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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.

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Recent Automotive Discussions in the Automotive HD/Fleet Forum

2007 GMC topkick IPC
03/21/2018 in the HD/Fleet Forum
Hi guys We installed a new IPC into this truck. Programmed new dash with SPS. Information says to then transfer pin from SRS module to IPC using tech2. This is to marry IPC and cluster. If this is not done SRS light remains on. The question, what card is ...
1998 Peterbilt 320 Low Power
03/21/2018 in the HD/Fleet Forum
[Driveability: 98 Peterbilt 320 10.8L] 1998 Peterbilt 320 Cummins Allison. Truck has low power. Starts fine. Idles fine. When you take off it seems normal but the engine won't go past 1500rpm. Like it does when it's in park. No code in the dash display (...
Detroit Diesel One Box SCR Outlet Temp sensor thread pitch
03/21/2018 in the HD/Fleet Forum
I apologize for not having VIN info but I don't have access to this vehicle at the moment or I could get this information from the dealer. The owner is on vacation. I'm cleaning the DPF's and servicing a Detroit Diesel One Box system and I'm replacing the...
03/21/2018 in the HD/Fleet Forum
2008 navistar 4300 medic unit. on brake application pulls left the harder you push the more it pulls. front and rear brakes were done on january 2018. everything normal up until monday. we have gone thru brake system and found no issues, the same with sus...
Bobcat 742b Drive problem
03/16/2018 in the HD/Fleet Forum
Recently, I started having a problem with the left side drive of my Bobcat 742B skid steer that I use for snow removal and pushing cars around. The right drive side works normally, small inputs with drive lever give small movement of machine. The left sid...

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