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Automotive HD/Fleet Forum

Professional automotive forum for discussion of heavy-duty trucks, buses and other on- and off-road equipment, and maintenance of automotive fleet vehicles. Discussion topics include fuels and lubricants, hydraulics, performance, on-board diagnostics, powertrain, power distribution, anti-lock braking and stability control systems, and best practices as they relate to heavy duty and fleet maintenance. This forum is for experienced automotive repair professionals only, membership required.

Continue to the description of our next automotive discussion forum, the HVAC Forum.

Recent Automotive Discussions in the Automotive HD/Fleet Forum

Resetting turn signal relay on Ford Super Duty
12/13/2018 in the HD/Fleet Forum
2011- 2017 Ford Super Duty tripping body control module for truck or trailer turn signals, left or right. We are a fleet company with several hundred super duty truck, most used on right of way for pipeline construction. I have reset many trucks in our sh...
1998 international 3800 DT466E no start
12/12/2018 in the HD/Fleet Forum
[Driveability: 98 International 3800 7.6L] 1998 international bus DT466E starts up great when cold no codes ipr desired/actual matches plenty of power after running approximately 10 minutes idle, revved up, or under load the engine will shut down and won...
2010 Ford F650 6.7L Bus new problem Speed Control
12/10/2018 in the HD/Fleet Forum
Hello Guys, I just got some help to fix the doors from you guys. Thanks. I know need to fix the Cruise control or as they call it Speed Control. I do not have the Powertrain/Emissions manual which seems something I'll want to get at some point. We have th...
2010 Prostar With Cat Engine
12/06/2018 in the HD/Fleet Forum
Service writer handed me an R/O today for regen issues on a 2010 prostar. I was pretty amazed to see it had a cat ACERT engine. Has anyone else ever seen one? I’ve worked for international dealer since 2009, and have never even heard of such a thing....
Excessive Diesel Fuel Conditioner
12/06/2018 in the HD/Fleet Forum
E-Zoil Diesel Aid. The entire 8 oz bottle went into a 55 litre tank of a 1992 yes '92 Jetta TD. I did it. Reccomended dose says 8 oz to 120 US gallons for gel or wax. This little bottle looks like a one shot. I guess it is kinda a one shot for big truck t...

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