Medium and Heavy Trucks

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Related Medium and Heavy Trucks Questions
I have a 379 Pete, the jake does not work. I have no power
I have a 379 Pete, the jake does not work. I have no power to the jake brake switch. Is this my problem?? … read more
NicholasM1019
NicholasM1019
Diesel Technician
Vocational, Technical or Trade School
7 satisfied customers
2003 peterbilt 378 vin 1CP-FDBOX-6-4D808339 cat C 15 MBN
2003 peterbilt 378 vin 1CP-FDBOX-6-4D808339 cat C 15 MBN jakes,cruise control quit working I'm looking for the inputs to J2 from cab switches test good & controlling ground I would like pin numbers at… read more
NicholasM1019
NicholasM1019
Diesel Technician
Vocational, Technical or Trade School
7 satisfied customers
I have a 1997 detroit series 60. The Jake brakes aren't
I have a 1997 detroit series 60. The Jake brakes aren't working. When I plug my scan tool in, I can see the brake coming on in the parameters, but they aren't physically coming on. Please advise… read more
Daniel Wilson
Daniel Wilson
Auto Mechanics 1&2/diesel mech
11,850 satisfied customers
I have a 2000 w900L kenworth with a 2004 isx 475 the cruise
i have a 2000 w900L kenworth with a 2004 isx 475 the cruise control stopped working and i have a 10second delay in the jake both happen at the same time jake comes on after 10 seconds after you releas… read more
Daniel Wilson
Daniel Wilson
Auto Mechanics 1&2/diesel mech
11,850 satisfied customers
2000 peterbilt with cat c12 engine Jake's dont work I want
2000 peterbilt with cat c12 engine Jake's dont work I want to wire them directly with my own switch … read more
Daniel Wilson
Daniel Wilson
Auto Mechanics 1&2/diesel mech
11,850 satisfied customers
After having a quacolmm instaled in a Mack CXU with a MP8
Hello,After having a quacolmm instaled in a Mack CXU with a MP8 engine the jake brake and cruise control has quit working. … read more
Mike Mcmillan
Mike Mcmillan
Triage Tech/Shop Foreman
Associates
430 satisfied customers
We have a C15 Acert in a 2005 Peterbilt 378. The jake brake
We have a C15 Acert in a 2005 Peterbilt 378. The jake brake only works on low and before that it was working in every position but started cutting out. Now it is only giving us low and there is no pow… read more
Daniel Wilson
Daniel Wilson
Auto Mechanics 1&2/diesel mech
11,850 satisfied customers
Cruise won't kick off with brake lights. clutch switch will
cruise won't kick off with brake lights. clutch switch will turn it off. engine brake will not work with cruise switch in on position. … read more
Jeremy
Jeremy
Certified Truck/Bus Technician
Associate Degree
2,740 satisfied customers
Have a 2002 freightliner classic (old style, square nose)
have a 2002 freightliner classic (old style, square nose) with detroit series 60 engine. Cruise control is not working correctly. 1) it won't engage while truck is moving. 2) parked, "cruise" will set… read more
Daniel Wilson
Daniel Wilson
Auto Mechanics 1&2/diesel mech
11,850 satisfied customers
Cruise control and jake brakes are not working. 07 kw t800
cruise control and jake brakes are not working. 07 kw t800 with isx 870. the switch for the jakes light up but brakes do not come on. … read more
Daniel Wilson
Daniel Wilson
Auto Mechanics 1&2/diesel mech
11,850 satisfied customers
2006 western star 4900fa cruise control and engine brake quit
2006 western star 4900fa cruise control and engine brake quit after truck warms up. both work fine prior to warm up. looking for schematics and or theory of operation. vehicle has new clutch switch, s… read more
Daniel Wilson
Daniel Wilson
Auto Mechanics 1&2/diesel mech
11,850 satisfied customers
2007 international 4300, 466e, running on 4 cylinders,
2007 international 4300, 466e, running on 4 cylinders, 6,3,2,1 has had new valve cover gasket installed. Just bought the truck, has 120,000 kms, previous owner said it was a nightmare Besides not runn… read more
Wayne
Wayne
Journeyman
Vocational, Technical or Trade Scho
4,023 satisfied customers
I have a 2004. C15 bridge motor that's giving me grief with
I have a 2004. C15 bridge motor that's giving me grief with the ecm I think, when Jake brake is applied the fan motor comes on, the cruise control and the Jake brakes work periodically you can not dep… read more
Cat Man
Cat Man
Cat Engine Expert
Vocational, Technical or Trade Scho
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Good Day Gents, I need some help with a Freightliner with a
Good Day Gents, I need some help with a Freightliner with a Detroit Series 60 engine please. 06/2002 1FUJAPC943DK67814 engine DD06R0692264 The issue is the idle up does not work and Jake Brakes worked… read more
Daniel Wilson
Daniel Wilson
Auto Mechanics 1&2/diesel mech
11,850 satisfied customers
2010 int Prostar with ISX 15 serial #79408057 CM871. I did
2010 int Prostar with ISX 15 serial #79408057 CM871. I did recalibration for better HP got Cal file from other user used insite to calibrate engine runs fine no fault codes but the problem is my engin… read more
Andy
Andy
truck /coach technician
Vocational, Technical or Trade School
207 satisfied customers
I have a 2005 freightliner Columbia vin #n45191. jakes and
I have a 2005 freightliner Columbia vin #n45191. jakes and cruise quit working. tested clutch switch and found the signal at the ecu. didn't know what pin to test for service brake. I tested all switc… read more
Travis A. Wells
Travis A. Wells
Truck Mechanic
Associates of Applied Science
15 satisfied customers
Have a 2011 Cascadia, cruise and jakes stop working. Then truck
Have a 2011 Cascadia, cruise and jakes stop working. Then truck derates 5 mph. Shut power switctch off then back on ,derate gone. But cruise and jake have only worked once in last 4 days..any thoughts… read more
Clayton
Clayton
Technician
Vocational, Technical or Trade Scho
627 satisfied customers
Have cruise set fan clutch kicks in cruise shuts down jakes
Have cruise set fan clutch kicks in cruise shuts down jakes won't work. Fan clutch shuts down cruise and jake will work until fan clutch kicks back in. Temp is around 180… read more
Daniel Wilson
Daniel Wilson
Auto Mechanics 1&2/diesel mech
11,850 satisfied customers
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Meet the Experts:

Daniel Wilson

Daniel Wilson

11,850 satisfied customers

Owner at DJ Wilson

Cat Man

Cat Man

Cat Engine Expert

5,234 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

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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

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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