HARD shift when passing
 

Not sure if this is normal or if I should be concerned.

Was heading down a two lane doing 60-65 and went to pass someone. Mashed the gas pedal and my truck dropped down to 2nd for a brief second, high RPMs, and then to 3rd. The transmission shift felt VERY hard, not firm but hard. That normal or should I be concerned?

try it again, you may have been at just the awkward speed to make it think 2nd was okay to go to.... how fast were you going?

Yeah, tried it 4 or 5 times in the hour that I was on the road. Same results. Was running about 60 when I'd drop the hammer.

Maybe that's the 15 rwhp you are feeling from the ud pulleys?

You could go into the gryphon and change firmness setting if you wanted to? Or even the rpm shift point?

Lars

Btw nice specs w/ vids+sounds

A+

I love the shift firmness on normal shifts, it's the downshift from locked 4th to 2nd that's such a firm, hard shift. I hate to mess with the shift points too, other than this one instance, I LOVE everything about the Gryphon! Maybe Bill can chime in when he takes a break from the insanity.

OH and thanks for noticing and commenting on my sig :)

I see Bill and Corey are back. Maybe the Mad Doctor can chip in ;)

What we might do is:

1) Address the Shift Torque reduction on the 4-2 and 3-2 shifts to soften then up a bit.
2) Lower the 3-2 shift point at WOT to eliminate going form 4 to 2 on the downshift.

One or both of those should fix the issue.

Sweet, that something I can do, or do you need to do Bill? If you need to do it, DO NOT rush. I know you have a lot of catching up to do and a lot of other anxious customers. Thanks!

OH, and as a side note, I'm mainly just concerned that it's not "right." Possibly going to cause damage if repeated. If that's not the case, I'm good with it as-is!

I can't say if it's hurting something or not, so I'd just rather not take that chance... ya know? If it's not right, it's not right.

The shift points you can handle. The torque reduction I need to handle.

I'll give you a shout as soon as it's done.

10-4 :thumbs up yellow:

Hey Bill hope you haven't put any time into this issue, seems to have cleared itself up! :thumbsup:

Maybe the pcm or a module had to do some relearning?

Lars

I'd love to have an opinion here, actually, I do, but it's not too helpful. I'm very suspicious of problems that "fix themselves". I think you might experience it again sometime in the future, but until you do, I can't see anything that will help prevent it.

I really liked Bill's opinion that it had to do with shift points or torque reduction. (Of course, why wouldn't I? He's the expert!). :smiley_roll1: And, I would have tried the, "Lower the 3-2 shift point at WOT to eliminate going from 4 to 2 on the downshift." approach.

- Jack

Yah Jack,
I have my suspicions also and maybe adjusting the shift points like you had mentioned or also what Bill had mentioned might be a better solution.

Lars

Well, I kinda figured it'd happen again in the future, I guess more than anything I feel guilty that Bill, in all his business was trying to fit me in too!

Ok, I lied, did it again today :doh:

Better put it back on that to-do list bill, sorry :sigh: