Medium and Heavy Trucks

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Related Medium and Heavy Trucks Questions
I have a 2009 Volvo Trailer Head. The air compressor is
Good day. I have a 2009 Volvo Trailer Head. The air compressor is pushing air into the cooling system. Can you advise what might be causing this please. … read more
RichardH416
RichardH416
Resident Tech
Associates
48 satisfied customers
I have a 2005 Freightliner M2. Has a Mercedes MBE 4000
I have a 2005 Freightliner M2. Has a Mercedes MBE 4000 engine. Air pressure will not go up past 70 psi on both gauges. Checked all over the truck can't find any substantial leaks anywhere. Hope the pr… read more
Mike Mcmillan
Mike Mcmillan
Triage Tech/Shop Foreman
Associates
517 satisfied customers
We have another truck issue with the coolant system purging
Hey Mike,We have another truck issue with the coolant system purging out of the pressure relief on the coolant tank. We have read that it could be a few issues. We have replaced the vent cap as a quic… read more
Mike Mcmillan
Mike Mcmillan
Triage Tech/Shop Foreman
Associates
517 satisfied customers
Coolant transferring to overflow engine is shutting down
Coolant transferring to overflow engine is shutting down Volvo d12 coolant is not returning… read more
Mike Mcmillan
Mike Mcmillan
Triage Tech/Shop Foreman
Associates
517 satisfied customers
Paccar Mx 13 has a lot of pressure on the coolant resivour
Paccar Mx 13 has a lot of pressure on the coolant resivour tank what can be the issue … read more
Bradey V
Bradey V
Certificate
I Have a 2004 Volvo VE D12 Engine. its burning coolant i
I Have a 2004 Volvo VE D12 Engine. its burning coolant i have to add 1 to 1.5 Gallons every 200-250 miles. what could this be?… read more
Daniel Wilson
Daniel Wilson
Auto Mechanics 1&2/diesel mech
5,454 satisfied customers
Imediate high pressure in cooling system. 2012 peterbilt
yes and air compressor has been replaced and so has thermostat and oil cooler … read more
timdieseltech
timdieseltech
lead diesel tech, shop owner
Vocational, Technical or Trade School
207 satisfied customers
The air brake pressure on my 1998 Freightliner is slow to
The air brake pressure on my 1998 Freightliner is slow to build and when I apply the brake while the engine is running, the air pressure drops to 60psi within 15 pedal pumps. Too fast. I don't hear an… read more
Roy Belding
Roy Belding
7,749 satisfied customers
I am getting antifreeze build up in my secondary on my
I am getting antifreeze build up in my secondary on my radiator resservoir. Is that a bad thermostat? … read more
spankyjr1
spankyjr1
Journeyman
Vocational, Technical or Trade Scho
2,873 satisfied customers
I have 2009 freightliner M2 with ISB engine less than 26000
I have 2009 freightliner M2 with ISB engine less than 26000 lb gross weight. The truck is loosing coolant through the overflow on the coolant tank. I changed the cap with a new cap rated 20 pounds of … read more
Roy Belding
Roy Belding
7,749 satisfied customers
Wayne, Our 2009 International Prostar (Cummins ISX) is going
Hey Wayne,Our 2009 International Prostar (Cummins ISX) is going through antifreeze like crazy. A gallon a day. No apparent leaking and my driver can smell it. What could be going on? What should we be… read more
Wayne
Wayne
Journeyman
Vocational, Technical or Trade Scho
4,563 satisfied customers
2011 mach cxu613 does not build air pressure only 50 psi.
2011 mach cxu613 does not build air pressure only 50 psi . New governor same issue don't hear leaks from compressor discharge line or any major leaks… read more
Daniel Wilson
Daniel Wilson
Auto Mechanics 1&2/diesel mech
5,454 satisfied customers
I had a cummins isx 2009 in my shop Was building pressure
I had a cummins isx 2009 in my shop Was building pressure into 19 psi in coolant Check the egr cooler ok, did the combustion in coolant test Liquid turned blue to green Pull out the cylinder head And … read more
Roy Belding
Roy Belding
7,749 satisfied customers
Hino jo8 engine 2008 making pursue into radiator. Tested no
Hino jo8 engine 2008 making pursue into radiator . Tested no exhaust gas going in and egr cooler tested its good … read more
Jeremy
Jeremy
Certified Truck/Bus Technician
Associate Degree
2,747 satisfied customers
I have this detroit s60 egr 2006 at my shop whats the
i have this detroit s60 egr 2006 at my shop whats the nominal coolant pressure its building up around 22-25 psi standing without load at high idle i guess its more than normal already changed the air … read more
Daniel Wilson
Daniel Wilson
Auto Mechanics 1&2/diesel mech
5,454 satisfied customers
I have a Cummins ISX 2008 model, it has started blowing coolant out the overflow. The cool
I have a Cummins ISX 2008 model, it has started blowing coolant out the overflow. The coolant tank is a two part tank, you have the operating side that feeds the cooling system and then you have the o… read more
Andy
Andy
truck /coach technician
Vocational, Technical or Trade School
213 satisfied customers
Working on a 2000 dt466e. Coolant is mixing with the oil In
Working on a 2000 dt466e. Coolant is mixing with the oil In the crankcase.It has a new oil cooler. It does not overheat. It is not smoking nor missing. I removed the oil pan pressurized the cooling sy… read more
Andy
Andy
truck /coach technician
Vocational, Technical or Trade School
213 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
4,563 satisfied customers
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Meet the Experts:

Daniel Wilson

Daniel Wilson

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Owner at DJ Wilson

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Wayne

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

Jeremy

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Curtis B.

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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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