Medium and Heavy Trucks

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Related Medium and Heavy Trucks Questions
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
Auto Mechanics 1&2/diesel mech
4,737 satisfied customers
I'm having overheating problems on a ISC 8.3 engine in my
I'm having overheating problems on a ISC 8.3 engine in my 2013 40 foot motorhome. Just had service performed, oil change etc. and had a low coolant alarm and then check engine alarm as I topped a long… read more
cumminsdr
cumminsdr
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High School or GED
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Have a 2017 International Prostar VIN 3HCDJAPR7JL528506 with
have a 2017 International Prostar VIN 3HCDJAPR7JL528506 with an ISX15 Cummins in it.... driver is telling me this winter it normally ran around 210-215 degrees,, on warm days it jumps to 230 then drop… read more
Wayne
Wayne
Journeyman
Vocational, Technical or Trade Scho
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I'm thinking my fan clutch is seized on my 2004 intl 4400
I'm thinking my fan clutch is seized on my 2004 intl 4400 with dt530. It never free wheels, hot or cold, and the serpentine belt slips at higher rpm. The fan clutch has air tube … read more
Andy
Andy
truck /coach technician
Vocational, Technical or Trade School
207 satisfied customers
2008 bluebird cat c7 fan run randomly at any temp sometimes
2008 bluebird cat c7 fan run randomly at any temp sometimes will not run and engine overheats noone has found problem since new just had multiplex replaced ran good for a week did not overheat today i… read more
Daniel Wilson
Daniel Wilson
Auto Mechanics 1&2/diesel mech
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Hino jo8 engine 2008 making pursue into radiator. Tested no
Hino jo8 engine 2008 making pursue into radiator . Tested no exhaust gas going in and egr cooler tested its good … read more
Jeremy
Jeremy
Certified Truck/Bus Technician
Associate Degree
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Got a series 60 engine that was fully rebuilt last year
Got a series 60 engine that was fully rebuilt last year 2015. I took the block to machine shop and they cut the counter bores and shaved the deck. A few months later after assembling engine and pullin… read more
Wayne
Wayne
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Vocational, Technical or Trade Scho
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I'm ***** *****, I have a 1994 Fuso fh 100 that has been
Hi I'm ***** *****, I have a 1994 Fuso fh 100 that has been overheating. I flushed tthe radiator but I still have the problem. I am suspecting the oil cooler fan. How can I test if the fan is working?… read more
Daniel Wilson
Daniel Wilson
Auto Mechanics 1&2/diesel mech
4,737 satisfied customers
I HAVE A 2006 NO 258 WHICH IS OVERHEATING AND PUSHING
I HAVE A 2006 HINO 258 WHICH IS OVERHEATING AND PUSHING COOLANT. IT WILL RUN FINE SITTING AT IDLE BUT WHEN ACCELERATED WILL PUSH COOLANT. HAS NO HEAT EITHER AND WHEN PULL THE HEATER CORE HOSES OFF GET… read more
Daniel Wilson
Daniel Wilson
Auto Mechanics 1&2/diesel mech
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I have a 2008 gulfstream tourmaster motorhome (diesel
I have a 2008 gulfstream tourmaster motorhome (diesel pusher) with a mercedes MBE900 engine (330HP) on a Freightliner chassis. Just bought it with 42k miles and in great shape. One drive from Orlando … read more
spankyjr1
spankyjr1
Journeyman
Vocational, Technical or Trade Scho
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I have a 1997 Amtran rear engine school bus with the 7.3 liter
I have a 1997 Amtran rear engine school bus with the 7.3 liter diesel. The bus is overheating only on the highway. I have replaced the radiator and thermostat. I have two wires coming out of the radia… read more
Andy
Andy
truck /coach technician
Vocational, Technical or Trade School
207 satisfied customers
Hey Dan Its Richard we are still having a problem with our
Hey Dan Its Richard we are still having a problem with our 2006 Hino the temperature is going to the hot and the heater gets cold and hot, but when the temperature goes up towards the hot the heater g… read more
Daniel Wilson
Daniel Wilson
Auto Mechanics 1&2/diesel mech
4,737 satisfied customers
Answers from Two Experts requested: 2008 Fleetwood Discovery motorhome
2008 Fleetwood Discovery motorhome with Cummins 6.3ISL; has about 20k miles now. Have pulled a 6T trailer for years without any trouble relative to coolant temp, all of a sudden any hill I have to cli… read more
Geoff
Geoff
BS
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I have a 2005 Kenworth T800 with a c-15 cat engine. Truck is
I have a 2005 Kenworth T800 with a c-15 cat engine. Truck is overheating, the fan won't kick in and once I switch the fan to manual, the temperature stays high and doesn't drop. I replaced both thermo… read more
Cat Man
Cat Man
Cat Engine Expert
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I have 2006 International 4300 that is overheating. I changed
I have 2006 International 4300 that is overheating. I changed the fan clutch and the thermostat and still overheats ... The following fault codes shows up; 27:2 612_14p 4:240 639_14p 241:254 639_14p 2… read more
Andy
Andy
truck /coach technician
Vocational, Technical or Trade School
207 satisfied customers
Sorry Andy I have been trying to communicate but having web
Sorry Andy I have been trying to communicate but having web problems .My VIN is 1htscaam3vh459462… read more
Andy
Andy
truck /coach technician
Vocational, Technical or Trade School
207 satisfied customers
2005 fm1j overheating on pulling up hills I have changed radiator
2005 fm1j overheating on pulling up hills I have changed radiator fan hub thermostat coolant and just rebuilt fuel injectors but still getting hot motor has done 15000 hrs but still goes well… read more
spankyjr1
spankyjr1
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Vocational, Technical or Trade Scho
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chev 2500 hd: I have a 2007 chev 2500 6.6 duramax with 320000
I have a 2007 chev 2500 6.6 duramax with 320'000 I am having a problem with the engine overheating when I am pulling a trailer. I tow trailers 40'000 mi a year. this started right after I had a new ai… read more
spankyjr1
spankyjr1
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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

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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