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Related Medium and Heavy Trucks Questions
Jake brake stopped working on our 2002 Peterbilt 379. It's
Jake brake stopped working on our 2002 Peterbilt 379 … read more
NicholasM1019
NicholasM1019
Diesel Technician
Vocational, Technical or Trade School
20 satisfied customers
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
20 satisfied customers
I did a engine swap on a 1994 Peterbilt 379 that had a model
I did a engine swap on a 1994 Peterbilt 379 that had a B model cat, I put a 3406e (6ts04777) I'm trying to hook up jakes and cruise but the wiring diagram doesn't explain what's 12volt power and groun… read more
catmastertech
catmastertech
Field service technician
Vocational, Technical or Trade Scho
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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
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Vocational, Technical or Trade School
20 satisfied customers
I did a engine swap on a 1994 Peterbilt 379, original engine
I did a engine swap on a 1994 Peterbilt 379, original engine was a 3406b swapped to a 3406e. I'm trying to find out how to wire the engine brake and cruise control. … read more
Cat Man
Cat Man
Cat Engine Expert
Vocational, Technical or Trade Scho
10,317 satisfied customers
I have a 1996 model 379 peterbilt with a cat 3406e in it.
I have a 1996 model 379 peterbilt with a cat 3406e in it. The cruise control has started not working intermittently. I thought it had to be the on/off switch so I changed it and it still does the same… read more
BrentR718
BrentR718
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1997 kenworth t800 with Cummins m11. Bought truck found for
1997 kenworth t800 with Cummins m11. Bought truck found for unknown reason the owner swapped out the instrument levers on the right side … read more
cumminsdr
cumminsdr
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High School or GED
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Switch Meritor 10 speed with Eaton 13 speed oem has cruise
Switch Meritor 10 speed with Eaton 13 speed oem has cruise control in shift knob along with in dash. Can the shift knob control be disconnected with or without issues? … read more
Wayne
Wayne
Journeyman
Vocational, Technical or Trade Scho
4,563 satisfied customers
It is a 95 Peterbilt with a 3406e. The Jake brake is not
It is a 95 Peterbilt with a 3406e. The Jake brake is not working on low stage. We have ruled out switch. Wondering if there was a relay that worked the Jake … read more
Cat Man
Cat Man
Cat Engine Expert
Vocational, Technical or Trade Scho
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2005 9900 international replaced isx with 3406e 2ws. Had a/c
2005 9900 international replaced isx with 3406e 2ws. Had a/c hoses made for my truck not sure they made them right.does it matter which hose goes in what hole in the a/c. From the condenser to the a/c… read more
][\][iCk0411
][\][iCk0411
Fleet Warranty Manager
Vocational, Technical or Trade School
5 satisfied customers
I have a 97 Peterbilt 378. I had some welding done in the
I have a 97 Peterbilt 378. I had some welding done in the frame yesterday and the truck ran fine today. While driving today, I noticed my engine brake would only work when I pressed the brake pedal, a… read more
Daniel Wilson
Daniel Wilson
Auto Mechanics 1&2/diesel mech
5,454 satisfied customers
Can I take a 70 pin ecm off a 3126 and flashbit to a 3406e,
Can I take a 70 pin ecm off a 3126 and flashbit to a 3406e … read more
Cat Man
Cat Man
Cat Engine Expert
Vocational, Technical or Trade Scho
10,317 satisfied customers
I have a 1999 Pete 379 with 3406e. Wiring for the two
I have a 1999 Pete 379 with 3406e. Wiring for the two coolant temp sensors was rigged by previous owners. Having problems trouble shooting to find which goes to which sensor. (i.e. gauge or ECM). Also… read more
Daniel Wilson
Daniel Wilson
Auto Mechanics 1&2/diesel mech
5,454 satisfied customers
I am swapping a Cat 3406E (5EK90455 40 pin ecm) into a truck
Hello I am swapping a Cat 3406E (5EK90455 40 pin ecm) into a truck that came with a 3406E (2WS14105 70 pin ecm). I have some wiring diagrams but I'm wondering if you can tell me where to put these wir… read more
Cat Man
Cat Man
Cat Engine Expert
Vocational, Technical or Trade Scho
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I installed a 2WS Emodel in place of a MXS C-15 in a 2007
I installed a 2WS Emodel in place of a MXS C-15 in a 2007 Freightliner classic. The engine starts and runs and the dash works but it wont communicate with lap top . Yes the MXS ECM did and still does … read more
Cat Man
Cat Man
Cat Engine Expert
Vocational, Technical or Trade Scho
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I have a 2000 peterbilt 379exh with a cat 3406e 2ws truck
I have a 2000 peterbilt 379exh with a cat 3406e 2ws truck vin 508940. I need to know where the pressure switch for the cruise control is located.… read more
Cat Man
Cat Man
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Vocational, Technical or Trade Scho
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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
5,454 satisfied customers
I'm switching a 99 peterbilt from Detroit ddec3 to cat 3406e
I'm switching a 99 peterbilt from Detroit ddec3 to cat 3406e 40 pin. What do I need for the cab. I have the harness from the ecm to the firewall from a donor truck. … read more
Daniel Wilson
Daniel Wilson
Auto Mechanics 1&2/diesel mech
5,454 satisfied customers
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Meet the Experts:

Daniel Wilson

Daniel Wilson

5,454 satisfied customers

Owner at DJ Wilson

Cat Man

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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

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Curtis B.

Curtis B.

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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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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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