AC problems
Post Fiend
Joined: Feb 2007
Posts: 7,191
Likes: 4
From: Blairsville,Ga
if you have a harbor freight near by you can pick up a decent set of gauges for less than $50.
Always handy to have a set of A/C gauges around,I do my own home HVAC work as well as my vehicles
It is good to get some pointers from experienced people when possible
Always handy to have a set of A/C gauges around,I do my own home HVAC work as well as my vehicles
It is good to get some pointers from experienced people when possible
Cargo Master
Joined: Mar 2006
Posts: 2,502
Likes: 2
From: Bend Oregon
I had the exact thing happen to me, turned out to be debris in the orifice restricting the flow. Best guess is it was a bearing in the compressor letting go.
I ended up ordering the compressor, condenser and dehydrator from Ed, The only reason I replaced the condenser was the fins where pretty bad after almost 300K and it was less than $200, I replaced the dehydrator for pretty much the same reason...300K and it was only $75.
All told I had $480 in parts and I paid a local shop $300 to do the work so for $780 I have for the most part a completely new AC system. As a caviat I have noticed that my tranny temps are down about 20* with the new condenser, must be the improved airflow and it is ice cold in the cab now.
I ended up ordering the compressor, condenser and dehydrator from Ed, The only reason I replaced the condenser was the fins where pretty bad after almost 300K and it was less than $200, I replaced the dehydrator for pretty much the same reason...300K and it was only $75.
All told I had $480 in parts and I paid a local shop $300 to do the work so for $780 I have for the most part a completely new AC system. As a caviat I have noticed that my tranny temps are down about 20* with the new condenser, must be the improved airflow and it is ice cold in the cab now.
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Post Fiend
Joined: Mar 2007
Posts: 26,966
Likes: 50
From: Texas
Sort of an update. Still haven't put any real gauges on it yet. Had kind of a scheduling issue so I won't be able to meet up with Barry till next week sometime. The AC's been blowing nice and cold. Around 45 deg with an outside temp of 98 so I can't complain. It finally kicked back off today at idle in my driveway so I popped the hood and noticed the compressor was not spinning. At least that makes sense I think in regards to the pressure spike. A couple of taps on the clutch with a screwdriver and it started spinning again and the air got cold.
Here's to hoping it's just low on freon and the cheap low pressure gauge that comes with the can isn't smart enough to figure it out. I'll update again next week after I get some better gauges on it.
Here's to hoping it's just low on freon and the cheap low pressure gauge that comes with the can isn't smart enough to figure it out. I'll update again next week after I get some better gauges on it.
Post Fiend
Joined: Feb 2007
Posts: 7,191
Likes: 4
From: Blairsville,Ga
sounds like the clutch air gap may be too wide if tapping it made it kick back in
should be .015 to .027"
http://autorepair.about.com/library/faqs/bl168i.htm
should be .015 to .027"
http://autorepair.about.com/library/faqs/bl168i.htm
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Post Fiend
Joined: Mar 2007
Posts: 26,966
Likes: 50
From: Texas
sounds like the clutch air gap may be too wide if tapping it made it kick back in
should be .015 to .027"
Ford Mustang A/C Compressor Clutch
should be .015 to .027"
Ford Mustang A/C Compressor Clutch
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Cargo Master
Joined: Mar 2006
Posts: 2,502
Likes: 2
From: Bend Oregon
lets hope it's the clutch coil, I was thinking obstruction because of the pressure spike reported but maybe you'll get lucky!!
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Post Fiend
Joined: Mar 2007
Posts: 26,966
Likes: 50
From: Texas
So I went ahead and replaced the clutch this weekend and the AC seems to be working again. Did plenty of stop and go driving this afternoon. Outside temp on my mirror read 103 deg. The thermometer in my vent read between 55 and 60, even sitting at several red lights.
Looks like the clutch fixed my problems.
Post Fiend
Joined: Feb 2008
Posts: 10,977
Likes: 5
From: Lancaster, Pa.
Glad you got it Chris. Did you go with a Ford type clutch and if you don't mind me asking, how much?? And I'm wondering, I'm looking at a sale circular from this Volvo big truck parts house I go too to get odds and ends and they have parts for Navistar engines. I asked the guy at the parts counter would any of these Navistar clutches and parts would work instead of Ford OEM and he couldn't tell me. I told him I had a 7.3 INT. engine and he was still unsure. Reason I'm asking is mine seems to be blowing a little warmer than normal. Was that a 6 grove 5.8 diameter clutch?? It kinda looks like the clutches we have in ours..
Hotshot
Joined: Jan 2002
Posts: 17,988
Likes: 207
From: La La Land
You need an 8-groove clutch to match our serpentine belts.
The compressor is a Ford, not Navistar, so it needs a Ford-type clutch.
They typically go for around $125, and that includes the coil as well, which almost never really needs replacing. The whole thing consists of the pulley, the plate, the coil, and a shim kit with three or four various-thickness shims. Some kits come without shims, so don't throw away your old ones just yet.
Here's some reading material:
http://www.warnerelectric.com/pdf/819-0322_P-1403.pdf
Pop
The compressor is a Ford, not Navistar, so it needs a Ford-type clutch.
They typically go for around $125, and that includes the coil as well, which almost never really needs replacing. The whole thing consists of the pulley, the plate, the coil, and a shim kit with three or four various-thickness shims. Some kits come without shims, so don't throw away your old ones just yet.
Here's some reading material:
http://www.warnerelectric.com/pdf/819-0322_P-1403.pdf
Pop
Post Fiend
Joined: Feb 2008
Posts: 10,977
Likes: 5
From: Lancaster, Pa.
Hello Pop, was just wondering if any of those parts would be compatable. I just looked again at the ad and there is a 8 grove also 5.3 in diameter but like I said, just wondering. Its been hot here, in the 90's and 70% or better humidity so I know things wouldn't be super ice cold but outside temps were about 75 and my inside temps blowing were only 50-55* and that with a produce thermometer put in a vent. Doesn't sound to bad but just didn't feel cold enough. I'll do some reading now, thanks Pop..
