High coolant temp...?
Post Fiend
Joined: Mar 2009
Posts: 11,798
Likes: 14
From: Mt. Shasta California
Get one with a gauge, if freon is still in there you can recharge it. Lot's of info in here but do a search.
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Senior User
Joined: Jan 2011
Posts: 125
Likes: 0
From: Fairbury IL
Update:
I did not find the can of R-134, BUT, I did find the removable gauge attachment that came with it.
Started the truck, cranked the a/c on, cycled it a few times, and left it on for a few minutes. Popped the gauge on the low-side, and was sitting pretty close to 40 PSI - which according to the gauge - is acceptable.
Any other ideas?
I did not find the can of R-134, BUT, I did find the removable gauge attachment that came with it.
Started the truck, cranked the a/c on, cycled it a few times, and left it on for a few minutes. Popped the gauge on the low-side, and was sitting pretty close to 40 PSI - which according to the gauge - is acceptable.
Any other ideas?
Hotshot
Joined: Jul 2005
Posts: 13,834
Likes: 26
From: Middle Tn.
Pressures are dependant on abient temps. and humidity. There are charts for the proper charging of an AC system if your not evacuating and charging from scratch by volume. Having a hi and low side gauge also lets you know if there's a blockage such as in the orifice tube.
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Senior User
Joined: Jan 2011
Posts: 125
Likes: 0
From: Fairbury IL
Was hoping it was something simple I could tackle with tools I already have - unfortunately a full gauge set is not one of those things, so for right now, I'm trying to rule out items that do not require a gauge set.
Air Gap on the compressor is about .035. Spec calls for ~.020. Is this possibly the issue? Increased RPM and the thing 'releases?'
Hard to troubleshoot with only two hands. Am going to have wife bring the revs up while I'm watching the a/c compressor to see if it is actually dropping out or not. Truck is too loud to hear if the compressor is dropping out.
A quick recap of what I know so far about the a/c system.
Works AWESOME at idle. Both the Front and Rear air blow very cold.
Seems like anything above 1000rpm and you can tell pretty quick that the air conditioner is no longer uhhh... 'conditioning.'
Only had a low-side gauge, and that reads around 40psi at idle with the a/c blowing cold.
Air-gap is .035.
Thanks for the help and suggestion on gauges. Have got calls out to a few friends to see if they have full gauge sets.
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Senior User
Joined: Jan 2011
Posts: 125
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From: Fairbury IL
Wierd. Wanted to make sure plugs were all tight. Started with the low pressure switch. Unplugged, blew a little compressed air in the female plug, pushed it back together and went for a drive. Would you believe that the a/c frickin blew cold from that point forward?!
Kind of a crappy place for the plug/sensor... Right below the metal lines that sweat bad.
All is well in the world again. Was 94 outside here today!
Kind of a crappy place for the plug/sensor... Right below the metal lines that sweat bad.
All is well in the world again. Was 94 outside here today!
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Senior User
Joined: Jan 2011
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From: Fairbury IL
If by 'warm fuzzy feeling' you mean 'happy that my wife wont have a stroke' feeling - then yes... I got a warm fuzzy! haha
Hotshot
Joined: Jul 2005
Posts: 13,834
Likes: 26
From: Middle Tn.
Congrats on the find. Doesn't it make you feel good when you fix something by accident. Good thing you didn't try to add more freon. Now you know why you need gauges. More freon could have locked up your AC compressor for good.
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Senior User
Joined: Jan 2011
Posts: 125
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From: Fairbury IL
Just wanted to give a laaaaaate bump with an update 6 months post all the work.
This Excursion ROCKS. Have had ZERO issues since June (the a/c thing - apparently on the 03 Excursions, writing a fresh tune overwrites something and the a/c compressor acts funny for 15-20 miles.)
This Excursion ROCKS. Have had ZERO issues since June (the a/c thing - apparently on the 03 Excursions, writing a fresh tune overwrites something and the a/c compressor acts funny for 15-20 miles.)
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