Q: Heat/AC blower turns off and on

asked by on

Blower intermittent. Shuts off when button on and turns on when button off. Has even stayed on after car is,shut down and keys removed from ignition. Heat and AC are OK. It is just the fan/Blower. I was told it's probably a switch loose. How can I have this properly diagnosed and repaired,

My car has 130000 miles.

Hi there. Check the switch for any loose wires or shorts from the blower motor switch to the ignition switch. Check the condition of the wire connections for an corrosion and see if the wires are loose on the ground. If you need further assistance troubleshooting your vehicle, then consult with a certified technician from YourMechanic, to diagnose the heater/ac and move forward with 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. Heat/AC blower turns off and on

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: Q: Rattling sound

Hi. Maybe the light is the rattling sound you're hearing. If the light housing is loose, it will vibrate upon acceleration and cause noise. However, your rattling noise has countless potential causes. The only way to find the answer is...

Q: Q: Heater not working

There are several reasons for a heater not to work. This could definitely be a problem with the heater's core or a valve, as you mentioned. It could also be something related to a blown fuse, a bad water pump,...

Q: On take off my car jerks to a stop then accelerates as if it's on its own.

Hello, thanks for writing in. It sounds like you may have a few different problems going on here. The noise you are hearing is coming from the belt. Most of the time it is due to the belt being loose...

Related articles

P0240 OBD-II Trouble Code: Turbocharger Boost Sensor B Circuit Range/Performance
P0240 code definition Turbocharger Boost Sensor B Circuit Range/Performance What the P0240 code means P0240 is an OBD-II generic code triggered when the Engine Control Module (ECM) detects the intake boost...
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...
P2428 OBD-II Trouble Code: Exhaust Gas Temperature Too High Bank 1
P2428 code definition A P2428 trouble code signifies that the PCM has detected a problem in the exhaust gas temperature sensor circuit in bank 1, which subsequently contains the number one...