Medium and Heavy Trucks

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Related Medium and Heavy Trucks Questions
I have a 2006 387 with c15 acert i have water coming out of
i have a 2006 387 with c15 acert i have water coming out of the blowby pipe with lots of blow by and i beleive its water in the oil pan its greenish but not milky just had it rebuilt new sleaves,head,… read more
Cat Man
Cat Man
Cat Engine Expert
Vocational, Technical or Trade Scho
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Where is the blend door on a 2009 387? Cummins isx, 2009
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I have a 2006 Peterbilt 387 Cat C15. The AC is throwing hot
I have a 2006 Peterbilt 387 Cat C15. The AC is throwing hot air. I checked and the AC hose is frozen. Should I close the heat valves? There's 4 of them I think … read more
Daniel Wilson
Daniel Wilson
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2003 Freightliner with CAT engine. Driver just called me.
2003 Freightliner with CAT engine. Driver just called me. Something burst under the hood. There is a 100 foot trail of coolant behind the truck. He can not see where anything has burst under the hood.… read more
Roy Belding
Roy Belding
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I have a 09 Cummins isx just did a complete overhaul and
I have a 09 Cummins isx just did a complete overhaul and just did 1st oil change after 1000 miles and oil pressure is running 30-32 psi under a load. Before rebuild it ran 38-40 psi under load until i… read more
Mike Mcmillan
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Cat Man, I have a Cummins and I haven't learned my way
Hi Cat Man , I have a Cummins and I haven't learned my way around Just Answer yet. 1999 Peterbilt 379 N14 Cummins Celect. Oil Temperature gauge inoperable and coolant/ antifreeze won't build heat unle… read more
cumminsdr
cumminsdr
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Do all acert c15 engines have a shunt line. mine doesnt seem
do all acert c15 engines have a shunt line. mine doesnt seem to have one … read more
Cat Man
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2004 cat acert c15 Diesel engine over heats only when boost
2004 cat acert c15 Diesel engine over heats only when boost pressure reaches over 30 psi with light loads and 17 psi with heavy loads. No coolant loss or oil. Compression is good on all cylinders. Wil… read more
Cat Man
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Vocational, Technical or Trade Scho
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Truck is over heating only on the uphill climb radiator and
Truck is over heating only on the uphill climb radiator and thermostat are not the issue they were replaced over a year ago with no change with issue. Good compression no oil or coolant loss at all … read more
Edward Haniewski
Edward Haniewski
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I am working on a 2007 Peterbilt 387, it has a Eaton
I am working on a 2007 Peterbilt 387, it has a Eaton Autoshift no clutch pedal. The transmission will not go into gear … read more
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I lost power to the sleeper in a 2002 Peterbilt 387 after I
I lost power to the sleeper in a 2002 Peterbilt 387 after I turned on the load lights in the back of the cab. Checked for blown fuses, but this truck doesn't use a fuse block, it uses what Peterbilt c… read more
Daniel Wilson
Daniel Wilson
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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
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Got a 06 Peterbilt 387 Pacer motor the dash lights blink on
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Cat Man
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I have a 2010 Peterbilt 387 and the heater will not blow hot
I have a 2010 Peterbilt 387 and the heater will not blow hot in the cab but it works fine in sleeper. Went to bed working fine and woke up to blowing cold. Some suggested it could be a blend door issu… read more
Jeremy
Jeremy
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I have a 2007 Peterbilt 379 with a C15 engine that is losing
I have a 2007 Peterbilt 379 with a C15 engine that is losing a lot of antifreeze but does not have any visible leaks other than the drain tube from the reservoir. It is building high pressure, but is … read more
Cat Man
Cat Man
Cat Engine Expert
Vocational, Technical or Trade Scho
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Sleeper heater motor quit; motor, activator switch,resistor,
Sleeper heater motor quit; motor, activator switch,resistor, switches, fuses, relays,connections, wiring, all check out. If I hook up a remote ground wire, the motor runs on high and nothing except th… read more
Andy
Andy
truck /coach technician
Vocational, Technical or Trade School
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Have a 2007 Peterbilt with a Cat C15 Acert 475hp. Get engine
Have a 2007 Peterbilt with a Cat C15 Acert 475hp. Get engine oil in the radiator. No other fluids mixing anywhere, just getting oil into the cooling system. Replaced the oil cooler with a Reman form c… read more
Cat Man
Cat Man
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How do i replace the blower motor in my 2006 peterbilt 387
How do i replace the blower motor in my 2006 peterbilt 387 w/ cummins engine. I can't seem to disconnect the motor from the fan.… read more
Wayne
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Meet the Experts:

Daniel Wilson

Daniel Wilson

4,737 satisfied customers

Owner at DJ Wilson

Cat Man

Cat Man

Cat Engine Expert

10,222 satisfied customers

I am ASE Master Truck Certified.

Wayne

Wayne

Journeyman

4,023 satisfied customers

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

Jeremy

Jeremy

Certified Truck/Bus Technician

2,740 satisfied customers

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

cumminsdr

cumminsdr

Mechanic

1,700 satisfied customers

All types of Cummins applications

Curtis B.

Curtis B.

Technician

1,571 satisfied customers

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

Chris (aka-Moose)

Chris (aka-Moose)

Technician

353 satisfied customers

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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