Intermitant AC and its HOT!!
Thread Starter
|
New User
Joined: Jul 2011
Posts: 23
Likes: 0
Intermitant AC and its HOT!!
Ok guys my AC is not working all of the time. When it works it works great, 39 degrees out of the vents. AC clutch doesnt always kick in. The pressures seem good and Im sure that I am not low on coolant. I think that this is an electrical problem. I have tried wiggeling wires and connections but no noticable changes. Any ideas?
Post Fiend
Joined: May 2009
Posts: 5,470
Likes: 3
From: Pea Ridge, AR
Have you checked the gap of the clutch? When its blowing warm try tapping the clutch to see if it engages, could just be worn clutch, I personally removed my shims to close the gap, check out this thread Clutch Air Gap should be similar situation if your clutch is not spinning
Thread Starter
|
New User
Joined: Jul 2011
Posts: 23
Likes: 0
Ok I did some more checking and if I hotwire the clutch it engages right away. I have power to the low pressure switch and through it, I bypassed it just to be sure but no change. The high pressure switch has four termanals and I do have power on one of them. Any ideas? How can I check the high pressure switch?
also in the first post I said "coolant" when I shoud have said refregerant
also in the first post I said "coolant" when I shoud have said refregerant
Post Fiend
Joined: Sep 2003
Posts: 6,096
Likes: 26
From: Mesa AZ
Did you check the air gap like Alan suggested in post #3? Hotwiring the clutch would likely provide enough juice to the electromagnet so it engages. Then it will get hot after a while and let go again. Your symptoms sound like an air gap issue to me.
You may not have noticed but Alan's post has a link to another thread where this issue is discussed in more detail. (just pointing this out in case you missed the link...)
You may not have noticed but Alan's post has a link to another thread where this issue is discussed in more detail. (just pointing this out in case you missed the link...)
Thread Starter
|
New User
Joined: Jul 2011
Posts: 23
Likes: 0
Yes I have checked the air gap and it is good, sorry I forgot to mention that. I also tried tapping on it and it will not engage. I am not getting battery voltage to the ac compressor. The problem is not intermitant anymore-- it doesnt work at all.
--Sorry I forgot to mention that
--Sorry I forgot to mention that
Hotshot
Joined: Jan 2004
Posts: 19,762
Likes: 1,079
From: St Louis
You have a PCM-controlled clutch. The series circuit of the cycling and high pressure containment switches serve as an input to the PCM. The PCM, unless operating parameters preclude it, issues a command to energize the A/C clutch relay which, when energized, switches power from CJB F10 to the clutch coil.
The containment switch should be normally closed between the RD/YE and the TN/LG wires.
Check the fuse. See if the relay energizes, etc...
The containment switch should be normally closed between the RD/YE and the TN/LG wires.
Check the fuse. See if the relay energizes, etc...
Thread
Thread Starter
Forum
Replies
Last Post
bobo1950
1983 - 2012 Ranger & B-Series
1
Aug 20, 2010 09:49 AM
