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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

Sprinter No Start
05/17/2021 in the HD/Fleet Forum
[Electrical: 12 Mercedes-Benz Sprinter 3500 3.0L] Vehicle would not start, did a code scan and then cleared codes, vehicle started right after. Customer claims vehicle has emissions deleted Codes list 15B700 One or more signals sent from control unit N11...
MT-653 Allison Transmission Parts
05/16/2021 in the HD/Fleet Forum
Who carries parts for them. My dealer told me they sold out the older parts to someone and they have not restarted production. Is this true? I need a pan, governor cover & Gasket. Thanks,.
IHC Service Info Purchasing
05/15/2021 in the HD/Fleet Forum
Greetings: Now retired, I am taking on the task of switching cabs and hood on an 2002 S4300 dump truck. Replacement cab is from a 2003 S4300 , southern truck. Other that a good cleaning, the replacement cab is in excellent shape. We removed the new cab la...
Removed rear seats, now airbag light on
05/13/2021 in the HD/Fleet Forum
This is on a 2020 F450, 7.3 gas engine. We remove the back seats on these trucks to install shelfs and haven't had a problem till the 2020 trucks. Anyone know if you can turn the light or system off for the back seats? The codes are B140C:13, B140C:13-8B,...
1964 ih scout
05/12/2021 in the HD/Fleet Forum
Does anyone recall wiring diagram for old delco alternator with external regulator? Black 4 term regulator. Term 1 field, Term 2 r from alt, term 3 ign, term 4 battery sound right? idiot light in series with term 2? I can get it to charge but a bit foggy ...

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