AC gauge numbers.
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Fleet Mechanic
Joined: Oct 2025
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If it’s worth noting, I had it running for about 20 minutes and the ac drain line didn’t drop anything. I thought it might be clogged, so went to push a screwdriver in. Went to put my hands around the tube to guide screwdriver and plenty of air is blowing out of the tube, just no water. It’s also not leaking on floorboard.
Nose of truck is downhill.
Nose of truck is downhill.
Last edited by 90project5.0; Jun 6, 2026 at 02:19 PM.
i ain't rite
Joined: Mar 2005
Posts: 65,554
Likes: 5,590
From: Marlboro Mental Hospital.
60 is a tad on the high side, i would expect to see closer to 45 or so. with temp taken with settings on max ac, outside air off, fan on medium setting and idle raised to around 900-1,000 rpm?
spraying the AC condenser with a garden hose should drop vent temps too. if the condenser is dirty or just not doing it's job.
and your fan clutch could be bad too
spraying the AC condenser with a garden hose should drop vent temps too. if the condenser is dirty or just not doing it's job.
and your fan clutch could be bad too
Last edited by tjc transport; Jun 6, 2026 at 02:40 PM.
Thread Starter
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Fleet Mechanic
Joined: Oct 2025
Posts: 1,834
Likes: 399
If it’s worth noting, I had it running for about 20 minutes and the ac drain line didn’t drop anything. I thought it might be clogged, so went to push a screwdriver in. Went to put my hands around the tube to guide screwdriver and plenty of air is blowing out of the tube, just no water. It’s also not leaking on floorboard.
Nose of truck is downhill.
Nose of truck is downhill.
60 is a tad on the high side, i would expect to see closer to 45 or so. with temp taken with settings on max ac, outside air off, fan on medium setting and idle raised to around 900-1,000 rpm?
spraying the AC condenser with a garden hose should drop vent temps too. if the condenser is dirty or just not doing it's job.
and your fan clutch could be bad too
spraying the AC condenser with a garden hose should drop vent temps too. if the condenser is dirty or just not doing it's job.
and your fan clutch could be bad too
Last edited by 90project5.0; Jun 6, 2026 at 03:05 PM.
i ain't rite
Joined: Mar 2005
Posts: 65,554
Likes: 5,590
From: Marlboro Mental Hospital.
60 is still great when it is 90+ outside.
i had 94 degrees air blowing out of the vents of the 2024 Kenworth yesterday.
the refrigerant and nitrogen bottles grew legs and walked off sometime between friday and last september when i last charged a system. and of course the new bottles will not be in until tuesday so i can find the leak and fix it..
i had 94 degrees air blowing out of the vents of the 2024 Kenworth yesterday.
the refrigerant and nitrogen bottles grew legs and walked off sometime between friday and last september when i last charged a system. and of course the new bottles will not be in until tuesday so i can find the leak and fix it..
Thread Starter
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Fleet Mechanic
Joined: Oct 2025
Posts: 1,834
Likes: 399
60 is still great when it is 90+ outside.
i had 94 degrees air blowing out of the vents of the 2024 Kenworth yesterday.
the refrigerant and nitrogen bottles grew legs and walked off sometime between friday and last september when i last charged a system. and of course the new bottles will not be in until tuesday so i can find the leak and fix it..
i had 94 degrees air blowing out of the vents of the 2024 Kenworth yesterday.
the refrigerant and nitrogen bottles grew legs and walked off sometime between friday and last september when i last charged a system. and of course the new bottles will not be in until tuesday so i can find the leak and fix it..
Two cans tells me there’s a leak somewhere. My plan will be this winter to drop the system. New dryer/receiver, condenser from 95, new lines and o-rings
Lead Driver
Joined: Feb 2002
Posts: 7,966
Likes: 595
From: Greater Austin, Texas
You also need to check if your temp cable is adjusted so that the blend door is closing fully.
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Fleet Mechanic
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I’ll double check again, but I adjusted it when I resealed that plastic cover last summer. Thanks!
i ain't rite
Joined: Mar 2005
Posts: 65,554
Likes: 5,590
From: Marlboro Mental Hospital.
you will only see drainage when it is humid out.
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Fleet Mechanic
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Quick update.. today after working I had to run some errands. IR gun came in last night so kicked on the ac and went for a drive. Sweet Jesus! Within a few minutes, immediate difference! At idle, IR gun at vent by right knee was staying around 45-47. As soon as I start driving, down to 36-37. I appreciate all the help everyone!!
83F and 67% humidity and still no ac drainage. Guess as long as it’s not on the floorboards, screw it!
83F and 67% humidity and still no ac drainage. Guess as long as it’s not on the floorboards, screw it!
Last edited by 90project5.0; Yesterday at 06:17 PM.
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