted on Jan 10, 2009
SOURCE: heater blower switch broken
mine was doing the same, then just quit all together. I went and got a resistor and everything is working again. Pretty easy to replace as well.
Posted on Feb 08, 2009
SOURCE: heater control valve
Where is the thermostat in a dodge dakota 1992 located? Flushed it yesterday still just have heat blowinf ti side vents rather cool windsheild defrost. Maybe there is another problem?
Posted on Mar 14, 2009
It has been a long time since I've replaced one of those. From what I remember you don't have to go through pulling the heater box out. You do need to remove the glove box assembly. Look up under the passenger side of the dash. If you see the bulge of the motor/cover hanging straight down then remove the cover and the motor will be there. If you don't see that then te motor is mounted horizonally. If that is the case then the fresh air door assembly will need to be removed and it is behind that.
Here is a quick check to see if the motor is bad. Thump the bottom of the heater box by the passenger's feet. if the motor comes alive or makes noise then it is bad. Also check the fuse and make sure that it doesn't work on any speed. (the resistor would prevent operation on only one speed or more but generally not all speeds)
Posted on Apr 05, 2009
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