HARD shift when passing

Dixie Design · #1 Wed, March 18th, 2009, 04:59 PM

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

***Power Hungry*** · #2 Wed, March 18th, 2009, 05:18 PM

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.

Dixie Design · #3 Wed, March 18th, 2009, 05:30 PM

Quote:

Originally Posted by Power Hungry

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!

***Power Hungry*** · #4 Wed, March 18th, 2009, 06:04 PM

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.

Dixie Design · #5 Wed, March 18th, 2009, 06:42 PM

Quote:

Originally Posted by Power Hungry

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

Dixie Design · #6 Thu, April 2nd, 2009, 11:22 AM

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

***88Racing*** · #7 Thu, April 2nd, 2009, 12:54 PM

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

Lars

***Jackpine*** · #8 Thu, April 2nd, 2009, 02:47 PM

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!).

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