Q: Air conditioner makes clicking sound when truck turns on, low air pressure unless max AC is used

asked by on

Not sure if it's the actuator or accumulator needing repair.... makes clicking sound when turned on and low air pressure unless max AC is selected

When the engine turns on, if the A/C switch is off, the compressor clutch is not engaged so the only "noise" should be from the compressor pulley freewheeling. If the air flow is too low at the lower blower speeds, that would suggest a problem with the operation of the blend doors or perhaps the blower motor. If you feel the cooling efficiency is low, that is the air blowing out of the vents is not 40 degrees or so less than ambient, considering these other issues you are having, your best bet is to just request an air conditioning system diagnostic/inspection. The responding certified Mechanic, dispatched by YourMechanic right to your location, will get all the problems investigated and resolved for you. If you have further questions or concerns, do not hesitate to re-contact YourMechanic as we are always here to help you.

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. Air conditioner makes clicking sound when truck turns on, low air pressure unless max AC is used

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: right side steering pulls to the right

From what you described about your 2000 Ford Focus, you may have a bad tie rod end or a bad tire. Have the front end inspected and checked for damage. A vibration is most likely a tire or bearing, and...

Q: loud buzzing on driver side while in motion. no dash lights on?

Hello, thank you for writing in. There are several moving parts that can cause a vibration in regards to the air conditioning system. You or a technician will have to go through the components one by one until the vibration...

Q: undercoating

If your vehicle is already in service, there is probably some rust and corrosion already on the underbody. Undercoating is useless on those segments because the rust will simply continue unabated once coated. There is little, if any added benefit,...

Related articles

What Causes Hoses to Leak?
While the largest part of your engine is mechanical, hydraulics plays a significant role. You’ll find fluids at work in a number of different areas. Your car's fluids include: Engine oil Transmission...
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...