Medium and Heavy Trucks

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I have a 1988 mack cs300 with a 5 speed transmission. It is
Dear Sir: I have a 1988 mack cs300 with a 5 speed transmission. It is locked in 4th gear. Do you have any suggestions on how to get out of gear? The clutch works fine. Thanks. *****: What's the make/m… read more
Daniel Wilson
Daniel Wilson
Auto Mechanics 1&2/diesel mech
5,454 satisfied customers
I have two 1983 international 9.0 liter v8 diesels in my
Hi I have two 1983 international 9.0 liter v8 diesels in my boat it has been marinized by crusader and is rated at 225 hp each. have you any info on these motors? … read more
TomcM28
TomcM28
Owner
Associates
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I am looking to purchase a used 1999 International 7.3
Second Opinion] I am looking to purchase a used 1999 International 7.3 Diesel t444e short school bus to convert into an RV. The bus looks to be in good shape, but needs the rear end regarded for highw… read more
Wayne
Wayne
Journeyman
Vocational, Technical or Trade Scho
15,920 satisfied customers
I am looking to purchase a used 1999 International 7.3
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Mike Mcmillan
Mike Mcmillan
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480 satisfied customers
1996 international 4700 lpx 7.3 dt466 I Have another issue
1996 international 4700 lpx 7.3 dt466 I Have another issue Truck won't start at all dies out when driving Here's the thing fuel filter doesn't have fuel going through it I changed fuel filter I put a … read more
Mike Mcmillan
Mike Mcmillan
Triage Tech/Shop Foreman
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Some of my instrument gauges stopped working on my ex-FedEx
Some of my instrument gauges stopped working on my ex-FedEx 87 Grumman Olson. The large soldered/printered circuit board has a dark spot on the lower left corner … read more
Wayne
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Vocational, Technical or Trade Scho
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14 liter Detroit 60 series spun main bairring. 2007 western
14 liter Detroit 60 series spun main bairring JA: What's the make/model/year of your truck? Engine type? Customer: 2007 western star JA: Are you fixing your truck yourself? What have you tried so far?… read more
Mike Mcmillan
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Where can I find a reduild kit and filter for a power
Where can I find a reduild kit and filter for a power steering pump 493115c91 … read more
Keiphun Sowell
Keiphun Sowell
Owner Brothers Restoration/Troubleshoot
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1,450 satisfied customers
Last night I was on the interstate cruising at like 80 mph.
Last night I was on the interstate cruising at like 80 mph. Evedently my radiator had a leak somewhere due to the over heating light came on and shortly after the truck just starting losing power and … read more
Chris (aka-Moose)
Chris (aka-Moose)
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Vocational, Technical or Trade School
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I have an at545 that used to be behind a ford 370. I have
i have an at545 that used to be behind a ford 370. I have put in a ford 7.3 diesel and a new electric modulator. I need to know EXACTLY the type of electric signal to send to the modulator from the th… read more
Curtis B.
Curtis B.
Technician
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I have a 1988 3/4 ton 5.4ltr diesel transmission went on it.
i have a 1988 3/4 ton 5.4ltr diesel transmission went on it. Will a same size transmisson from gasoline truck fit and will it work with the diesel … read more
Wayne
Wayne
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Vocational, Technical or Trade Scho
15,920 satisfied customers
​ I need an answer from an experienced Detroit Diesel
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Jeremy
Jeremy
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Associate Degree
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I'm considering to convert FORD E-350 Super Duty box truck
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Jeremy
Jeremy
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Associate Degree
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Transmissions F750: Have a 2008 Ford with cat diesel and Allison
Have a 2008 Ford with cat diesel and Allison transmission. Changed fluids and filter. Truck moves in reverse and low gear forward. Won't shift out of low gear.… read more
Jeremy
Jeremy
Certified Truck/Bus Technician
Associate Degree
2,747 satisfied customers
We have a 1988 Ford F Super Duty (I believe F-350) diesel
We have a 1988 Ford F Super Duty (I believe F-350) diesel Truck 7.3 liter. Late week we noticed a Diesel fuel leak coming from the top center (?) of the engine - and running back and dripping on the g… read more
Curtis B.
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Associate Degree
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2006 GMC w4500 5.2L diesel cab over aisin 4 speed auto tranny.
2006 GMC w4500 5.2L diesel cab over aisin 4 speed auto tranny. My question is: what would cause reverse to not work? Also it feel like when in truck is in "D" from a stop it feels as if your starting … read more
Jeremy
Jeremy
Certified Truck/Bus Technician
Associate Degree
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I have a 1998 International 4700 with 7.3 automatic. Motor
I have a 1998 International 4700 with 7.3 automatic. Motor sounds great, starts right up no smoke, turbo whistles but is very, very lazy pulling away, once you get moving it seems fine. Trans fluid is… read more
diesel-tech
diesel-tech
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136 satisfied customers
Im working on a 1982 B-700 Bus with an 8.2 detroit diesel
I'm working on a 1982 B-700 Bus with an 8.2 detroit diesel and an allison 4 speed tranny (AT545 I think) and the tranny slips in drive and reverse, when it's warmed up. Like if you were to come to a s… read more
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Meet the Experts:

Daniel Wilson

Daniel Wilson

5,454 satisfied customers

Owner at DJ Wilson

Cat Man

Cat Man

Cat Engine Expert

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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

Certified Truck/Bus Technician

2,747 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

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All types of Cummins applications

Curtis B.

Curtis B.

Technician

1,806 satisfied customers

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

Chris (aka-Moose)

Chris (aka-Moose)

Technician

462 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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