Q: Aircond fan sometimes does not turn on when ac is on but turns on when radiator fan is on

asked by on

My 2002 lexus LS430 aircond sometimes blows warm air but it turns cold as soon as the aircond fan turns on (it turns on at the same time when the radiator fan turns on), But shouldnt the aircond fan be on when the ac is on and turns off when ac is off? Or is it about time for the aircond fan motor to be replaced? This only happens intimmitently though

The a/c compressors are known to intermittently not engage on these vehicles and once the systems pressures are verified and no other component is tested bad then the compressor clutch should be checked to see if it is getting power when not engaging to see if clutch is worn and not engaging. If it is getting power and not engaging intermittently then the compressor may need replaced. Have the system checked for a defective compressor clutch.

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. Aircond fan sometimes does not turn on when ac is on but turns on when radiator fan is 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: Vibration from rear deck

In order to try and locate a vibration due to an aftermarket radio with heavy bass you would need to try and touch each body part until you find the part that is vibrating and then a fix may be...

Q: A/C won't turn off. 2006 Ford F150

Hello - there are 2 possibilities here: (1) an electrical switch - HVAC control in the dash or the low pressure switch in the refrigerant line) is keeping voltage on the compressor clutch, keeping it engaged, or (2) the compressor...

Q: Lexus LS430 Cruise control speed limit

The 2001 LS430 Owner's Manual refers to an upper limit of 85 MPH in terms of cruise control settings. Apart from that, there is no ECU limit or user-programmable upper speed limit. On some cars, you can program individual keys...

Related articles

How Long Does a Distributor O Ring Last?
The distributor is part of the ignition system in your vehicle and its purpose is to route high voltage from the ignition coil to the spark plug. The spark plug then...
How Long Does a Heater Control Valve Last?
Keeping the right amount of coolant in a car is essential in keeping the engine at the right temperature. Failing to have the right amount of coolant or even bad elements...
P0052 OBD-II Trouble Code: HO2S Heater Control Circuit High (Bank 2 Sensor 1)
P0052 code definition HO2S Heater Control Circuit High (Bank 2 Sensor 1) What the...