My air conditioner is barely blowing out air.

SOURCE: My air conditioner is not working on my 2002 BMW X-5. The air is cool it just won't blow out.

If there is air moving through the vents most likely the final stage transistor(blower resistor) has failed. It controls blower speed from a signal from the ihka (a/c control panel). the final stage receives the signal from the ihka of the drivers preference blower speed. the final stage pwm (pulse width modulates) the blower motor. which means it turns it off and on very quickly to speed up or slow down the blower motor speed. It isn't the easiest part to replace. Usually at a dealership i would expect to pay somewhere around $600 (including diagnosis)but don't hold me to it. bmw dealerships stand behind their repairs and usually include a warranty with the part of 2 years unlimited mileage.

SOURCE: air conditioner problem with 2005 chevy 1500 silverado

I have the same problem exactly, if i turn off the ignition and then turn it back on it begins blowing cold air again. I would like to know what the problen is as it sounds like it is not unique to just my vehicle.

AV Vrgs

• 29 Answers
• Posted on Aug 09, 2010

SOURCE: Air conditioner has stopped blowing cold air and

car air conditioner blowing hot air , this kind of problem often cause by a refrigerant leak or clogged condenser.

SOURCE: 2004 acura mdx. turn

I have the same problem with my MDX. I live in the Bahamas and there are no Acura dealerships here. I had two mechanics look at it and they could not fix the problem, so I took matters into my own hands. After checking for blown fuses I did a self diagnosis on the climate control panel, I got a DTC that related to a fault in the blower motor circuit. I went through the step by step diagnosis of the circuit and found that the blower motor was faulty. Acura's climate control has a couple sensor that monitor the blower speed, if the sensor do not detect that the blower is running they will not allow the compressor to run, in essence the rear blower will run but the system will not cool. You may need to replace the blower. The quickest way to check if the blower is faulty is to pull the connector off the blower, turn the iignition on and the ac system on, You should get battery voltage on the connector. If you have battery voltage at the connector and the fan doesn't run the youv'e solved the problem. If you don't have voltage at the connector with the ignition switch on and the ac system on you problem could be the front blower power transistor. If you need diagrams and how to retrieve self diagnostic DTC contact me: [email protected]