Medium and Heavy Trucks

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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
402 satisfied customers
Im trying to find a trouble shooting code for Rack Position
Im trying to find a trouble shooting code for Rack Position Sensor -Voltage above normal or shorted to high SID 24, FMI 3 … read more
Mike Mcmillan
Mike Mcmillan
Triage Tech/Shop Foreman
Associates
402 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
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I have a 2005 freightliner m2 that the fan clutch does not
I have a 2005 freightliner m2 that the fan clutch does not work on. I have replaced the clutch and the solenoid. I get 11.5 vdc to the solenoid, my temp gauge works fine. What could my problem be? … read more
Mike Mcmillan
Mike Mcmillan
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2000 CH 613 / E7 WITH 6 UNIT PUMPS. ONLY BARELY RUNS ON
2000 CH 613 / E7 WITH 6 UNIT PUMPS . ONLY BARELY RUNS ON STARTING FLUID … read more
Daniel Wilson
Daniel Wilson
Auto Mechanics 1&2/diesel mech
4,737 satisfied customers
Have a Mack e7 427. The fan clutch is locked in and we were
Have a Mack e7 427. The fan clutch is locked in and we were diagnosing it. checked solenoid fine. Went to eck … read more
Keiphun Sowell
Keiphun Sowell
AutoDiesel Technology
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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
Mike Mcmillan
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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
402 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
I have a 1996 mack ch613 with a e7, I went to a fuel station
i have a 1996 mack ch613 with a e7, I went to a fuel station to fuel up and when I went to turn it on it wouldn't start. it cranks but wont start and when I plug in the scan tool it wont communicate a… read more
Daniel Wilson
Daniel Wilson
Auto Mechanics 1&2/diesel mech
4,737 satisfied customers
Got a Mack truck with code SID 231 FMI 8, It starts and runs
Got a Mack truck with code SID 231 FMI 8, It starts and runs at a high Idle but will not accelerate.… read more
Jeremy
Jeremy
Certified Truck/Bus Technician
Associate Degree
4,361 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
Andy
truck /coach technician
Vocational, Technical or Trade School
207 satisfied customers
I have a 2000 pete with a C-12 ESN-2ks11381 the engine fan
I have a 2000 pete with a C-12 ESN-2ks11381 the engine fan isn't working at all. with et i can see the manual fan switch on off is working but the fan output stays off. is there a parameter that is ca… read more
Cat Man
Cat Man
Cat Engine Expert
Vocational, Technical or Trade Scho
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I have a 2000 mack model cx613 and I am having problems with
I have a 2000 mack model cx613 and I am having problems with the fan clutch it does not kick in with the A/C on or when the engine gets hot what do I need to check to get this thing running? Thanks So… read more
Andy
Andy
truck /coach technician
Vocational, Technical or Trade School
207 satisfied customers
2007 INTERNATIONAL 8600 WITH CUMMINS ISM, FAN CLUTCH STAYS
2007 INTERNATIONAL 8600 WITH CUMMINS ISM, FAN CLUTCH STAYS ENGAGED, NEED TO KNOW WHERE RELAYS TO FAN CLUTCH ARE. I ALSO WOULD LIKE TO KNOW WHAT TO TEST, AND WHAT CONTROLS THE ENGINE FAN CLUTCH, I KNOW… read more
Toby
Toby
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i have a 1995 mack dumptruck with the vin number 1M2P267C9VM029858
i have a 1995 mack dumptruck with the vin number 1M2P267C9VM029858 MODEL NUMBER RD588S the owner had fuel issues with it and yesterday it just stopped working the injection pump voltage is looking lik… read more
Daniel Wilson
Daniel Wilson
Auto Mechanics 1&2/diesel mech
4,737 satisfied customers
I am looking for a wiring diagram for a 1995 Mack ch613 fan
I am looking for a wiring diagram for a 1995 Mack ch613 fan clutch system if you have any questions about what I am looking for please call me at 603 674n 5274… read more
Wayne
Wayne
Journeyman
Vocational, Technical or Trade Scho
4,023 satisfied customers
GA-crb Truck- 1999 mack ch600Problem-The fan clutch wont disengage.Thi
Truck- 1999 mack ch600 Problem- The fan clutch wont disengage. Things that have been identified- - there is 12v at the hot lead going to the fan clutch solenoid. The fuse had been blown when first ins… read more
Wayne
Wayne
Journeyman
Vocational, Technical or Trade Scho
4,023 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

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I am ASE Master Truck Certified.

Wayne

Wayne

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

Jeremy

Jeremy

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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

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Curtis B.

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Technician turned service manager on multiple lines of trucks and engines, used in industry.

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Chris (aka-Moose)

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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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