AC Will not Blow cold air

SSHEFF

MEMBER
2007 NISSAN MURANO
3.5L
V6
AWD
AUTOMATIC
170,000 MILES

I have had my AC compressor changed three times, and the Freon is full. The fan system is working but only blows hot air. My mechanic says there is not any power going to the compressor, but is not sure if it is an issue with the internal computer or the AC relay. He also is not sure where the relay would be. Any help or advice would be welcome.

4 Replies

KEN L

MASTER CERTIFIED MECHANIC
48,505 POSTS

Hello,

It sounds like it could be a fuse or some wiring problem, I have included a wiring diagram so you can test if the compressor is getting power or not, if so then i could be a blend door actuator problem.

Here are some guide to help you troubleshoot the problem.

https://www.2carpros.com/articles/how-to-check-a-car-fuse

and

https://www.2carpros.com/articles/how-to-use-a-test-light-circuit-tester

and

https://www.2carpros.com/articles/replace-blend-door-motor

and

https://www.2carpros.com/articles/car-air-conditioner-not-working-or-is-weak

Please run some tests and get back to us so we can continue helping you.

Best, Ken

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Monday, April 17th, 2017 AT 4:41 PM

JULES52000

MEMBER
1 POST
2006 NISSAN MURANO
6 CYL
AWD
AUTOMATIC
65,000 MILES

If you had you alternator replaced and air stopped working are the two related?

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Wednesday, June 5th, 2019 AT 6:53 PM (Merged)

MHPAUTOS

MECHANIC
31,937 POSTS

Hi there,

There is no direct relationship between the two items expect it sounds like the compressor wiring got disconnected during the repair and not reconnected. If it is connected here is a guide to help you see whats going on.

https://www.2carpros.com/articles/car-air-conditioner-not-working-or-is-weak

Please run down this guide and report back.

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Wednesday, June 5th, 2019 AT 6:53 PM (Merged)

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