Q: No heat,defrost or air coming from front a/c vents

asked by on

No heat defrost or air coming from front a/c have replaced blower motor twice with in the last year everything work in back vents I noticed a sticky substance on the Connector to blower motor and on the resistor so I cleaned with connector cleaner re connected it and nothing happened but I did smell something burning

My car has an automatic transmission.

Hello - there a couple of possibilities here for this problem: the blower motor resistor pack, or the fan switch portion of the HVAC control itself. The blower motor resistor pack regulates fan speed in the Low or Medium positions, but NOT the high speed/Max position. If the fan works in the high speed or Max position, the resistor pack has failed. If you have no fan operation in any fan speed position, the fan switch or wiring (incl. ground wire) has a problem and will need further diagnosis. I would recommend having a Heating-AC Inspection completed by a mobile, professional mechanic, such as one from YourMechanic, to diagnose this problem, get an accurate assessment of damage and cost estimate for repairs.

Was this answer helpful?
The statements expressed above are only for informational purposes and should be independently verified. Please see our terms of service for more details
  1. Home
  2. Questions
  3. No heat,defrost or air coming from front a/c vents

Get an instant quote for your car

Our certified mechanics come to you ・Backed by 12-month, 12,000-mile guarantee・Fair and transparent pricing

Get a quote

What others are asking

Q: where is my blower motor or blower resistor?

The blower motor and blower resistor is located in the right side of the dash under and behind the glove box.

Q: Where on the alternator is the amp stamp

If your vehicle has the optional, factory installed towing package you will have the 160 amp alternator. If you never intend to tow anything the lower capacity alternator is fine and will fit. If you do not know whether your...

Q: How to activate the rear defogger?

Whether your Accord has a manual A/C, auto A/C or a built-in navigation system, activating the rear defogger is done in the same way. Find the button on the dash that says “Rear” and has a picture of...

Related articles

How to Avoid Back Pain in a Car
If you have back problems, sitting in a car for an extended period of time can be excruciating. Even without back problems, you could experience discomfort and soreness from...
What are the Car Pool Rules in Hawaii?
Hawaii is widely regarded as a land of vacation and relaxation, and as such, its scenic roads and routes are far better known than the state’s freeways. But, as with all...
P2103 OBD-II Trouble Code: Throttle Actuator Control Motor Circuit High
P2103 means there is a fault with the throttle actuator control motor circuit, likely due to a defective electrical component or part.