Q: the ac only works on defrost

asked by on February 01, 2017

When I try to turn the A/C on it will only blow out through defrost

My car has 150000 miles.
My car has an automatic transmission.

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・Fair and transparent pricing


Experienced Mechanic?

Earn up to $70/hr

What others are asking

How do I delete the call history from my hands-free system?
Your hands-free system tracks calls made and received while the system is active. You can use this information for a number of things, including calling a number back. However, you may find that you eventually want to delete one or...
How do I scroll through the radio stations?
Scrolling through the radio is very easy. Simply press the Tune soft key, then use the Left/Right buttons to scroll (press the button a second time to stop scrolling), or rotate the Tune knob.
Gas not making it to carburetor or fuel pump
A fuel pressure test will have to be conducted to see if enough fuel pressure is making its way to the fuel injection system. If not, the problem could be a bad fuel pump (https://www.yourmechanic.com/services/fuel-pump-replacement) or a power to the...
I'm not sure if it's a thermostat or the water pump that needs replaced
The heater not working in some cases may be related to the overheating problem you are also having. This may be due to a faulty heater blower motor or potentially a bad heater core (https://www.yourmechanic.com/services/heater-is-not-working-inspection). As you may know, the...
I was driving down the road and car died and will not start it sound like it wants when I check radiator fluid it was empty
Hello, thank you for writing in. You will want to find out why the coolant is empty. However for the moment, you need to treat the stall and no start situation separately from the lack of coolant issue. Chances are...
My 2004 suburban has D 3 2 1 what should I drive in D or 3
The computer controlled automatic transmissions in today's vehicles are designed to be completely intuitive. You will not gain any performance advantage, or gain in fuel economy, by driving around town with the shifter in the 3 setting. For the best...
Heater air is blowing out cold on the passenger side of the vehicle when the heater is on, warm on driver side 2011 Dodge Journey
Hello - your "no heat" problem (https://www.yourmechanic.com/question/no-heat-on-passenger-side-by-andy-k) sounds like an ambient air temperature sensor on the passenger side with problems, or a malfunctioning air blend door inside the heater air box. I would recommend a heater inspection (https://www.yourmechanic.com/services/heater-is-not-working-inspection) by a...
4x4 inactive and abs light
As a vehicle ages, sensors and monitoring systems can develop "glitches"; either due to excessive dirt and debris or the connections becoming loose. This can sometimes trigger system warnings as you've described above. Since the dealership was unable to determine...
I have a 1987 chevy blazer S10, replaced brake light switch still no brake lights, whats wrong?
There is either a wiring break or perhaps excessive voltage drop on the circuit, that is a high enough resistance to prevent the required voltage from reaching the bulbs. Whatever the cause of the circuit failure, a Mechanic would simply...

Related articles

A Buyer’s Guide to the 2012 Buick LaCrosse eAssist
Buick Buick has entered the hybrid market in a big way with the 2012 Buick LaCrosse eAssist model. It has all of the same great looks and features that you would expect from a luxury sedan from Buick. However, the...
A Buyer’s Guide to the 2012 Buick Enclave
The The 2012 Buick Enclave was created specifically for younger buyers and those with growing families who have a taste for luxury. The Enclave is available in four levels which include: base, convenience, leather, and premium. It has ample room...
The Best Used Cars to Buy for Towing Light Loads
Towing Towing is tricky business and depending on the weight you’re dealing with, it really determines what vehicle is best for you. If it’s light loads you’re looking at towing, we’ve put together a list of the top five cars...