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Related Medium and Heavy Trucks Questions
I have a 2001 mack ch 613 the gear on the accessory drive
i have a 2001 mack ch 613 the gear on the accessory drive for the oil pump has moved over causing oil preasure loss. is there a set screw holding it in place.if not how do i repair … read more
Daniel Wilson
Daniel Wilson
Auto Mechanics 1&2/diesel mech
5,070 satisfied customers
I have 1996 Mack e7 454 engine i have to replace cylinder
i have 1996 Mack e7 454 engine i have to replace cylinder sleeves, the old ones had o-rings on the top this one has no o-rings and they say i'm suppose to use silicone is this right or did the dealer … read more
Mikael
Mikael
Bachelor's Degree
150 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
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Associates
430 satisfied customers
My Dad has a 00 Mack Ch E7 it keeps derating and keeps
My Dad has a 00 Mack Ch E7 it keeps derating and keeps showing multiple codes have replaced several sensors but hasn't helped it runs fine sometimes … read more
Daniel Wilson
Daniel Wilson
Auto Mechanics 1&2/diesel mech
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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
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1993 Mack e7 300 engine looses fuel prime to first filter
1993 Mack e7 300 engine looses fuel prime to first filter have replaced lift pump, spring was brke in old pump but still loosing fuel to first filter … read more
Mike Mcmillan
Mike Mcmillan
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2008 Mack. Driving down road, motor at 200 f, Lightning bolt
2008 Mack. Driving down road, motor at 200 f, Lightning bolt comes on randomly and motor retards. turn key off, then turn back to on position, not starting up yet, Lightning Bolt and ATC icons are lit… read more
Mike Mcmillan
Mike Mcmillan
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It's been sitting up and won't start. New fuel and filters
It's been sitting up and won't start. New fuel and filters but having a fuel problem … read more
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Mack e7 460 blowing antifreeze back thru reservoir tank cap
Mack e7 460 blowing antifreeze back thru reservoir tank cap new thermostat new top reservoir tank and cap. Engine was overhauled a year ago been doing it since we bought the truck shortly after the ov… read more
Roy Belding
Roy Belding
7,582 satisfied customers
I have a 2000 Mack that died in the road and will not start.
I have a 2000 Mack that died in the road and will not start. It has been several months since it has run. I've checked fuel pressure, but doesn't start even on ether. I was wondering how you go about … read more
Mark Patrick
Mark Patrick
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Does the static timing change on mack e7? I took a semi electronic
Does the static timing change on mack e7? I took a semi electronic e7 454 and put a manual pump on the motor set timing at 8 degrees installed fuel pump with timing Mark in the center of the window on… read more
Jeremy
Jeremy
Certified Truck/Bus Technician
Associate Degree
2,740 satisfied customers
Can you help me with the engines Mack produced and the
Can you help me with the engines Mack produced and the differences in them also how to distinguish the difference . Like the E7 to the MP series etc. The date range I would be looking for is from the … read more
Jeremy
Jeremy
Certified Truck/Bus Technician
Associate Degree
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I am changing injection pump on 1995 mack E7 454 engine how
I am changing injection pump on 1995 mack E7 454 engine how do I time injection pump before removal .… read more
tkman55
tkman55
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How do you change bosch fuel injection pump on mack e7 427
How do you change bosch fuel injection pump on mack e7 427 . One of mine is leaking but still runs good. Paul… read more
Wayne
Wayne
Journeyman
Vocational, Technical or Trade Scho
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Hi, we have a mack truck ch 613 e7 engine with the following
Hi, we have a mack truck ch 613 e7 engine with the following problem. While driving the truck after an hour the electrical mal function light goes on and the engine loses power suddenly. we just turn … read more
Wayne
Wayne
Journeyman
Vocational, Technical or Trade Scho
4,023 satisfied customers
mack clr: i have a 1994 mack etech 7 mack it has been cutting
i have a 1994 mack etech 7 mack it has been cutting out on the hyway to get it going i have to turn the key on and off i parked it now it wont start it turns over but there seem to be no power going t… read more
Daniel Wilson
Daniel Wilson
Auto Mechanics 1&2/diesel mech
5,070 satisfied customers
i have a 1994 clr with a v mack engine engine shuts down intermitently
i have a 1994 clr with a v mack engine engine shuts down intermitently fault code 54 i have to turn the key on and off to get it going again and sometimes the engine revs on its own i have to turn it … read more
Daniel Wilson
Daniel Wilson
Auto Mechanics 1&2/diesel mech
5,070 satisfied customers
My Oil LevelI going Up on my dip stick And My Antifreeze Looks
My Oil LevelI going Up on my dip stick And My Antifreeze Looks Like a Wiskie bColor To It But Nether Smell Likre Deisel What Might it Be… read more
Cat Man
Cat Man
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Meet the Experts:

Daniel Wilson

Daniel Wilson

5,070 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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