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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

No start
04/23/2018 in the HD/Fleet Forum
[Engine: 03 Ford F-250 Super Duty XLT 6.0L] We are more heavy truck guys but this showed up as a no start, and no one else can figure this out. So now we are stumped. Question is, has anyone ever seen the camshaft timing peg come out, or be non-effective...
Retorque or not head gasket isc cummins
04/21/2018 in the HD/Fleet Forum
I have this px8 isc cummins which weeps oil through the head gasket. Anyone have any luck retorquing the head bolts to stop this or just plan on head gasket replacement? t.d.p.s. has cited for oil leak. I washed engine off and test drove, very little oil ...
Isuzu NPR Fuel Pressure Issue
04/20/2018 in the HD/Fleet Forum
[Driveability: 16 Isuzu NPR-HD 5.2L] I have a 2016 NPR-HD coming up with codes P0088 Fuel Rail Pressure (FRP) Too High P0093 Fuel System Large Leak Detected Replaced fuel filters Bypassed fuel filter on rail Ran vehicle without filter on engine Getting 8...
Ford 6.7 injector harness and lqa
04/20/2018 in the HD/Fleet Forum
[Driveability: 12 Ford F-250 Super Duty King Ranch 6.7L] This 6.7 blew out the injector due to a broken clamp. This is first one I've seen so got a couple questions. Will the solus ultra with updated software do the injector iqa registration? Also the pl...
MBE 900, Missfire Cylinder 6
04/20/2018 in the HD/Fleet Forum
[Driveability: 09 Freightliner M2 106 6.4L] Have a Freightliner M2 106 with the mercedes MBE 900 engine, Has a missfire, scanner gave me code SPN 1328 FMI 48 ? (Can only find a SPN 1328 FMI 31) -followed trouble shoot, compression test good, Idle speed b...

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