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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

Trivia Only: What is Alvin Crow singing here?
03/17/2024 in the HD/Fleet Forum
I'm hoping somebody might recognize this. I linked a couple seconds early, it comes at 58 seconds. "He's double clutching that old "(what?) through fifteen gears into high.".
Bulkhead module be programed by after market?
03/15/2024 in the HD/Fleet Forum
[Driveability: 21 Freightliner 108SD 9.0L] Can a bulkhead module be programmed in the aftermarket?
05 Cat C7 injector seal leak?
03/13/2024 in the HD/Fleet Forum
2005 cat C7 engine maybe 25K on engine since out of frame overhaul and fresh Cat injectors. Issue when it sits. One day no issue 2 days it is hard to start and when it starts it blows blue smoke for several seconds and has a miss on 1 or 2 cylinders.The m...
P2002 Recurrence
03/12/2024 in the HD/Fleet Forum
[Driveability: 17 Hino 338 7.7L] Truck has 385000 highway miles. Never had a issue or check engine light until about 1 month ago. P2002 appears, performed forced regen with Hino dXII, back pressure drops to good level, soot level on dash drops from 3 bar...
no reverse
03/06/2024 in the HD/Fleet Forum
93 hyster fork lift has no reverse - any insight would be appreciated...

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