So far i have replaced the blower motor, relay, resistor, heater control panel, and ignition switch It still only works on high I have run out of ideas on what to try next. Does your blower motor/fan only run on high speed.or not at all In this video, we talk about the cause and effect that leads to blower motor resistor failure. When a blower motor only works on high speed, it usually indicates a problem with the blower motor resistor, which controls the fan speeds
This issue can also be caused by a faulty fuse, relay, or wiring within the hvac system Replacing the blower motor resistor or checking the electrical components often resolves the problem. If you're short on time, here's a quick answer to your question There are several possible reasons why your car heater only works on high, including a stuck heater control valve, low coolant level, broken temperature door actuator, clogged heater core, or failed blower motor resistor. In other designs, the failure of 1 resistor means you lose only one speed However, most car makers bypass the blower motor resistor completely when you move the fan speed switch to high
This is the most common failure mode. The only fan speed that works is high None of the other speeds at all Any help is always appreciated. Every now and then , it seemed to work , then back to high only All info pointed to a blower motor resistor replaced it , the.
If you want to know why you have a car fan that only works on high, you likely have a problem with the blower motor resistor Find out why this happens and if you should replace the blower motor and blower motor resistor together with these tips from our expert mechanics. On a 98.5 is there a common problem and fix when the blower motor only works on one speed Mine only works on high Hi, my 05 colorado fan only works on high (#4) 1, 2 and 3 nothing blows, turn it to 4 and it blows hard like it is supposed to I figure it can't be a fuse as it blows on 4.
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