The cars air conditioner, will blow fairly cold air, upon start. But while driving, it blows warm. Coming to a stop, it will cool off some.
Jul 14, 2018 at 6:44 AM
A/C blows warm air when driving
CADZAN
- MEMBER
- 1 POST
Hi and thanks for using 2CarPros.com.
This could be the result of low Freon in the system, a partially plugged system, a blend air door in the vehicle not functioning properly.
Since it never gets more than "cool" before driving, I would start by checking both the high and low side compressor pressures. Here is a link that describes how the system is properly recharged and discusses pressures from both sides of the compressor:
https://www.2carpros.com/articles/re-charge-an-air-conditioner-system
Once you determine the pressures, let me know the following. What both the low and high side pressures are and I will need to know the outside temperature when tested. Ambient temperatures (outside temperature) will play a big role in what the pressure should be under different conditions.
Do this first and let me know what you find.
Thanks,
Joe
This could be the result of low Freon in the system, a partially plugged system, a blend air door in the vehicle not functioning properly.
Since it never gets more than "cool" before driving, I would start by checking both the high and low side compressor pressures. Here is a link that describes how the system is properly recharged and discusses pressures from both sides of the compressor:
https://www.2carpros.com/articles/re-charge-an-air-conditioner-system
Once you determine the pressures, let me know the following. What both the low and high side pressures are and I will need to know the outside temperature when tested. Ambient temperatures (outside temperature) will play a big role in what the pressure should be under different conditions.
Do this first and let me know what you find.
Thanks,
Joe
Jul 15, 2018 at 1:28 PM
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