jerking truck while shifting

Alright let me try explain better.. Basically, I have 2 issues. The first is when starting from a stop, and the other is during upshifting from 3->4->5.

- truck: 2007 volvo, cummins, 10 spd, eatun fuller. I don't know the gear ratios...

- I often haul 45-48k loads on a flatbed.. if that matters.

- oh, and no.. the jake is definitely off..

Problem 1: starting from a stop, heavy:
While heavy, I *can* start from a stop in 1st, 2nd, 3rd.. But if I start in 3rd, the truck will hop up and down a bit. You can tell this is a strain on the truck.. and I was told that when the truck does this from a start.. it means you are straining the clutch too much and will wear it out prematurely. And so.. I should start in a lower gear.

That said.. I now regularly start in 2nd. But the truck STILL hops a little while my foot is on the clutch pedal.. once my foot is off, the truck settles down and moves along at its nice snails pace. I can then upshift to third pretty easily.

(starting from a stop empty, I can start off in 3rd, and its the same as when I start in 2nd..)

Problem 2: upshifting through low gears
This problem is I think.. me. I don't know if I shift when the RPMs are too high, or to low.. or what. What happens is that AFTER I upshift to the next higher gear, and give it fuel, the truck will.. hop or wobble. Basically, I know I'm not matching something right. but I'm not sure what it is.. or how to fix it. I see lots of trucks doing this.. so I know its not just me. But then some others.. are smooth, you can barely tell they're going through the gears at all. I want to be Mr Smooth like the cattle transporting fellow (sorry, forgot your username atm...).

I was told I'm giving too much fuel, but.. i feel like I'm not giving it much at all. I'm not mashing the throttle down after completing the upshift. just some light pressure.

As I upshift the problem becomes less pronounced.. so, by the time I'm at 5th or 6th, the hop or wobble is mostly gone.

 

I have the same 10spd e/f cummins setup.

I have a feeling you're right about the fuel pedal.. and particularly about not letting it up all the way. I haven't tried that but sometimes I feel like that's what needs to be done. I'll give it some experimenting this week.

 

You're right Trilleth, and I can start out in 2nd, even 3rd. But I wobble while letting the clutch pedal up. Maybe I should let it up faster?

ya jake is off.. generally, when starting from a stop I'm in a populated area, and I don't use the jake "in public", so to speak

 

ya I don't have a problem starting in 1st.. I often do if I'm starting on an incline. doesn't seem like it should be necessary when starting off on level ground, though. but I'll give it a try.

 

ya I thought it might be beceause I was shifting at 1500-1600 for the low gears, and then I remembered I didn't need to.. so I started shifting at lower rpms, progressively higher as i go up the gears, but I still seem to have the hop or wobble after completing each upshift. I'll play with it some more.

 

about 600k