Medium and Heavy Trucks

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Have a 1996 freightliner fld 120. With a detroit 60 series.
Have a 1996 freightliner fld 120. With a detroit 60 series. … read more
Daniel Wilson
Daniel Wilson
12,207 satisfied customers
My fan clutch will not engage automatically but will engage
My fan clutch will not engage automatically but will engage when you press the manual switch the truck is a Kenworth WL 900 2,006 model It has a C 15 and it is air operated fan clutch … read more
Daniel Wilson
Daniel Wilson
12,207 satisfied customers
2000 freighterliner engine fan not operating properly.
2000 freighterliner engine fan not operating properly. 1FVXJJBB4YHF46708The truck blew a coolant line and overheated. Repaired the line. At first I thought the fan clutch was seized on but I disconnec… read more
Daniel Wilson
Daniel Wilson
12,207 satisfied customers
How do you troubleshoot the engine fan circuit? Fan operate
How do you troubleshoot the engine fan circuit? Fan operate on Ac request but not on engine temp. Replaced sensorand no change. Fan solenoid has power and operates fan when unplugged. 2007 freightline… read more
Daniel Wilson
Daniel Wilson
12,207 satisfied customers
I have a motor and harness out of a 96 fld freightliner vin#
I have a motor and harness out of a 96 fld freightliner vin# ***** … read more
Jeremy
Jeremy
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Associate Degree
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The AC have no power. If like the fuse are not working VOLVO
if like the fuse are not working VOLVO VNL(###) ###-####… read more
Mike Mcmillan
Mike Mcmillan
Triage Tech/Shop Foreman
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1995 k t 800 cat. fan only works manually we install new
1995 k t 800 cat. fan only works manually we install new thermal switch and solenoid problem still there need help. … read more
Daniel Wilson
Daniel Wilson
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Is a real person there? 1998 fld120 freightliner semi truck
Ye sand no I am putting an engine form this truck in a tractor. I need a certain section of the wire diagram to figure out 4 wires … read more
Daniel Wilson
Daniel Wilson
12,207 satisfied customers
I have a 1992 freightliner fld 120. The blower motor does
I have a 1992 freightliner fld 120. The blower motor does not work with the selector on the dashboard but it works if I apply power to it. I am. Thinking it's the relay.. But do not know which one is … read more
go-west..
go-west..
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Vocational, Technical or Trade Scho
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I have a 1999 freightliner and the compressor will not
I have a 1999 freightliner and the compressor will not engage so my a/c won't work … read more
Daniel Wilson
Daniel Wilson
12,207 satisfied customers
Ac compressor won't come on, 2004 Freightliner Columbia,
The blower motor won't come on unless I pull the fuse and put it back in… read more
go-west..
go-west..
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I have an 89 Peterbilt 378 with a Cummins N14 I bought used.
I have an 89 Peterbilt 378 with a Cummins N14 I bought used. I finally checked out and charged the AC it surprisingly blows very cold. The electric cooling fan instantly turns on when the AC is engage… read more
Wayne
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I DO ELECTRICAL WORK ON CARS, BUT MY LOCAL FIRE DEPARTMENT
I DO ELECTRICAL WORK ON CARS, BUT MY LOCAL FIRE DEPARTMENT HAS PROBLEMS WITH THE AIR PRESSURE FAN CLUTCH NOT ENGAGING WITH THE A/C ON A 01 FL80. I CAN UNPLUG THE SOLENOID AND IT COMES ON.… read more
Daniel Wilson
Daniel Wilson
12,207 satisfied customers
I have a 1991 freightliner with a 3406 peec the jake wont work
I have a 1991 freightliner with a 3406 peec the jake wont work . The cruse works . the cruse will turn off if you push the clutch or turn no jake switch.my scanner shows no codes. it shows 1.2%on tps … read more
Cat Man
Cat Man
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Vocational, Technical or Trade Scho
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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
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peterbilt 1990 379 day cab, 3406 ac problems, I have power
peterbilt 1990 379 day cab, 3406 b ac problems, I have power to dash switch through relay on fuse block, fan in cab turns on , blows ok. have power in to high pressure for ac fan switch for big motor,… read more
Daniel Wilson
Daniel Wilson
12,207 satisfied customers
have 2007 columbia, mbe 4000 cab and sleeper hvac. engine fan
have 2007 columbia, mbe 4000 cab and sleeper hvac. engine fan will not engage for high freon pressure compresser disengaes at 375 psi and engages at 325 psi. binary working good, engine fan engages at… read more
go-west..
go-west..
Technician
Vocational, Technical or Trade Scho
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have a 2005 Freightliner FLD has AC power issues been told
have a 2005 Freightliner FLD has AC power issues been told that need a circuit board @ $900.00 anyway a i can by pass the circuit board to power the AC through a relay… read more
Daniel Wilson
Daniel Wilson
12,207 satisfied customers
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Meet the Experts:

Daniel Wilson

Daniel Wilson

12,207 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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