Medium and Heavy Trucks

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Related Medium and Heavy Trucks Questions
When I'm going down the road. 2007 387 Pete. It looses air
2007 387 Pete. It looses air on the secondary side. Only when I'm in motion, it goes down to zero. It holds air on the primary side up to 100lbs. When sitting still it goes up to 125 n sometimes hold there. … read more
Jeremy
Jeremy
Certified Truck/Bus Technician
Associate Degree
2,672 satisfied customers
I have a 2011 Volvo Vnl d13 i try to turn it on and it will
I have a 2011 Volvo Vnl d13 i try to turn it on and it will be on for 3 seconds andthen turn off it also shows the code low air pressure to transmission.what could it be? … read more
Steven
Steven
Shop Foreman/Triage Tech
Associates
2,169 satisfied customers
I have a 1988 pet engine but air build up really slow. 1988
i have a 1988 pet(###) ###-#### engine but air build up really slow … read more
spankyjr1
spankyjr1
Retired
Vocational, Technical or Trade Scho
420 satisfied customers
Air compressor not keeping up pressure 2006 sterling with
air compressor not keeping up pressure 2006 sterling with Mercedes … read more
Andy
Andy
truck /coach technician
Vocational, Technical or Trade School
203 satisfied customers
I build 120 on both primary and secondary tanks than when I
I build 120 on both primary and secondary tanks than when I idle secondary lpressure stedely drops have replaced pressure protection valve air compressor governor one way check valve three air bags th… read more
Andy
Andy
truck /coach technician
Vocational, Technical or Trade School
203 satisfied customers
Question on another truck 2006 Volvo 780 D12 465hp vin:
Question on another truck 2006 Volvo 780 D12 465hp vin: *****************Drives ok..no fault codes but loss of power uphill...terrible when loaded 27,000 plus slows down to 20 mph on hills… read more
Steven
Steven
Shop Foreman/Triage Tech
Associates
2,169 satisfied customers
I have a brake system question on my 2007 Volvo truck. The
I have a brake system question on my 2007 Volvo truck. The air brake system builds to 135 psi fine. However, during operation of the brakes the pressure quickly goes down to 95-100 psi. It's at this p… read more
Steven
Steven
Shop Foreman/Triage Tech
Associates
2,169 satisfied customers
How difficult is it to change rear motor mounts on D12
How difficult is it to change rear motor mounts on D12 Volvo? … read more
Steven
Steven
Shop Foreman/Triage Tech
Associates
2,169 satisfied customers
I have volvo with d12 engine, when I'm on hills and truck
I have volvo with d12 engine, when I'm on hills and truck starts to raise the temperature to let's say 210, fan does not turn on. I've replaced the fan clutch and still nothing. I'm not getting any fa… read more
Daniel Wilson
Daniel Wilson
Auto Mechanics 1&2/diesel mech
3,632 satisfied customers
I have vcb epg 1 electrical problem d12 volvo engine, 2007
i have vcb epg 1 electrical problem d12 volvo engine … read more
Daniel Wilson
Daniel Wilson
Auto Mechanics 1&2/diesel mech
3,632 satisfied customers
Got an air leak somewhere on a 1996 Volvo tractor with M11+.
Got an air leak somewhere on a 1996 Volvo tractor with M11+. If we dump the suspension it holds air all night. If we do not dump it ... we're losing air. We have replaced the Air Dryer (needed one any… read more
spankyjr1
spankyjr1
Retired
Vocational, Technical or Trade Scho
420 satisfied customers
Have a 2007 volvo tractor. It won't hold air and the air
Have a 2007 volvo tractor. It won't hold air and the air seems to be bleeding out of the ABS valve on frame rail under passenger side of cab. Reportedly this ABS valve is new replaced by someone else.… read more
spankyjr1
spankyjr1
Retired
Vocational, Technical or Trade Scho
420 satisfied customers
We have 1 2006 volvo semi d12 last 8 of vin 6n423865 eng
hello we have 1 2006 volvo semi d12 last 8 of vin 6n423865 eng seriel number eng model ve d12 508714 395 the problem where having with it is try dyning out idels up an down by itself has codes epg1 si… read more
Daniel Wilson
Daniel Wilson
Auto Mechanics 1&2/diesel mech
3,632 satisfied customers
Hi Ive got a freightliner argosy 2007 with airliner suspension.
Hi Ive got a freightliner argosy 2007 with airliner suspension. One random day the rear air bags just pumped up. Got height control valve replaced but same problem, lowered the valve to original heigh… read more
spankyjr1
spankyjr1
Retired
Vocational, Technical or Trade Scho
420 satisfied customers
i have a question for a mechanic very experienced in freightliner
i have a question for a mechanic very experienced in freightliner school bus air ride suspension systems . i drive a 2004 freightliner 78 passenger school bus , thomas body , mercedes engine , air bra… read more
Toby
Toby
Vocational, Technical or Trade Scho
107 satisfied customers
I have a 05 volvo be d12-465 tractor truck, my engine break
I have a 05 volvo be d12-465 tractor truck, my engine break quit on me today, when I turn it on it makes a hissing sound like air leaking from a tire, I'm a rookie driver but I took a look under the h… read more
Eurotruck72
Eurotruck72
Garage owner
122 satisfied customers
I am thinking to buy a truck volvo 2006 used ,day cab with
I am thinking to buy a truck volvo 2006 used ,day cab with engine D 12 , 395 hp and 479,000 miles in $29,500.00. Please let me know your opinion about . Thanks in advance… read more
Wayne
Wayne
Journeyman
Vocational, Technical or Trade Scho
3,400 satisfied customers
2006 Volvo commerical truck with a volvo engine i was driving
2006 Volvo commerical truck with a volvo engine i was driving n stop light came on dash board telling me to stop the truck, i stop for. A while it sending codes like truck is overheated but i let the … read more
Eurotruck72
Eurotruck72
Garage owner
122 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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