1994 Ranger A/C pressure switch? - Ford Forums - Mustang Forum, Ford Trucks, Ford Focus and Ford Cars
Ford Ranger Forum Forum for discussion of the Ford Ranger.

LinkBack Thread Tools Display Modes
post #1 of 2 (permalink) Old 07-01-07, 05:49 PM Thread Starter
Registered User
Join Date: Jul 2007
Posts: 1
1994 Ranger A/C pressure switch?

I have a 1994 4.0 Ranger. The A/C had always been okay (not cold) until about 18 months ago. I tried to fill it with new coolant and noticed something unusual. With a pressure gauge connected and the a/c running the compressor will run and increase the pressure in the system to the red line on my gauge (unsafe), but then it will immediately click off and the pressure will drop to zero. It seems that the compressor is working fine, it just can't maintain the proper pressure, is there a pressure switch that controls this? Please help; I'm in Arizona and need some A/C.
Marqoid is offline  
Sponsored Links
post #2 of 2 (permalink) Old 07-02-07, 03:09 PM
Plum Krazy XLT
Shadow's Avatar
Join Date: Jun 2003
Location: Ohio, USA
Age: 57
Posts: 46
Re: 1994 Ranger A/C pressure switch?

Sounds more like the expansion valve is clogged. That would allow the compressor to build to maximum pressure without the system delivering cool air. If the pressure is dropping to 0, check it thoroughly for leaks on the high and low pressure sides, completely evacuate the system (this will dictate paying someone or renting some equipment if you know how to do it), and be sure it's using the right refridgerant.

The Shadow
Shadow is offline  
Sponsored Links

  Ford Forums - Mustang Forum, Ford Trucks, Ford Focus and Ford Cars > Ford Trucks | Utes | Vans |SUVs | Crossovers > Ford Ranger Forum
Gear in this thread - Powered by O'Reilly Auto Parts

Currently Active Users Viewing This Thread: 1 (0 members and 1 guests)
Thread Tools
Show Printable Version Show Printable Version
Email this Page Email this Page
Display Modes
Linear Mode Linear Mode

Posting Rules  
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are On
Pingbacks are On
Refbacks are On

For the best viewing experience please update your browser to Google Chrome