AC Pressure switch replacement
Thread Starter
|
New User
Joined: Jul 2000
Posts: 19
Likes: 0
AC Pressure switch replacement
I figure a new thread was in order since I figured out the problem. It seems as if the pressure switch on my AC system (89 bronco, 5.0L) is bad. I can jump the plug and the compressor will cycle and the AC will blow cold in the cab, so I figure I have a good charge, and just that the switch is bad. Can I unscrew that switch from the drier without having to remove all the refrigerant? Or is it isolated somehow from the system? If so, what am I looking at as far as cost to have the system evacuated of the R12, switch replaced, then having the R12 replaced? Thanks for the help.
Senior User
Joined: Jul 2001
Posts: 237
Likes: 0
From: Clearwater USA
AC Pressure switch replacement
Yes you can remove it without it losing a charge there is a valve behind it.
Rick
86 302 EFI, bored 60 over, AOD,
Headman Headers, Flowmaster 40 series,
2 inch dual exhaust, MSD ignition
Rick
86 302 EFI, bored 60 over, AOD,
Headman Headers, Flowmaster 40 series,
2 inch dual exhaust, MSD ignition
Thread Starter
|
New User
Joined: Jul 2000
Posts: 19
Likes: 0
AC Pressure switch replacement
Well I tried to remove it and got a hissing noise along with some liquid coming out of there. Needless to say I quickly closed it back up. I guess that valve is bad or I didnt do something right. I put a wrench on the nylon part of the switch that appears designed to take a wrench (dont know a better way to describe that), the part closest to the drier canister. Thoughts?? 
Senior User
Joined: Jul 2001
Posts: 237
Likes: 0
From: Clearwater USA
AC Pressure switch replacement
It is just like a tire valve it is going to leak a tiny bit but that should be all.
Rick
86 302 EFI, bored 60 over, AOD,
Headman Headers, Flowmaster 40 series,
2 inch dual exhaust, MSD ignition
Rick
86 302 EFI, bored 60 over, AOD,
Headman Headers, Flowmaster 40 series,
2 inch dual exhaust, MSD ignition
Thread Starter
|
New User
Joined: Jul 2000
Posts: 19
Likes: 0
AC Pressure switch replacement
So if the valve continues to leak after I remove the switch, would I be OK if I just took the old one off and put the new one on real quick to stop the leaking? I doubt the small amount I'd lose would have a catastrophic effect. Lastly, is that valve replacable so the next time I have my system discharged I can fix its leak? Thanks for all the help. 
Thread
Thread Starter
Forum
Replies
Last Post
Geohill279
Cooling, Heating, Ventilation & A/C
2
Nov 5, 2016 11:01 AM
scottrph
Cooling, Heating, Ventilation & A/C
5
Jul 20, 2005 04:23 PM
