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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

Century sleeper bunk blower no power
06/29/2022 in the HD/Fleet Forum
2016 Century Glider. The sleeper blower has no power it is the 4 wire blower and will operate if power is applied. Has power at fuse box for sleeper behind drivers seat. Were does the blower get its power from? Does the 30amp fuse in sleeper fuse box supp...
no start
06/24/2022 in the HD/Fleet Forum
[Driveability: 09 International 4400 7.6L] Group, I am trying to help one of our other locations with this truck, very happy its not in my shop This truck came in with a failed engine, replaced with a running complete reman. Started and ran fine initiall...
Core DPFs
06/23/2022 in the HD/Fleet Forum
Anyone know someone that buys and had success in selling/scraping old maxxforce dpfs, I have a small collection of Maxxforce 2010 DPF cores and would love to do something with them, I've made lot of calls and contacted many people online but the only DPFs...
Wabco ABS Issue
06/20/2022 in the HD/Fleet Forum
[Brakes: 12 Ford F750 6.7L] Hydraulic Brakes with Wabco Unit, Have code SID 59 SPN 1059 FMI 10 - Accumulator Pressure Sensing Front Axle -Replaced both accumulators and still the code keeps coming back, the front axle will drop low PSI when key off. Turn...
Ford Super Duty 6.7 Engine Brake
06/20/2022 in the HD/Fleet Forum
Has anybody come across a way to make the engine brake default to or set to ON all the time at each key on with out driver action? Our trucks are permanently fully loaded and this feature is rarely utilized. Thanks for any ideas.

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