How do you know if a blower motor is bad?
What Are Signs Your Blower Motor Needs to Be Replaced?
- Poor or Airflow from Air Vents. This will be the first and most obvious sign your blower motor has a problem.
- No Airflow At All From Vents.
- Skyrocketing Energy Bills.
- Strange Noises When You Turn on the Heat.
- Overheating Blower / Weird Smells.
Why is my heater blower not working?
If you see or hear the fan turn on, your blower motor is not the culprit. If the fan does not start, you have a wiring issue (circuit breaker trips) or motor problem (circuit breaker does not trip). While your thermostat may be at fault, only an HVAC technician can diagnose and remedy the issue correctly.
Why does my heater not work on high speed?
Heater blower motor will not work on high speed? I have replaced the black bosch relay behind the glovebox, the blower resistor and the blower motor and still cannot get the blower to work on high. I remember in older model years of gmc’s and chevys that their was a high speed blower relay that caused this issue.
What’s the problem with my blower motor fan speeds?
Probably a bad blower motor resistor you have there, or possibly a faulty blower motor or switch. The most common thing would be the resistor assembly, as that goes out more often than the other parts. A quick check with a test light can determine failure. No Heat In My 2000 Chevrolet Malibu – Blower Not…
Why is my F150 heater fan not working?
When a Blower Resistor fails it can fail in many ways. 1 being the fan won’t turn off unless you pull a fuse 2. you may only have one speed as i suffered high or nothing. 3. you have may not have any fan at all. while there is many reasons for this to fail which includes high resistance in the blower motor. Loading…
Why is my heater blower motor resistor not working?
This occurs due to the failed blower motor resistor not being able to control the flow of electric current, it could be that the resistor is somehow bypassed and the power is directly being fed from the switch. Excessive current can overheat and permanently damage the blower motor resistor