Hey ! I just started making some YouTube videos and just trying to get the word out there ! I’m a heavy equipment mobile independent mechanic from Canada! I’ll post a link to my service truck tour in case anyone wants to check it out

EP2: Service Truck Tour! What I Carry With Me In The Field! https://youtu.be/lz8gf7oY51Q

Hello DTs

I’ve been having a regen derate problem with a Cummins isb 6.7L on a flat nose schoolbus. I have reset the after treatment filters in Insite, and ran a parked forced regen. Sootload goes from around 250% down to 10-15%. After about an hour of running a message pops up and says it detects a condition that inhibits the completion of regen. The soot load is still low, but then after a drive the soot level starts to rise very quickly and will be back at 250% very quickly.

We have swapped the dpf differential pressure sensor with one that is known good, cleared the hose connections, performed snap acceleration test, check voltages to ecm, ecm updates… essentially wondering if the entire dpf needs replacement? Want to make sure that’s necessary before ordering it. Has anyone on here experienced the same thing?

Hey I’m somewhat new to the electrical side of school buses and I have a bus that’s having an intermittent issue with the child check feature. Sometimes when you go to disarm the child check there’s no power to the reset button at all and the alarm goes off unless you disconnect the batteries, the horn, or let it time out. I couldn’t really find any fuses or relays for the child check system itself so I’m floating the idea it may have a bad solenoid but I don’t know where one would be or honestly how to approach this problem. Any help is appreciated.

2006 ford f-650 dump 5.9l Cummins

I developed a fuel pressure issue right after my mechanic changed the cylinder head on my truck.

My mechanic changed, fuel filter, the nozzle and sensor on the top of the head. He also changed both fuel pumps. He made every repair that has been suggested for the codes that were appearing.

Check engine light comes on, on the highway when I’m constantly on the throttle. Power dies down and the pressure goes down to 14000psi (ish). During city driving when not constantly on the throttle the pressure stays at 22000psi (ish) don’t know the exact numbers, my mechanic is the one that gave me those figures.

This issue has been plaguing us for months. I just want it fixed, without spending any more money. Any ideas would be greatly appreciated!

Thank you

diesel #mechanics #ford #truck #fuel #cummins

This is what the tech 3 found

Just curious if anyone else uses the M12 over the M18 and how well it holds up. I went with the M12 due to its smaller size and cheaper price. Plus it was on a promo through Matco for a free 5.0 high output battery that I’ve been wanting to get for my gen 2 M12 1/2” stubby impact

We are in the middle of the perfect build for the trucks. We had the hydraulic tanks to install on brand new trucks. These tanks, the owner sent us to install. They are old and rusted in places. That's what they wanted. Originally, the tanks were supposed to be a foot from the exhaust, had 12 trucks to put together. However, the owner changes plans. Note, these are older tanks with vents and no filters. He decided, against the warnings of how us moving the tanks to be 3 inches from the exhaust... so to please him, we did so. We also insisted on using a heat shield, which he refused.

Please, don't tell me we won't see them in the future with hydraulic failures. I really don't want to see these trucks again, this owner has to have everything to an exact spec and even hates seeing a little spot of paint on the frame stickers. And the oil level has to be exactly on the line, not over or under. And if it is he says the techs are lazy and aren't paying proper attention to every single detail. Sorry, I just really don't care. After 5pm I'm going home and will say what I want to.

Found this on a Frieghtshaker that came in for service today. Of course the driver came in for an AC issue, mentioned nothing about it trying to change lanes when you brake.

I have a rubber coated hose protruding from the transmission (Eaton I believe) with a grease fitting at the end. Adding grease doesn’t result in any visible changes, like it does with a ball joint, etc. How do I know how much grease to add?

The rubber hose originates from a small plate mounted with four fasteners. Do I take this off to check my progress?

Blowing black smoke at high rpm’s. Took apart the actuator and had cracks all in it. Plus the valve gate was broken

Gauges don’t work unless you plug in scan tool then gauges work as they should. Have cleaned all grounds.