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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

Clark C500 Y45 forklift di[stick tube
02/23/2018 in the HD/Fleet Forum
Clark C500 serial number Y355-739-2823. Anyone know easy way to get dipstick tube out with engine in machine? Thanks in advance for any information.
Missfire At Idle
02/22/2018 in the HD/Fleet Forum
[Driveability: 07 Isuzu NPR-HD 6.0L] Vehicle misfires after warming up, mostly cylinder 1 than can move to 1 & 3 Repairs Made: head gasket left side, Cylinder 1: coil, injector, injector pig tail, spark plug Looking for a route to go, checked all wiring,...
Freightliner M2 2017 A/C Diagram
02/21/2018 in the HD/Fleet Forum
Good Morning. Please if somebody can help me with a Manual or Diagram of the A/C system under dashboard. Our truck does not cool good. The R134a and the Cabin Filter is OK. But it seems like a blend door or a recirculating is not working. Blower is noisy,...
Dodge 2012 6.7 lacks power?
02/20/2018 in the HD/Fleet Forum
Truck is completely stock, no mods, no dtc's, fuel filter good. Drivers complain of loss of power but makes 40 psi of boost (-14.5 of local atmospheric pressure), fuel pressure actual and desired under a load very close to each other. We have about 500 Fo...
Turbo supplier
02/19/2018 in the HD/Fleet Forum
[Driveability: 00 Ford F-350 Super Duty XL 7.3L] I need to replace the turbocharger on this 7.3 Powerstroke. Who is a reliable supplier new or rebuilt? Any suggestions appreciated. Thanks!

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