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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

Eaton 10 speed
01/21/2021 in the HD/Fleet Forum
I dont normally rebuilt 10 speeds just switch them out . This one is less than 2 years old pulled drive shaft and you can push in on out put shaft in and play goes away What are the odds of pulling rear plate and repairing with out pulling trany? Drove tr...
F450 oil leak
01/20/2021 in the HD/Fleet Forum
[Engine: 11 Ford F-450 Super Duty XLT 6.7L] This 6.7 F450 has an oil leak at the front side of the engine oil pan, drivers side. There is what looks like a hex plug in the front of the pan pointing forward. I would assume that it has some sort of o-ring ...
N14 no starte
01/19/2021 in the HD/Fleet Forum
We have a 92 Kenworth that's a no start with and a n14 I need a wiring diagram for the computer ECM pretty sure it's not getting power we put a computer in it about a year ago hoping it's not already bad thanks for help in advance.
Cummins CAPS system warning device
01/17/2021 in the HD/Fleet Forum
Doing a very expensive repair on a 2001 pusher motorhome. Engine is a Cummins ISC with the CAPS fuel system. I can go into a lot of detail but short story is debris got into the filter bowel on the the electric transfer pump. This severely restricted the ...
2014 Kenw T270 shifter issue
01/15/2021 in the HD/Fleet Forum
Ok have a 2014 kenworth T270 truck paccar engine allison 2400 trans no parking pawl in trans. Have an issue with the push button shifter,will not go into gear sometimes. Will work ok for 8 months then will not go into gear, push reverse or drive and servi...

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