Why does my Chevy blower motor not work?
I had a Bad Relay. I got one here https://amzn.to/2PSr6fQ It seems the 88-94Trucks have a different system to control the speeds than the 96-00 OBS style Ch… I had a Bad Relay. I got one here https://amzn.to/2PSr6fQ It seems the 88-94Trucks have a different system to control the speeds than the 96-00 OBS style Ch…
What are the symptoms of a bad blower motor relay?
Any sort of electrical spikes or excessive current from a bad relay will blow the fuse and cut power in order to protect the system. 3. Melted relay Another more serious symptom of a problem with the blower motor relay is a burned or melted relay. Relays are exposed to high current loads and can sometimes get hot when they develop problems.
What happens when a blower motor resistor fails?
The blower motor resistor is the component directly responsible for controlling the blower motor fan speed. If the resistor shorts or fails, it may cause the blower motor to remain stuck on one fan speed.
What causes a fuse to blow on a blower motor?
If the blower motor relay develops any sort of problem that hinders its ability to properly limit and distribute power, it may cause the blower motor fuse to blow. Any sort of electrical spikes or excessive current from a bad relay will blow the fuse and cut power in order to protect the system.
What to do if your help blower motor is not working?
It can be replaced (soldered in) with a part from Radio Shack for about $1.79. (search resitor pack) Usually if its the thermal fuse the blower fan will still work on switch position “4”/high. If you get nothing at any setting, its most likely the switch or a wire/connector issue.
Can a bad ground cause an AC blower to fail?
Never rule out a bad ground. It certainly is not always the problem, but the grounding circuit is every bit as important as the positive (negative in some cars like my old Sunbeam Imp). It fails less often, but it can fail. The heater/ac blower does not come on.
How many volts does a blower motor have?
Checked fuse, okay; checked volts at wiring leads have full 12volts. Pulled fan/blower unit and placed 12volt battery directly to it and got it to work; but the terminals i used were the opposite that it would receive from being attached to the wiring connector (meaning the positive vs negative).
How to replace a blower resistor and motor?
Easy video on how to replace blower resistor and motor with 1 screw driver and in about 10min. Remove glove box, pop bottom panel off to gain motor access. Disconnect cables to motor and resistor. Remove hose from motor, it should just pull off with little effort. Unscrew motor and resistor. Screw new motor and resistor in. Connect hose to motor.