Freon pressure for 2004acura MDX - 2004 Acura MDX

If you filled the tire, it should have went off. (bad sensor) If you had one replaced the shop should have reset it. If you had new tires put on, they also should have reset it and put in the locations of sensors.

is system fully charged with freon? also check the voltage on the pressure transducer. this sensor may be bad and showing low voltage and disabling the a/c system.

if there is a low freon charge it shuts the compressor off to prevent damage

if full off freon. check system for a leak. that is the most logical solution to this problem.

Just a thought: If your car has 2 electric fans under the hood one of them runs anytime your AC is on. Make sure one of them is running if you have 2. When your engine warms up both will come on. Check when the engine is cold to see if 1 fan comes on when you turn the AC on. Another thing which has happened to me. I had a bad AC relay after running a while it would get very hot when AC seems to quit working try feeling the AC relay if it is a lot hotter than the other relay that could be a problem. One more thought To add Freon the car has to be running and the AC on.

It sounds like the low pressure switch has gone out. If it goes out the compressor clutch will never engage.

you could check the oil pressure and check the oil pan for damage. if the pan has been banged in, then the pressure increases.

SCAN VECHICLE CHECK FOR TORQUE CONVERTER FAULT OR TRANSMISSION FLUID PRESSURE SOIENOID. CODE.AND CHECK TRANSMISSION FLUID LEVEL

Check your oil pressure switch located next to the oil filter. Sounds like that will need to be replaced.

It sounds like you are low on R134 freon, you might have a leak or maybe it just needs a recharge.