Medium and Heavy Trucks

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Related Medium and Heavy Trucks Questions
I have 2003 mack Mr. Vmac3 system. 6 EUPs. 2 questions.
I have 2003 mack Mr. Vmac3 system. 6 EUPs. 2 questions. Laptop code came up no.3 euro. Swapped eup from another truck same year and engine. Ran better but stumbles at Times taking off. Do the eups hav… read more
Mike Mcmillan
Mike Mcmillan
Triage Tech/Shop Foreman
Associates
414 satisfied customers
Cooling fan wont disengage 2002 mack. 2002 mack rd688s e7
Cooling fan wont disengage 2002 mack JA: What's the make/model/year of your truck? Engine type? Customer: 2002 mack rd688s e7 inline 6 JA: Are you fixing your truck yourself? What have you tried so fa… read more
Mike Mcmillan
Mike Mcmillan
Triage Tech/Shop Foreman
Associates
414 satisfied customers
On my 2006 KW T600 - my fan is on all the time. I have no
On my 2006 KW T600 - my fan is on all the time. I have no power to the A/C clutch, and no power to either a/c pressure switch. I have completely dismantled the wiring harness & fusebox, but it is ok. … read more
Daniel Wilson
Daniel Wilson
Auto Mechanics 1&2/diesel mech
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I had a fan belt break on my 2008 Mack CHU613 Pinnacle and
I had a fan belt break on my 2008 Mack CHU613 Pinnacle and the connected for the fan side control clutch ripped off. I need to know how to rewire without buying the entire assembly. … read more
Mike Mcmillan
Mike Mcmillan
Triage Tech/Shop Foreman
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I'm having trouble with my fan, it runs constantly. I
Hello, I'm having trouble with my fan, it runs constantly. I replaced the fan clutch, didn't fix the problem. Replaced the AC switch, still didn't fix the problem. Read somewhere that it might be the … read more
Daniel Wilson
Daniel Wilson
Auto Mechanics 1&2/diesel mech
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Engine fan wont kick up to high speed on an 05 mack vision
Engine fan wont kick up to high speed on an 05 mack vision think theres 5 wires going to fan hub red has 12 volts green has about 6 volts rest are 0 trying to figure out if hub clutch is bad or sensor… read more
Mike Mcmillan
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Air clutch will not engage. 2007 frightliner m2 engine model
yes i am. I have found no air going to clutch so far is this free?… read more
Jeremy
Jeremy
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2009 Mack CXU 613 with MP8 motor cooling fan remains on
2009 Mack CXU 613 with MP8 motor cooling fan remains on continuously and comes on with no power to the fan and runs when cold or hot and temp only reaches 135 F … read more
Mike Mcmillan
Mike Mcmillan
Triage Tech/Shop Foreman
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414 satisfied customers
X. 2003 mack RD688s e7 etech 350 engine. Will not start, it
2003 mack RD688s e7 etech 350 engine. Will not start, it only cranks. I have eliminated any problem from the fuel tanks. I have a line running from a separate fuel container. I've replaced the Crank sensor and the Engine speed sensor. still no luck … read more
Mike Mcmillan
Mike Mcmillan
Triage Tech/Shop Foreman
Associates
414 satisfied customers
I have 2001 Mack Cx613 1m1ae07y81w010002 cooling fan will
I have 2001 Mack Cx613 1m1ae07y81w010002 cooling fan will not turn on changed fan switch I can ground switch fan comes on. Has apads system on truck … read more
Daniel Wilson
Daniel Wilson
Auto Mechanics 1&2/diesel mech
4,737 satisfied customers
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
1996 Kenworth W900 Fan clutch Problem the high pressure
1996 Kenworth W900 Fan clutch Problem the high pressure switch for my ac is not making the fan clutch come on and the Temp coolant sensor when it gets to 210 or even till 220 fan clutch also does not … read more
Cat Man
Cat Man
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Have a 2000 Volvo Cummins ISM engine.ESN 34956706, Vin 790658.
Have a 2000 Volvo Cummins ISM engine.ESN 34956706, Vin 790658. Only getting 6.8 volts at connector to fan clutch solonoide key on or key off. Can't find any related relays. power seems to be coming fr… read more
Andy
Andy
truck /coach technician
Vocational, Technical or Trade School
207 satisfied customers
there I have a 2004 international 4400 with a dt530 the
hi there I have a 2004 international 4400 with a dt530 the air clutch fan stays engaged all the time. I have power to the solenoid but no ground when I ground solenoid clutch fan disengages. The coola… read more
Andy
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truck /coach technician
Vocational, Technical or Trade School
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I am having trouble getting the fan to turn off on my 2005
I am having trouble getting the fan to turn off on my 2005 international 9400i with an isx engine. Dash fan switch does not exist, so that's not it. (Ex Walmart truck)replaced Horton solonoid. If I in… read more
spankyjr1
spankyjr1
Retired
Vocational, Technical or Trade Scho
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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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2000 379 peterbilt cab blower stopped working suddenly. No
2000 379 peterbilt cab blower stopped working suddenly. No power at resistor. Orange wire on blower motor has switched power. Fuse is good. Any suggestions?… read more
Jeremy
Jeremy
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Associate Degree
2,740 satisfied customers
2005 t 600, wheni turn on the ac button it blows fan fuse also
2005 t 600, wheni turn on the ac button it blows fan fuse also replaced fan clutch selinoid but the fan stays on checked all pressure sensor connections all good , stumped… read more
spankyjr1
spankyjr1
Retired
Vocational, Technical or Trade Scho
420 satisfied customers
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Chris (aka-Moose)

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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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