Skip the auto shop - Our mechanics make house calls

Q: Engine dies after I turn on air conditioning

asked by on

My engine dies as soon as I turn on the air conditioning.

A: Engines have sensors that are used to give ...

Engines have sensors that are used to give feedback to the computer about what is happening. If one is not working then the computer doesn't really know what to do. In your case, the air conditioning has pressure sensors that let the computer know that you have turned the air conditioning on. The computer will then respond by kicking up the idle speed of the engine some to compensate for the extra load. The same thing happens when you turn your steering wheel all the way, the computer kicks up the idle to deal with the extra load on the engine. I suggest seeking the help of a professional mechanic, such as one from YourMechanic, to help you properly diagnose your car's stalling issue. The mechanic will have access to the wiring diagrams and diagnostic information needed to determine which sensor is faulty.

Was this answer helpful?

Need advice from certified mechanic? Get help now!

Over 1000 mechanics are ready to answer your question.
The statements expressed above are only for informational purposes and should be independently verified. Please see our terms of service for more details

Get an instant quote for your car

Our certified mechanics come to you ・Backed by 12-month, 12,000-mile guarantee・Save up to 30%

Get a quote

What others are asking

Q: My car is making some funny noise from the left side

Does the noise get any worse while steering the vehicle around turns? The squeal tabs on brake pads can make noise when the friction material is almost worn out. A failed wheel bearing will make noise at speed and may...

Q: SUV would not accelerate and all warning lights came on - 2009 Kia Borrego

A failure of the electrical system can come from a loose or broken connection at the battery or an alternator failing to maintain the charge. You may want to hire a second source for another opinion and maybe another estimate...

Q: Car shaking when slowing down.

A possible cause of this issue could be a warped brake rotor or a loose suspension part such as a control arm bushing. If your brake rotors are warped and the brakes are applied, this can send pulsation to your...

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 Much Does a Mechanic Make in Vermont?
Automotive technician jobs in Vermont have an average mechanic salary of $37k, with some mechanics earning a salary of $53k.
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.