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I'm looking for Cat Man or someone knowledgable in 2007 cat
I'm looking for Cat Man or someone knowledgable in 2007 cat c15 twin turbo engine. Engine fan is not disengaging with key switch on or with engine running. There's no power to selonoid wire from ecm t… read more
NicholasM1019
NicholasM1019
Diesel Technician
Vocational, Technical or Trade School
8 satisfied customers
Fan will not kick off. 2013 Peterbilt 389 isx cummings. And
yes and have put in a fan solenoid all new ac switches has power to solenoid when truck is not running key on but when you start it has no power to solenoid and fan wont kick out if I put power to solenoid fan shuts off … read more
Mike Mcmillan
Mike Mcmillan
Triage Tech/Shop Foreman
Associates
430 satisfied customers
I have a 98 379 that the fan wont kick on after an inframe
I have a 98 379 that the fan wont kick on after an inframe new water pump, thermostats, new sensors. On the computer it says fan is constantly on … read more
Mike Mcmillan
Mike Mcmillan
Triage Tech/Shop Foreman
Associates
430 satisfied customers
I have a 1996 peterbilt 379 with a rebuilt N14's celect
I have a 1996 peterbilt 379 with a rebuilt N14's celect Cummins. It will not do a diagnostic code check and will not show codes on instrument panel on the dash. Last week I was experiencing no throttl… read more
Daniel Wilson
Daniel Wilson
Auto Mechanics 1&2/diesel mech
5,080 satisfied customers
My engine fan will not turn on. Either with the manual
My engine fan will not turn on. Either with the manual switch or just letting the ecm do it by water temp. I've replaced the fan air solenoid and it still will not engage. Unless I cut the wires to th… read more
Cat Man
Cat Man
Cat Engine Expert
Vocational, Technical or Trade Scho
5,234 satisfied customers
Fan clutch will not disengage while driving and manual
fan clutch will not disengage while driving and manual switch not working in cab. … read more
Andy
Andy
truck /coach technician
Vocational, Technical or Trade School
207 satisfied customers
I have a 1995 peterbilt 379 with a cummings n14 Celect plus
i have a 1995 peterbilt 379 with a cummings n14 Celect plus i am trying to find the engine fan relay location ( fan is constantly staying on) … read more
Andy
Andy
truck /coach technician
Vocational, Technical or Trade School
207 satisfied customers
Ecm coolant sensor is reading 20 degrees higher than dash
ecm coolant sensor is reading 20 degrees higher than dash gauge. when dash gauge reaches 200 the hot water light comes on then few seconds later stop engine light. check with inferred temp and dash ga… read more
Andy
Andy
truck /coach technician
Vocational, Technical or Trade School
207 satisfied customers
96 peterbilt 379 with 3406e 5ek. Pin 28 for fan output has
96 peterbilt 379 with 3406e 5ek. Pin 28 for fan output has 12v with fan relay not installed but goes away with relay in… read more
Cat Man
Cat Man
Cat Engine Expert
Vocational, Technical or Trade Scho
5,234 satisfied customers
Catman, Have a problem with a 5EK not starting, not getting
Hey Catman,Have a problem with a 5EK not starting, not getting any engine speed, do not have any engine speed codes, just needing some advice Thanks… read more
Cat Man
Cat Man
Cat Engine Expert
Vocational, Technical or Trade Scho
5,234 satisfied customers
I have a 2005 peterbilt that has a 3406e 5ek engine. My
I have a 2005 peterbilt that has a 3406e 5ek engine. My speedometer was working fine. We changed the ecm and copied the parameters out of the old ecm. Now the speedometer is way out of calibration. Ge… read more
Wayne
Wayne
Journeyman
Vocational, Technical or Trade Scho
4,023 satisfied customers
The fan doesnt come on with jakes or when engine temp is hot
the fan doesnt come on with jakes or when engine temp is hot in our 1998 peterbilt 378 with a 3406e … read more
Cat Man
Cat Man
Cat Engine Expert
Vocational, Technical or Trade Scho
5,234 satisfied customers
I put on a new fan clutch and solenoid. The fan will not
I put on a new fan clutch and solenoid. The fan will not engage unless I remove the air hose going to the clutch. The manual fan switch on the dash isn't working either. I got a new ecm 3 weeks ago. … read more
Wayne
Wayne
Journeyman
Vocational, Technical or Trade Scho
4,023 satisfied customers
I have a 1999 peterbilt with a 3406e model 2ws serial #
hi I have a 1999 peterbilt with a 3406e model 2ws serial # ***** in it. I have a engine fan problem. Fan stays on all the time. In cab switch does not work either way on auto or manual. when checking … read more
Cat Man
Cat Man
Cat Engine Expert
Vocational, Technical or Trade Scho
5,234 satisfied customers
Maybe. I need help with engine brake wiring on western star
Maybe. I need help with engine brake wiring on western star 1998 w/60 series Detroit. I have to get more info. Other mechanics did an engine swap and i need to know what ecm, wiring on engine and more… read more
Daniel Wilson
Daniel Wilson
Auto Mechanics 1&2/diesel mech
5,080 satisfied customers
I have at cat c15 in a o4 peterbilt. Flash codes 72,73,74 but I have a new Ecu with new wi
I have at cat c15 in a o4 peterbilt. Flash codes 72,73,74 but I have a new Ecu with new wire harness about 100k ago. Injectors were not replaced in the overhaul to my knowledge. The truck is an acert … read more
Cat Man
Cat Man
Cat Engine Expert
Vocational, Technical or Trade Scho
5,234 satisfied customers
I got an 01 peterbilt that wont engage the fan hub with the
I got an 01 peterbilt that won't engage the fan hub with the manual override switch or otherwise. The air solenoid will engage the fan when unplugged and it seems that when I turn the manual override … read more
Cat Man
Cat Man
Cat Engine Expert
Vocational, Technical or Trade Scho
5,234 satisfied customers
low coolant light stays on on our 2013 peterbilt 389 . have
low coolant light stays on on our 2013 peterbilt 389 . have changed sensor and checked wires and found nothing . even took truck to cummins and they couldn't find the problem . they said it must be on… read more
Daniel Wilson
Daniel Wilson
Auto Mechanics 1&2/diesel mech
5,080 satisfied customers
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Meet the Experts:

Daniel Wilson

Daniel Wilson

5,080 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

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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