Go Back   Ford Truck Enthusiasts Forums > Older, Classic & Antique Trucks > 1987 - 1996 F150 & Larger F-Series Trucks
Sign in using an external account
Register Forgot Password?


1987 - 1996 F150 & Larger F-Series Trucks 1987 - 1996 Ford F-150, F-250, F-350 and larger pickups - including the 1997 heavy-duty F250/F350+ trucks

Welcome to Ford-Trucks Forums!
Welcome to Ford-Trucks.com.

You are currently viewing our forums as a guest, which gives you limited access to view most discussions and access our other features. By joining our community you will have access to post topics, communicate privately with other members (PM), respond to polls, upload content and access many other special features. Registration is fast, simple and absolutely free so please, join the Ford-Trucks Forums community today!





 
Reply
 
 
 
 
LinkBack Thread Tools Search this Thread
  #1  
Old 03-08-2007, 12:37 PM
ForTiLLiaN ForTiLLiaN is offline
Freshman User
 
Join Date: Feb 2003
Location: Fort Worth, TX
Posts: 42
ForTiLLiaN is starting off with a positive reputation.
AC Compressor install help

My A/C compressor gave out on my 94 F150 5.0 EFI.. I got a brand new one, with also the Dryer, and some kind of small filter. Ive got the dryer installed, and the compressor, but i was also givin a small amound of ester oil, im not sure how much to use and where. And also, i dont know where to replace this filter at. The filter is narror and about 3 in. long. Any help with where to replace this filter and how much of this oil to use would be great.

Thanks
Reply With Quote
  #2  
Old 03-08-2007, 02:19 PM
ForTiLLiaN ForTiLLiaN is offline
Freshman User
 
Join Date: Feb 2003
Location: Fort Worth, TX
Posts: 42
ForTiLLiaN is starting off with a positive reputation.
Ok, so this is where im at. I found out to put around 5oz. into the compressor, and about 2oz. into the Dryer. I have it all installed. No when refilling with R134a. I turned the A/C to max, and connected to the low line and started my fill. Halfway through the first can i was able to fill to 45psi, (max fill pressure), and the compressor would not enguage. So i jumped it. I let it run for a minute and then started to fill more. With the compressor on, my pressure guage reads 0psi, but when i disconnect the my jumper to disenguage the compressor it will read right at 45psi. Right now the compressor is cycleing. With the guage connected to low side it will rise to 45psi, the compressor kicks on, the pressure then will drop to 20psi(lowest operating pressure) here the compressor kicks off. Any thoughts on this?
Reply With Quote
  #3  
Old 03-08-2007, 02:47 PM
ForTiLLiaN ForTiLLiaN is offline
Freshman User
 
Join Date: Feb 2003
Location: Fort Worth, TX
Posts: 42
ForTiLLiaN is starting off with a positive reputation.
My question is will the pressure be HIGH on the low side when the compressor kicks off? and in the safe range when the compressor kicks on? Should i actually jump the compressor and then charge till it reads correct pressure?
Reply With Quote
  #4  
Old 03-08-2007, 02:54 PM
F150xlt F150xlt is offline
Posting Guru
 
Join Date: Jan 2002
Location: Baltimore
Posts: 1,299
F150xlt has a very good reputation on FTE.F150xlt has a very good reputation on FTE.F150xlt has a very good reputation on FTE.
The quick cycling is normal when the charge is low.
You can keep the jumper on until you fully recharge the system.
Then take the jumper off.

I hope you pulled a vacuum before you started the recharge.

Keep an eye on the high side pressure. It varies from system to system but it should not exceed the 300 psi range. If it does, stop because you have a blockage some where.

The little screen you purchased is called the orifice tube. It controls the refrigerant flow in the system. There is a u shaped tube with a spring lock connection at the evaporator housing. the orifice tube is inside the metal tube. There is a special tool that hooks on to the orifice tube so you can pull it out. You can also use a long drywall screw. It will destroy the old orifice tube but it's one way to get it out if you don't have the proper tool. That screen can get clogged by small particles so you should have replaced it or cleaned it.

Last edited by F150xlt; 03-08-2007 at 02:59 PM.
Reply With Quote
  #5  
Old 03-08-2007, 03:02 PM
ScreaminZ ScreaminZ is offline
Freshman User
 
Join Date: May 2006
Location: Crowley, TX
Posts: 46
ScreaminZ is starting off with a positive reputation.
When the compressor is off, the pressure will be the same throughout the system. Once the compressor starts running is when you get your pressure differential. High side pressure goes high, Low side goes low. The pressure you want to watch is the Low pressure side while the compressor is running. That is your fill pressure.

There is an A/C forum on this site. I would suggest you go take a look at it. All of this type of stuff has been covered there many times.
Reply With Quote
  #6  
Old 03-08-2007, 03:10 PM
ubereal2's Avatar
ubereal2 ubereal2 is offline
Unk Bob
 
Join Date: Dec 2006
Location: Durham NC
Posts: 4,137
ubereal2 is gaining momentum as a positive member of FTE.ubereal2 is gaining momentum as a positive member of FTE.
Bob Wheeldon
Red face

The small screen is an "Oriphis tube" it is in the tube that runs from you're reciever/drier into the tube that goes to the e-coil (evaporator coil) you'll need a tool like a fuel line disconnect tool to undo this. They can really be a pain in the *** to get out. It catch's debri in the system.

If it isn't replaced the warranty usually is voided on the compressor.
Reply With Quote
Old 03-08-2007, 03:10 PM
 
 
 
Reply

Go Back   Ford Truck Enthusiasts Forums > Older, Classic & Antique Trucks > 1987 - 1996 F150 & Larger F-Series Trucks

Thread Tools Search this Thread
Search this Thread:

Advanced Search

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 On
Trackbacks are On
Pingbacks are On
Refbacks are On

Forum Jump

Similar Threads
Thread Thread Starter Forum Replies Last Post
Replacing Air Conditioner compressor ? Tim Young 1994.5 - 1997 7.3L Power Stroke Diesel 4 07-08-2014 09:01 AM
Repairing my A/C system. A couple quick(?) questions Vic93 Cooling, Heating, Ventilation & A/C 3 08-01-2013 05:55 PM
AC flush? F-250 6.0L Togglebolt Super Duty & Heavy Duty 0 02-21-2013 03:03 PM
Steps to fix A/C firebug 1994.5 - 1997 7.3L Power Stroke Diesel 2 07-23-2011 01:53 AM
New compressor and dryer Tim Young Cooling, Heating, Ventilation & A/C 5 09-09-2006 01:18 AM



All times are GMT -5. The time now is 02:34 PM.


Powered by vBulletin® Version 3.8.7 AC1
Copyright ©2000 - 2014, Jelsoft Enterprises Ltd.
Advertising - Terms of Use - Privacy Statement - Jobs
This forum is owned and operated by Internet Brands, Inc., a Delaware corporation. It is not authorized or endorsed by the Ford Motor Company and is not affiliated with the Ford Motor Company or its related companies in any way. FordŽ is a registered trademark of the Ford Motor Company.

vbulletin Admin Backup