A/C and radiator fan weird issues

1997 FORD MUSTANG
150,000 MILES • 4.6L • V8 • 2WD • MANUAL
Avatar
ZACH RAMIREZ
  • MEMBER
  • 4 POSTS
Hello, i have the car listed above GT. the A/C used to work fine and one day it just stopped blowing cold. A month after that the radiator fan stopped working.
I have

- Replaced Radiator fan (Still didn't work, wired it to a toggle switch inside)

- Replaced AC Compressor with 2006 GT - (Didn't work)

- Replaced ECT sensor

- Replaced Low and High AC ports (Was losing some pressure out of the high so i replaced both)

- Replaced CCRM. (It was old so i decided to just replace anyways)

I don't have any customs tunes or anything.

When i replaced CCRM i vacuumed the system and put Freon in, the AC clutch kicked ON and OFF allowing freon for a couple seconds then turned off and never came back on. PSI at 45, i can keep on pushing it but it will go into the red. (Happened once and had to flush it again).

CCRM allowed radiator fan to kick on only if AC is on MAX. Fan turns on for about a minute then shuts back off (Had to wire it back to the switch)

As you can see i've tried quite a bit of things.. It's very frustrating because i can't seem to find the issue. I live in Texas and it's 105 right now, A/C is my main priority right now lol.

Any help is greatly appreciated!!Thank you!!!
Jul 11, 2020 at 6:56 AM
Advertisement
Avatar
JACOBANDNICKOLAS
  • Experienced Mechanic
  • 110,240 POSTS
Hi,

I attached the wiring schematic for the system below. Have you checked to make sure the grounds are all good? This guide will help you do the testing

https://www.2carpros.com/articles/how-to-check-wiring

Check out the diagrams (Below). Please let us know what happens.

Joe
Jul 12, 2020 at 1:32 PM
Join 2CarPros for free, one of the most advanced car repair communities on the internet. From first-time drivers to seasoned mechanics, everyone is welcome to reply, share details, and get better answers. You can add a temporary image or video first; uploads are limited to 20 MB.
Ask a Free Question
Repair Safety Notice: This information is for general instructional purposes only. Vehicle repair can be dangerous. Verify all information, follow manufacturer service procedures, use proper tools and safety equipment, and consult a qualified repair shop when needed.