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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

2009 Volvo D13 Stumbling At Idle
09/21/2021 in the HD/Fleet Forum
On our farm we have a 2009 D13 that at idle will almost kill itself. Sometimes it will actually completely die. Running down the road it runs amazing. Attached is a video of what the egr and turbo is doing when this happens. It’s been doing it for tw...
ISUZU NPR/NQR NO COMMUNICATION WITH SCANNER
09/21/2021 in the HD/Fleet Forum
I have this ISUZU N SERIES WITH 4hk1 engine and the problem I am facning is cant communicate with my new LAUNCH PAD 7. I am not getting AUTO MODE with AMT only MANUAL mode is available. The main problem was engine oil mixed with water and water mixed with...
HINO Burner Maintenance
09/17/2021 in the HD/Fleet Forum
2013 HINO 238 approx. 150,000 miles. Showed up with the attached cluster lights on. Is anybody doing this as a maintenance item? If so what is involved in replacing these parts and doing the reset? Is HINO software needed to do the reset? Or is there a ma...
CAN trouble
09/16/2021 in the HD/Fleet Forum
[Driveability: 08 GMC W4500 Forward W4S042 5.2L] Techs, We have this truck with multiple ECM codes U0101 U010C U0294 U0106 and trans U2104 We found and repaired two CAN wires in the harness near engine. These codes will not clear, the charts lead us to t...
2017 dodge 3500 key stuck in switch
09/14/2021 in the HD/Fleet Forum
all ready fixed this just thought i would post for others This one came in on the hook key was hung in switch and would not turn to start. pulled switch square type key . Took small die grounder and cut slots in screws .took switch a part and removed lock...

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