Q: AC not working correctly

asked by on January 22, 2016

The AC in my car comes out colder on the passenger's side when compared to the driver's side, and is putting out hot air through the floor vents. The auto store person mentioned that it might need a modulator. I also have a slow oil leak.

AC is not working Inspection $96.46 - $116.46 Get a Quote
Oil/Fluid Leak Inspection $79.99 - $99.99 Get a Quote

Hi. When air comes out of the vents at uneven temperatures, the blend door actuator is usually at fault. Either debris buildup is blocking the door from moving or the electronic actuator on the door itself is malfunctioning. A technician can usually spot the actuator if they look into the dashboard while someone is operating the AC controls. Have a mechanic inspect the AC system in your vehicle to eliminate further complications. Also, most oil leaks originate from the valve cover gasket or oil pan gasket. I strongly suggest having a training technician inspect the engine seals for leakage.

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

What others are asking

How do I deactivate my anti theft system on my 2010 equinox?

Hi and thanks for contacting YourMechanic. The best way is to remove both the battery cables from your car battery and leave them off for 12 minutes. Then put the battery cables back on and tighten them up tight. Take...

Ford Fiesta TDCi starts and stall immediately

If the engine overheated, there is the possibility of engine damage (stuck valves, etc.) so it might be necessary to test for basic cylinder compression. If the engine is mechanically sound, what you are describing is diagnosed in a stalling...

Why when I went to check my oil the stick was full of oil like the whole stick

Hi there. When you first remove the oil dipstick, it will typically be covered with oil. This is why the correct procedure is to wipe the excessive oil off the dipstick, reinsert and check the oil level after that. In...

alternator replaced 2 weeks ago and now transmission fluid bubbled and leaked all over the drive

Replacing the alternator does not implicate the transmission. These are completely unrelated vehicle systems. I suppose it is possible that a Mechanic could have added fluid, and to the wrong level, without your permission. Overfilling, as well as under filling,...

Starting trouble

Hi There, It sounds like you have a weak battery. If the lights dim when you turn the key to start the motor, this suggests that the battery simply does not have the proper cranking power to turn the motor...

shake around 45-50 mph 2006 Honda Odyssey

Hi there, thanks for writing in about your 2006 Honda Odyssey. Try to drive your vehicle in 3rd gear without overdrive on and see if problem goes away. The problem is at the speed where the lockup torque converter locks....

Car will not shift into fourth gear - 1991 Mercedes-Benz 300SE

Hello. I would check the condition of the transmission fluid first as well as the level. If the fluid is old or low then this will occur. If the fluid smells burnt or has debris in it then the transmission...

side mirrors adjust automatically with memory seat but not independently from control on armrest

Hi there, thanks for writing in. Once the seat memory is set it can only be changed to a new position unless the memory seat module is either replaced or reprogrammed with the correct scan tool. As for the mirrors...

Losing coolant air conditioner and heat not turning on at all

Hey there, thanks for writing in about your 2003 Chrysler Sebring. The problem is that you are low on coolant and the A/C needs to be diagnosed to see why it is not working. If you have a coolant leak,...

Related articles

How Often Does an AC System Need to Get Recharged?
Your car’s air conditioning system is a lot like your home’s central heating and air, and even more closely resembles the system that keeps...
What Sensors in the AC Tell the Car If the System Is Working or Not?
The The average car today contains a bewildering range of sensors that feed information to various computers to monitor everything from air intake to emissions and engine timing. Your car’s air conditioning system also contains a couple of sensors that...
How to Quickly Cool Down a Hot Car
Knowing Knowing how to cool off a hot car that has been sitting in the heat and sun can save you the discomfort of having to sit in your vehicle's hot interior while driving to your destination. By taking a...