High pressure switch?
Thread Starter
|
New User
Joined: Dec 2010
Posts: 3
Likes: 0
High pressure switch?
I HAVE A 2003 F-250 7.3, A/C is warm after a few minutes,leave it off and turn back on it is cool agin for a few minute.Cutch gap is correct and system has ben evacuated and recharge,I replace the high pressure switch and it worked for a day if i jump the the high pressure switch(i know it is risky)the clutch kicks in .Is there a spec for the switch ot could there actually be a restriction,I have never gotten and real high readings
Hotshot
Joined: Jan 2004
Posts: 19,760
Likes: 1,079
From: St Louis
Time for gauge readings.
The HP switch should open around 450 psi and should close back again around 250-275 psi. You need to determine what the actual pressures as they will give a good indication of what's wrong.
The HP switch should open around 450 psi and should close back again around 250-275 psi. You need to determine what the actual pressures as they will give a good indication of what's wrong.
Thread Starter
|
New User
Joined: Dec 2010
Posts: 3
Likes: 0
with the compressor engaged it runs 124 highside and pegs the Matco gauges on the low side past 250. With the system off it is equal at about 124. The clutch will kick off after a few minutes.My friend is a John deere mechanic thinks it is the compressor.
Thread Starter
|
New User
Joined: Dec 2010
Posts: 3
Likes: 0
The readings are backwards but that is what they are reading and he has not convinced me the compressor is bad. I think thers are two problems one maybe the clutch and possibly a blockage,I have put the recovery machine on it twice and the charge is correct.
Thread
Thread Starter
Forum
Replies
Last Post
warren561
1987 - 1996 F150 & Larger F-Series Trucks
5
Apr 2, 2013 04:31 PM
