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Registered
2004 Deville
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41 Posts
Discussion Starter #1
Hi All!

Hope you are all experiencing a great day! Over 60* here in N.Y for the first time in a long time!

My DeVille DHS is a 2004, for future reference.

I attempted to remedy my A/C=warm air problem today........not successful.
As soon as I attached the pressure gauge/refill canister, the gauge went to MAX acceptable pressure: right on the green/red line.

Additionally, I did NOT here the compressor kick on/off.

Nosy and curious, I opened the fuse box and did a little snooping for A/C related fuses etc. The 15 amp fuse looks fine, but the CLU
for the A/C was very, VERY hot! Actually too hot to touch for more than a second. This is in location #32 and looks nothing like a fuse.

Can you tell me exactly what this is/does? How can I have it checked? or should I just replace it?
 

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Super Moderator
White Diamond '03 DHS (with DTS floor shift)
Joined
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86,781 Posts
Those gauges that come on the can are next to useless. You really need an A/C manifold set with a high and low gauge.
Start by pulling the DTC's. If you are low on refrigerant, you should have a low refrigerant code as well as a SERVICE A/C message.
 

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Master of the Dark Art of Diagnostics
2003 DHS - two-2002 DHS, 2003 SLS, 1995 Sedan DeVille, 1989 Coupe DeVille
Joined
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19,261 Posts
Hi All!

Hope you are all experiencing a great day! Over 60* here in N.Y for the first time in a long time!

My DeVille DHS is a 2004, for future reference.

I attempted to remedy my A/C=warm air problem today........not successful.
As soon as I attached the pressure gauge/refill canister, the gauge went to MAX acceptable pressure: right on the green/red line.

Additionally, I did NOT here the compressor kick on/off.

Nosy and curious, I opened the fuse box and did a little snooping for A/C related fuses etc. The 15 amp fuse looks fine, but the CLU
for the A/C was very, VERY hot! Actually too hot to touch for more than a second. This is in location #32 and looks nothing like a fuse.

Can you tell me exactly what this is/does? How can I have it checked? or should I just replace it?
========================
As soon as I attached the pressure gauge/refill canister,
the gauge went to MAX acceptable pressure: right on the green/red line.

like Ranger already said -
those single mickeymouse gauges are useless -
ALSO - you are only looking at STATIC pressure - not WORKING pressure -

the CLU for the A/C was very, VERY hot!
Actually too hot to touch for more than a second.
This is in location #32 and looks nothing like a fuse.

position #32 is the relay for the AC compressor clutch -

it may be stuck/defective -
give it a little tap - or just replace it -
 

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Registered
2004 Deville
Joined
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41 Posts
Discussion Starter #4
Well, I replaced the compressor relay, and no change. I didn't hear or feel the compressor engage, so I think it's time to take it to a shop and learn, of course that I can't afford to get it fixed.
Can you suggest any other things that I can check myself with no special tools?
Thanks for helpi'n!
 

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Master of the Dark Art of Diagnostics
2003 DHS - two-2002 DHS, 2003 SLS, 1995 Sedan DeVille, 1989 Coupe DeVille
Joined
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19,261 Posts
Well, I replaced the compressor relay, and no change. I didn't hear or feel the compressor engage, so I think it's time to take it to a shop and learn, of course that I can't afford to get it fixed.
Can you suggest any other things that I can check myself with no special tools?
Thanks for helpi'n!
================================
did you check for codes?
 

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Registered
86 Bronco, 74 Ford LTD,1999 Deville, 1977 Coupe Deville
Joined
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305 Posts
I don't see CLU on the acronym list. What is it? I don't have a CLU! Heh...Heh


Anything newer than a glass Buss fuse is higher learning for me.:)
 

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Master of the Dark Art of Diagnostics
2003 DHS - two-2002 DHS, 2003 SLS, 1995 Sedan DeVille, 1989 Coupe DeVille
Joined
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19,261 Posts
I don't see CLU on the acronym list. What is it? I don't have a CLU! Heh...Heh


Anything newer than a glass Buss fuse is higher learning for me.:)
====================================

this - from post #3 -

the CLU for the A/C was very, VERY hot!
Actually too hot to touch for more than a second.
This is in location #32 and looks nothing like a fuse.

position #32 is the relay for the AC compressor clutch -
 

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Super Moderator
White Diamond '03 DHS (with DTS floor shift)
Joined
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86,781 Posts
Well, I replaced the compressor relay, and no change. I didn't hear or feel the compressor engage,
If the compressor will not engage it is likely low on refrigerant. The PCM disables the compressor to prevent damage when low refrigerant is detected. The code must be cleared in order to enable it in order to add refrigerant.
 
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