Medium and Heavy Trucks

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Related Medium and Heavy Trucks Questions
I have a Peterbilt 337 with a PX 6 engine. Vin is 8m768805.
I have a Peterbilt 337 with a PX 6 engine. Vin is 8m768805. With are having a low power problem. We had a code for a turbo actuator. we replaced the actuator. code came back. we replaced the turbo. Co… read more
Andy
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Vocational, Technical or Trade School
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Very loud hissing sound and loss of power and black smoke .i have checked all the plumbing on the turbo can not find any leaks … read more
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Blowing coolant out of my overflow not over heating no oil
Blowing coolant out of my overflow not over heating no oil in coolant when I release the pressure from the cap and take off it will not blow any coolant … read more
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Imediate high pressure in cooling system. 2012 peterbilt
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I have a detroit 60 14L. I suddenly have a loss of oil
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I have a 2004 C-15 Acert Single turbo conversion Peterbilt
I have a 2004 C-15 Acert Single turbo conversion Peterbilt 379. Recently I have been getting a vibration in the truck. It is most prevalent under load and in gears 16th to 18th. Engine runs rough at R… read more
Cat Man
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I got a 2012 peterbilt w a isx15 while im driving the stop
I got a 2012 peterbilt w a isx15 while im driving the stop engine warning light comes on and shows a little #1 . it did have a loss of power also . what can this be ? … read more
cumminsdr
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I just had a C15 accert overhauled and I think the oil
I just had a C15 accert overhauled and I think the oil pressure is now to low. When I took it in at 1.1 million it had 60 psi at 1250 rpm at 188*. Now it has 40 at the same rpm and temp and at 200* id… read more
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Have a 6 v 92 in a fire truck with 110 k miles . oil
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N14 running 1400 to 1500 rpms oil pressure between 20-25 is
N14 running 1400 to 1500 rpms oil pressure between 20-25 is this normal? At 1900 rpm it's 30/35psi… read more
cumminsdr
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2006 c-15 accert, has exccesive blow by,loosing a lot of oil out blow by tube,engine sounds and runs good,we have been told that it could be turbo boost back into crankcase,or compressor issues,cracke… read more
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Cat Man! I need some help once again. 2007 Freighliner M2
Cat Man! I need some help once again. 2007 Freighliner M2 CAT C7 300hp, WAX48686 All fluids full. No check engine light. 2 nights ago it died while driving, and would not restart. I had it towed to th… read more
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Caterpillar C13 low oil pressure. We are working on a 2007
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I have a 1998 Peterbilt 378 ..VIN 462495.. The AC compressor
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We Have a 2008 386 Peterbilt with Cummins ISX Engine , Driver
We Have a 2008 386 Peterbilt with Cummins ISX Engine , Driver Says Oil Pressure is Fluctuwating Between 20 & 60 Lbs , Normal Pressure has been 38 lbs he changes Oil Filter & Made No Difference… read more
cumminsdr
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HI! I have a 1989 Model 377 Peterbilt, VIN#1XPCDR9X7KN270451
HI! I have a 1989 Model 377 Peterbilt, VIN#1XPCDR9X7KN270451 It has AMETEK Swith Panel No. 156171 PB P/N 17-03386 this has up/down Function, HRS/OAT/AS (UP), FUEL S (UP), TEMP (down), CLOCK/ET (DOWN) … read more
Daniel Wilson
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Hi, my name isXXXXX own Freightliner Century 2004 Detroit
Hi, my name isXXXXX own Freightliner Century 2004 Detroit 60 engine last 6 vin M12223. Have a loss of power issue with my truck . And this killing me. When I driving without trailer everything is fine… read more
Daniel Wilson
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Meet the Experts:

Daniel Wilson

Daniel Wilson

4,737 satisfied customers

Owner at DJ Wilson

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I am ASE Master Truck Certified.

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

cumminsdr

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All types of Cummins applications

Curtis B.

Curtis B.

Technician

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Technician turned service manager on multiple lines of trucks and engines, used in industry.

Chris (aka-Moose)

Chris (aka-Moose)

Technician

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24 years of experience diagnosing & repairing

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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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