Medium and Heavy Trucks

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Related Medium and Heavy Trucks Questions
Off and on power to AC compressor. 2011 freightliner
Off and on power to AC compressor JA: The car Mechanic will know what to do about your ac compressor. Do you have any other details that could be helpful? Customer: 2011 freightliner cascadia dd13 JA:… read more
Wayne
Wayne
Journeyman
Vocational, Technical or Trade Scho
5,115 satisfied customers
Have a 2006 peterbuilt and ac will not cool what can i check
have a 2006 peterbuilt and ac will not cool what can i check ,it is fully charged and have had filter tube changed and dryer also… read more
Nich1019
Nich1019
Cummins/Caterpillar Technician
Vocational, Technical or Trade School
2,018 satisfied customers
A/C kw900 ac evaporator freezes up. Just changed it and the
A/C kw900 ac evaporator freezes up . Just changed it and the expansion valve. New clutch and compressor . Don't see any leaks . Could it be my condenser? I do see that it's bent… read more
Wayne
Wayne
Journeyman
Vocational, Technical or Trade Scho
5,115 satisfied customers
2017 Freightliner M2 106, no A/C Compressor runs but doesn't
2017 Freightliner M2 106, no A/C Compressor runs but doesn't cycle, low side fluxes between 107 and 111, high side at 175. The low side tubing isn't cool at all, high side is hot. Engine shut off the … read more
Wayne
Wayne
Journeyman
Vocational, Technical or Trade Scho
5,115 satisfied customers
I have a 2001 international 4900 with an a/c problem. the
I have a 2001 international 4900 with an a/c problem. the low and high side pressures are staying the same at around 120psi while idling, rev the engine to 1800 or so and the low side will come down t… read more
Mike Mcmillan
Mike Mcmillan
Triage Tech/Shop Foreman
Associates
562 satisfied customers
Kenworth T660 ac work ok on idle when on road high rpm it
Kenworth T660 ac work ok on idle when on road high rpm it will not work . So I out truck kn high rpm and found low side line freezing near evaporator and expansion valve the thick line coming from ac … read more
Andy
Andy
truck /coach technician
Vocational, Technical or Trade School
214 satisfied customers
We have a 1999 frht classic with a 12.7 detroit in it. We
We have a 1999 frht classic with a 12.7 detroit in it. We have been having issue with blowing the high pressure discharge hose on the A/C compressor. Everytime it happens, we have to replace the Compr… read more
Expert
Expert
10,508 satisfied customers
We have a 2005 freightliner M2 in the shop and we have been
HI we have a 2005 freightliner M2 in the shop and we have been fighting the ac system for the past two days now. This truck has an evaporator probe in the evaporator compartment and every time we take… read more
Jeremy
Jeremy
Certified Truck/Bus Technician
Associate Degree
2,756 satisfied customers
Flushed system again, replaced dryer receiver and expansion
Flushed system again, replaced dryer receiver and expansion valve. No other restrictions. Now the low side goes up to about 70 and the high side will just keep going up. When turned off the low side c… read more
Daniel Wilson
Daniel Wilson
Auto Mechanics 1&2/diesel mech
6,062 satisfied customers
I have 2005 frieghtliner m2. AC not working, when i remove
hi i have 2005 frieghtliner m2. AC not working, when i remove the evaporator discharge temp sensor and worm it up with my hand ac works but as soon as i install it back in then stops working. new expa… read more
Expert
Expert
10,508 satisfied customers
I have a Freightliner Columbia. Vacuumed changed air dryer
I have a Freightliner Columbia.Vacuumed changed air dryer and charged ac to manufacturer specifications of 3.75lbs of Freon it has a new compressor that I put in. The compressor keeps cycling on and o… read more
Expert
Expert
10,508 satisfied customers
Peterbilt387, yr 2007. air conditioner problems. air vent is
peterbilt387, yr 2007. air conditioner problems. air vent is not cool as it should. evaporator coil freeze, compressor not recycling… read more
Andy
Andy
truck /coach technician
Vocational, Technical or Trade School
214 satisfied customers
2010 Mack CHU with MP8. A/C runs at 60-70lbs even with low
2010 Mack CHU with MP8. A/C runs at 60-70lbs even with low freon. The A/C head pressure will go up to 150lbs, but as soon as the truck purges air from the air dryer, I lose all head pressure. It makes… read more
Daniel Wilson
Daniel Wilson
Auto Mechanics 1&2/diesel mech
6,062 satisfied customers
Gentlemen, I could really use an A/C expert here. I have a
Gentlemen, I could really use an A/C expert here. I have a KW T800b VIN 1XKDD4OX33R968950 09/2014 Cummins ISX ESN 60812484 This Truck has already been to two or three other shops before I got it. It h… read more
spankyjr1
spankyjr1
Retired
Vocational, Technical or Trade Scho
420 satisfied customers
I am working on a 2007 International 9900IX with a Cummins
I am working on a 2007 International 9900IX with a Cummins ISX. The A/C compressor will cycle on for 3 or 4 seconds then cut off. I have little to no experience on this brand of truck and this style o… read more
Wayne
Wayne
Journeyman
Vocational, Technical or Trade Scho
5,115 satisfied customers
I have an 2008 international pro star with ac problems... Everything
I have an 2008 international pro star with ac problems... Everything has been replaced at least once by my dealer. AC works in the shop, get out the door, it blows cool/warm air... Then I get a horn s… read more
Andy
Andy
truck /coach technician
Vocational, Technical or Trade School
214 satisfied customers
I have a VOLVO 1999 with a cummins engine N-14, I always
Hello I have a VOLVO 1999 with a cummins engine N-14, I always had problems with the AC not working and cooling properly... I replace the AC Dryer, Ac Compressor, Expansion Valve, I tested for leaks a… read more
Daniel Wilson
Daniel Wilson
Auto Mechanics 1&2/diesel mech
6,062 satisfied customers
Freightliner columbia: I am working on a freightliner columbis,the
I am working on a freightliner columbis,the cold line from the sleeper A/C to the compressor is freezing up and I am not getting freon circulating through the cab evaporator. I have individually flush… read more
diesel-tech
diesel-tech
Owner of landrys truck repair llc
136 satisfied customers
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Meet the Experts:

Daniel Wilson

Daniel Wilson

6,062 satisfied customers

Owner at DJ Wilson

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Wayne

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worked on, Gmc, Macks, Freight liner,Mercedes Benz,,Ford, sterling

Jeremy

Jeremy

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ASE Med/HD Truck Technician, NATEF Diesel Engines and Electrical/Electronics Technician, Network Engineer specializing in CAN faults, Aftertertreatment, and vehicle communications

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cumminsdr

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All types of Cummins applications

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Chris (aka-Moose)

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Disclaimer: Information in questions, answers, and other posts on this site ("Posts") comes from individual users, not JustAnswer; JustAnswer is not responsible for Posts. Posts are for general information, are not intended to substitute for informed professional advice (medical, legal, veterinary, financial, etc.), or to establish a professional-client relationship. The site and services are provided "as is" with no warranty or representations by JustAnswer regarding the qualifications of Experts. To see what credentials have been verified by a third-party service, please click on the "Verified" symbol in some Experts' profiles. JustAnswer is not intended or designed for EMERGENCY questions which should be directed immediately by telephone or in-person to qualified professionals.

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