2005 AC quit working

[horse sence]

Well ,the AC quit on my 2005 GT the other day ,checked the charge and it is good ,however ,the clutch will not activate.
When i got the car the low speed fan did not work ,turned out to be a burned wire in the block that attaches to the fuse box ,it actually melted the block and fried the low speed fan wire .
I fixed that and it worked great for 2 years now .
Drove it one day and it worked perfect ,got in it the very next day and no AC .
Same thing just happened to my brothers 2005 GT ,AC worked one day and nothing one day later. Its the same as mine ,it is charged but clutch will not activate.

 

[Noobz347]

Check the accumulator pressure switch.

You should be able to jumper the connector going to the accumulator. If the clutch jumps to life, the switch is bad.

 

[horse sence]

Is that at the back of the motor on the fire wall?

 

[horse sence]

It was cheap enough so i bought a new one ...no difference ! I sure hope it isnt in the fuse block again ! Its odd that my brothers is doing the same thing at almost the same time .

 

[Noobz347]

Sometimes I hate trying to do this online... LoL

It appears that on the 2005-2010 that there are two switches:

One is between the accumulator and pump and it should be the low pressure switch.
There's another under the break booster and I understand that one is a [high pressure switch]?

I don't have one that can go outside and refer to anymore.

 

[Noobz347]

Maybe this will help?

 

[Noobz347]

Heya... Check this out:

Ford Workshop Service & Repair Manuals - fordrepair.info - 2005 Mustang Climate Control System- General Information And Diagnostics Climate control system

Ford Workshop Service and Repair Manuals, 2005 Mustang Workshop Manuals Electrical Climate Control System Climate Control System- General Information and Diagnostics DIAGNOSIS AND TESTING Climate Control System

iihs.net

 

[horse sence]

I have one at the firewall just off the accumulator ,and i believe there is one under the top radiator hose . I am going to try to jump the relay to see if it will activate the clutch ,has to be electrical but it beats the hell out of me how both cars could do the same thing just a few days apart !

 

[Noobz347]

I have one at the firewall just off the accumulator ,and i believe there is one under the top radiator hose . I am going to try to jump the relay to see if it will activate the clutch ,has to be electrical but it beats the hell out of me how both cars could do the same thing just a few days apart !

We both know that there are things that are [designed] to fail. This may be one of them?

Look for the label, "Made of pure Chinesium".

 

[horse sence]

I have a 2006 that i am working on ,the AC works ,i am going to pull the other switch and try it ,if that doesnt work i guess its trace wires time

 

[Bullitt95]

We both know that there are things that are [designed] to fail. This may be one of them?

Look for the label, "Made of pure Chinesium".

Back in 2005 these items were more likely to have been made from Canadium, Mexicum, or Americanium.

 

[horse sence]

Hot damn, i mean cold damn ...i mean cold air! It was the high pressure switch ,the one under the top radiator hose . Swapped it with the one from my 2006 and instant air.