Today when I got home I went to the garage and decided to test the smoke screw considering the truck was nice and warm. Anyhow I loosened the lock nut and turned the screw two full turns and tested it out. I got a fair amount of smoke, woot! So anyhow I turn it back the original 2 turns and when I'm tightening the lock nut, which is suppose to have 100 ft/lbs of break torque, seemingly stripped itself. I dunno what to say I never even turned it very hard and it seems as if it's just turning and turning. The screw itself seems fine but I dunno. What do I do? Oh and is there a was to tell how deep you have the screw turned by using some form of measure of the screw itself?

Also my O/D has lately been kicking in and out at times as if the TPS is telling it to downshift for a heavyload. That and on top of that the Cruise is gone. So I got figuring, could this all be a vaccum leak? When she's really warm the O/D works great but say if you hit some type of a rut it might kick out. I got underneath and checked the wire off the O/D sylonoid up to the engine to see if something might be chaffing but no, for the most part, the wires are still wrapped in electrial tape. So again, what do I do from here?

 

unplug /clean/and re grease all tpc and trany connections. as for your smoke screw... i have no idea.

 

I've had issues with my VSS (vehicle speed sensor) in the past. If it gets any grease/oil in or around it, it causes the speedo to jump aroung, the cruise not to work, and erratic shifting in and out of O/D. You might try pulling it off and cleaning it up with some electric motor contact cleaner...it worked for me. A new one is around $50 if memory serves from Napa. Part number VSS100 or ECHVSS100.

Also could be your TPS adjustment. I just adjusted mine according to these instructions: https://www.dieseltruckresource.com/...n&onlynewfaq=1
She shifted much better when I was finished.

 

Thanks for the info, I'll give these things a go tomorrow and I'll let you know how it goes

 

thats the reason you should leave smoke screw alone, its not very tough plus it really help little to make truck perform better, but to fox it i see two choices #1 replace the screw and nut#2 set it where you think its supposed to be warm it up and fine tune it, then simply add some locktite to the threads. i dont think theres a measure because every one is adjusted to fit the engine, and most engines are differant even among identical ones.