Q: AC not working

asked by on September 29, 2016

Hi. I took my car to the dealer to have an oil change. My AC was working fine and gave cold air. After picking up my car, the speed (amount) of cold air the AC is giving is the same amount when I have it at a low speed as in in high speed. It doesn't matter what speed I have the knob it continues to give out the same speed with is low. Is it possible that the mechanic that changed the oil turned anything low to affect the AC?

My car has 120000 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

Why Does a Car Burn Oil?
During normal engine operation, all engines use oil to lubricate all of the internal moving parts of the engine like the bearings, camshaft, crankshaft, timing chain, valves, lifters, piston rods, and piston rings. There are two different ways that the...
What is fail-safe cooling?
Your engine is equipped with a feature called fail-safe cooling. Essentially, this is a technology that helps minimize the damage caused by overheating the engine. If the engine begins to overheat, the Check Engine light will come on and the...
Problems shifting into gears
Greetings. Tahoes for that year commonly encounter this issue due to shifter cables becoming faulty overtime. The cables will usually unravel and lose its ability to move the shift lever on the transmission properly. If you need further assistance, I...
Lights keep going out
Hi. Looking at the wiring diagram for your vehicle, I see that the daytime running lights (DRL) were only available in Canada. So, I'm not sure if you mean the DRL or the headlights and tail lamps. Regardless, the factory...
what do codes P1391 and P0340 mean?
The codes mean you need a camshaft position sensor (or something related to it such as wiring). Typically you replace the camshaft and crankshaft position sensor as a pair. The jerking/misfire sounds like you need a tune-up (https://www.yourmechanic.com/services/tune-up) at 112k...
My car cranks but doesn't turn over
Hi there. First, we need to determine what is going on. Does it crank and not start? or does the engine not crank/turn over? Cranking and turning over mean the same to technicians. You described it as cranking and not...
2012 Chevy Malibu oil change
The oil filter should not be damaged by over tightening it, however you may want to be sure that the threads on the filter were not damaged by tightening it too much as this may cause it to leak. Generally,...
Showing signs of a blown head gasket.
If there is a head gasket leak, as the engine heats up and expands, that may be sealing the leak somewhat and that would explain your experience. Based on what you are describing, it certainly sounds like a break at...
Heater works intermittently, when not working car overheats and thermostat is new
Hi there. In most cases, when you have issues with the heater working and the vehicle overheating, it's caused by an obstruction of coolant inside the heater core. The cooling system circulates hot coolant / water into the heater core...

Related articles

Symptoms of a Bad or Failing Heater Bypass Tube
If you see coolant leaking under your car or smell coolant from your car, you may need to replace the heater bypass tube.
Top Five Selling Cars in Colorado in 2012
Colorado Colorado offers a varied climate depending on where drivers are located. Those in lower elevations see plenty of sunshine all year, while those in the mountain areas can see as much as 300 inches of snow. Due to this,...
How Does a Car Air Conditioning System Work?
Auto air conditioners serve well on hot summer days to make driving more pleasant by cooling the air and removing excess moisture in the car.