Question about 1996 Isuzu Trooper
My blower motor only works on high. Is this a switch or motor problem most of the time.
If the blower motor works on high, the resistor is the fault. Check condition of wire harness when you replace the resistor, if there is any corrosion on the connectors in the harness- replace that section of harness as well, otherwise you will likely have another failed resistor and potentially have a fire hazard as the corroded terminals heat up and current draw through the wire increases as well.
Posted on Feb 19, 2012
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Posted on Jan 02, 2017
SOURCE: Heater Blower won't work
There was a bulletin reguarding water contaminating the blower motor, which overheats the blower resistor and renders it inoperative. The fix was to replace the blower and the resistor and seal the culprit hood cowl screw at the base of the windshield, which is the second screw from the passenger side. They say water drips off of it down into the fresh air opening.
Here's what I'd do: Assuming your switch and blower motor is good, replace the blower resistor. Remove the blower motor and see if it spins without any excessive drag. If it's okay, reuse it. If it's dragging, it will overheat your new resistor in a short period of time and you'll be back at square one. The blower resistor is mounted to the front of the case with 2 screws to the left of the blower motor. Remove the glove box and you'll see it.
The Hood cowl screw is straight down into the cowl, the second one from the right side, about 10-12 inches from the right fender. Pull it out, put some sealer on it, and reinstall it.
Posted on Oct 02, 2009
SOURCE: AC blower motor
i had the same problem on my 2002 Axiom, I took it to the dealer and they said the blower motor is going out. They replaced it with a new one and it works fine now!
Posted on Dec 13, 2008
if fuses are good, check for power at blower motor, when truck is running and a/c on. the resistor and the switch provide ground, so the blue/white wire should have power, and the blue/black wire should have NO power, if it does have power, then most likely the resistor is bad. if it has no power and the motor doesnt run, the motor is bad.
Posted on Oct 20, 2009
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