DD15 won't run

Are you sure rad. is full? Is fuel pump still working?

 

You state BOTH yellow lights came on. The second yellow, the one that isn't labeled, is an emissions system fault indicator. Guess what, you got screwed with the camshaft sensor replacement cause that sensor will not enable the Emissions lamp.

You need to read the fault codes. You can find out how to display them for your model year online. Given your symptoms of the engine starting and then immediately dying I'd be leaning toward a problem with the DPF system. Could be as simple as a Doser injector problem preventing regens.

 

Cascadia shows fault codes. turn the key, read it and post it here.

 

there was only one fault code spn723 fmi 31? no other codes?

 

speed sensor-wire going into driveshaft area where it meets tranny, might give it a look, it wont go if thats unplugged or yanked out

Id even use a paperclip to bypass that particular sensor just for giggles to see if the truck runs..

Another bit for ya, my pal with same rig had sensor take him out...He was dumping too much water on his windshield with the hose while his wipers ran, water took out a sensor that lives up top near the hood/windsheld

Fingers crossed for ya

 

troubleshooting for spn 723 fmi 31

 

you should check sensor supply 5 v before changing sensors. I feel its a wiring issue or something with acceleration pedal .