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Related Medium and Heavy Trucks Questions
The engine fan will not come on automatically when water
The engine fan will not come on automatically when water temp gets high under a load. The fan works when I turn on manual switch and the fan works with the high pressure side of A/C. this is a C-16 en… read more
Cat Man
Cat Man
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Vocational, Technical or Trade Scho
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I have a kw t660 2013 with a Cummins isx, the radiator fan
I have a kw t660 2013 with a Cummins isx, the radiator fan is kicking on all the time when water temp exceeds 181-183 degrees … read more
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Andy
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Vocational, Technical or Trade School
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07 w900 with cat c15. AC compressor won't engage. Engine fan
07 w900 with cat c15. AC compressor won't engage. Engine fan dash light on. … read more
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I'm working on a 2005 w900 with a cat c15, i have a code for
I'm working on a 2005 w900 with a cat c15, i have a code for the oil pressure control valve and the engine fan is stuck on. Could that valve be keeping the fan on if it's bad? … read more
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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
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Just installed a new block 6nz and having trouble finding
just installed a new long block 6nz and having trouble finding the location to a plug. im thinking its coolant temp because the ecm is reading 194 degreees coolant temp at all times. … read more
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I have a 2000 model CX613 Mack truck with the air controlled
I have a 2000 model CX613 Mack truck with the air controlled cooling fan and the fan stays on all the time. There is 12v power to the fan switch and no ground. we traced the ground to the ecu so we ne… read more
Jeremy
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C15 cat just done major over haul on engine fan want stop
C15 cat just done major over haul on engine fan want stop running put on computer say engine temp 193 on cold engine what wrong … read more
Cat Man
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I have a 3406e in a 99 westernstar, im trying to locate the
I have a 3406e in a 99 westernstar, im trying to locate the temp sensor that turns the fan switch on, I replaced the one in the thermostat housing and the fan still will only come on if you manually d… read more
Cat Man
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I have a 2000 N14 - 500 Engine ser. number is 11944673 the
I have a 2000 N14 - 500 Engine ser. number is ***** the engine temp will get up to about 220 or 225 before the fan comes on and when it comes on it only runs a short time [2 or 3 seconds]. I replaced … read more
Daniel Wilson
Daniel Wilson
Auto Mechanics 1&2/diesel mech
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We have a 99 kenworth that we replaced the ac compressor on
We have a 99 kenworth that we replaced the ac compressor on because it was leaking internally after replacing it we cant get power to the clutch anymore and have not been able to find a high or low pr… read more
spankyjr1
spankyjr1
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Vocational, Technical or Trade Scho
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Have a 2007 Kenworth T600 with caterpillar engine. What is
Have a 2007 Kenworth T600 with caterpillar engine. What is the freon charge for this truck with sleeper--lbs/oz? Kenworth said 4 lbs even but pressures very high and lines hot. after venting off some … read more
Andy
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truck /coach technician
Vocational, Technical or Trade School
207 satisfied customers
I have a 2005 W900 with ISX 15 engine. The engine fan does
I have a 2005 W900 with ISX 15 engine. The engine fan does not turn off. I can make it shut off by putting power to air solenoid next to heater housing. Also replaced thermostat sensor/switch by therm… read more
Daniel Wilson
Daniel Wilson
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2001 freightliner century with cummins N14, engine fan is constantly
2001 freightliner century with cummins N14, engine fan is constantly running. Have already replaced the ac high pressure switch and the fan clutch solenoid.… read more
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truck /coach technician
Vocational, Technical or Trade School
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I am working ona1997 W900 Kenworth with a N-14 celect plus
I am working ona1997 W900 Kenworth with a N-14 celect plus engine. The engine fan will work with with manual switch but will not come on automaticly with a/c or temp. I need a schematic of the manual … read more
spankyjr1
spankyjr1
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Vocational, Technical or Trade Scho
420 satisfied customers
Ive got an 08 w900 with a 600 isx engine. I replaced the fan
I've got an 08 w900 with a 600 isx engine. I replaced the fan hub cuz the clutch pack was worn and now my engine fan will not shut off when truck is running. I've tried the ac high pressure switch, en… read more
Daniel Wilson
Daniel Wilson
Auto Mechanics 1&2/diesel mech
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I have a 2001 w900 kw with a c15 475h cat engine. The problem
I have a 2001 w900 kw with a c15 475h cat engine. The problem I'm having is that the fan runs practically all the time. When it does shut off it only stays off for about 10 to 15 seconds and then come… read more
Cat Man
Cat Man
Cat Engine Expert
Vocational, Technical or Trade Scho
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I have a 94 t800 with an N14. It has an electrical actuated
I have a 94 t800 with an N14. It has an electrical actuated engine fan that suddenly runs almost constantly. I'm suspecting the high pressure switch on the ac compressor, since I've changed both water… read more
cumminsdr
cumminsdr
Mechanic
High School or GED
1,700 satisfied customers
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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

10,244 satisfied customers

I am ASE Master Truck Certified.

Wayne

Wayne

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

Jeremy

Jeremy

Certified Truck/Bus Technician

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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

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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