Medium and Heavy Trucks

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Related Medium and Heavy Trucks Questions
Won't build air pressure at idle..but will up if I rev up
Won't build air pressure at idle..but will up if I rev up rpm to alittle over 1500..and secondary tank won't hold over 90psi while driving & will drop to 60 psi at idle … read more
james Roberts
james Roberts
Maintenance assistant
Vocational, Technical or Trade School
3 satisfied customers
Put my foot on brake to shift after releasing tractor brake
Put my foot on brake to shift after releasing tractor brake and get low air pressure warning. I've had an issue with brake lights staying on. … read more
Daniel Wilson
Daniel Wilson
Auto Mechanics 1&2/diesel mech
11,194 satisfied customers
I have a 2014 peterbilt here the vin ***************** the
I have a 2014 peterbilt here the vin ***************** the air build up bt won't build air in the second tank I think maybe a valve not sure how troubleshoot this… read more
Daniel Wilson
Daniel Wilson
Auto Mechanics 1&2/diesel mech
11,194 satisfied customers
My secondary air gauge isn't building pressure. 2015
I checked the hoses under the hood and no air is flowing but the primary is filling normal … read more
Daniel Wilson
Daniel Wilson
Auto Mechanics 1&2/diesel mech
11,194 satisfied customers
I have a 2014 Freightliner cascadia, last 6 of vin is
I have a 2014 Freightliner cascadia, last 6 of vin is elfk8665.The air dryer is spitting a bit of oil when purging. I assume the only oil that could enter the air system would be from compressor.Is th… read more
Expert
Expert
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19 cascadia spn523002 code thru my diagnostic link on my
19 cascadia spn523002 code thru my diagnostic link on my peoplenet. Solis yellow motor light on … read more
Daniel Wilson
Daniel Wilson
Auto Mechanics 1&2/diesel mech
11,194 satisfied customers
I have a 2012 freightliner cascadia dd13 with air issues,
I have a 2012 freightliner cascadia dd13 with air issues, primary tank fills secondary tank fills and when you release. The brakes it loses the air pressure to about 50 psi and will not gain any back … read more
Wayne
Wayne
Journeyman
Vocational, Technical or Trade Scho
4,023 satisfied customers
I have a 2014 Freightliner cascadia, last 6 of vin is
I have a 2014 Freightliner cascadia, last 6 of vin is elfk8665.The clutch on the front of the ac compressor won't engage. I am going going to replace it. Is it possible to clamp the lines to it to sav… read more
Expert
Expert
7,397 satisfied customers
I have a 2004 freightliner columbia that started losing air
I have a 2004 freightliner columbia that started losing air pressure driving down the highway.Then once I parked it built up again and now it's losing pressure while I'm sitting.Any suggestions? … read more
Keiphun Sowell
Keiphun Sowell
AutoDiesel Technology
974 satisfied customers
What is wrong with my truck? The message on the dash reads
What is wrong with my truck? The message on the dash reads transmission air pressure low. … read more
AMANDEEP MAHERU
AMANDEEP MAHERU
1 satisfied customers
I have an 2012 freightliner cascadia and I can't switch my
I have an 2012 freightliner cascadia and I can't switch my gears from low to high and it's losing air pressure … read more
AMANDEEP MAHERU
AMANDEEP MAHERU
1 satisfied customers
Eng 0 abs 11 fail 14 spn 810 code. Also secondary air tank
Eng 0 abs 11 fail 14 spn 810 code. Also secondary air tank loses air during drive, and not building over 100 psi. … read more
Daniel Wilson
Daniel Wilson
Auto Mechanics 1&2/diesel mech
11,194 satisfied customers
2016 Freightliner Cascadia DD15. The secondary tank will not
2016 Freightliner Cascadia DD15. The secondary tank will not build up air as fast as the primary. Have replaced the air drier and checked for leaks.… read more
Expert
Expert
7,397 satisfied customers
I recently changed an air compressor on a 2016 freightliner
I recently changed an air compressor on a 2016 freightliner cascadia evolution, the primary nor secondary air tank will build air, bypassed the air dryerbut still no sign of change, directly aired up … read more
Daniel Wilson
Daniel Wilson
Auto Mechanics 1&2/diesel mech
11,194 satisfied customers
I got a freigliner cascadia and I'm looking for 10A circuit
Hi there!..i got a freigliner cascadia and I'm looking for 10A circuit breaker F43 .. … read more
Expert
Expert
7,397 satisfied customers
Im having a problem building air pressure. It will not get
Hey im having a problem building air pressure. It will not get about 30psi. I changed d2 governor and still no pressure. Has s code 6H 164. Can u please help me … read more
Daniel Wilson
Daniel Wilson
Auto Mechanics 1&2/diesel mech
11,194 satisfied customers
I have 2012 Freightliner cascadia with dd15 engine, I got
I have 2012 Freightliner cascadia with dd15 engine, I got huge coolant leak , buy after fix it and add the coolant back truck won't run. When I start the engine at the same time check engine light com… read more
Expert
Expert
7,397 satisfied customers
I have a 2003 International 9200i tandem semi tractor. When
I have a 2003 International 9200i tandem semi tractor. When the truck is running it loses about 5psi per minute secondary air and the air compressor will not load until the secondary air reaches appor… read more
Wayne
Wayne
Journeyman
Vocational, Technical or Trade Scho
4,023 satisfied customers
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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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