[Jackpine]

I've simply never felt the "shudder", so I have no idea what causes it or even what it is. You said you thought the OD was on (probably so - I'm sure you'd remember turning it off). Do you recall if the Cruise Control was on?

There's a bit of "slop" in the cruise control, where, if coasting down hill and moving faster than the set speed, the TC will be unlocked. Then, as you reach the bottom and level off, the speed will drop which will relock the TC and start to feed in throttle. But, it will probably slow a bit below the "set" speed before this happens. Then, as you start going up again, the TC will probably unlock due to speed reducing again and throttle being applied and that tends to happen after a reduction slightly below the set speed too. If the hill is steep enough, the throttle input to keep the speed up will command a downshift too, and it will then likely speed up to a higher speed than the set speed. All this unlocking, locking and shifting, could cause what you describe as "shudder" I suppose.

I dunno - I tend to think of "shudder" as being similar to the feel you get from a slightly unbalanced wheel. Is this what you're feeling? Or, is it more like the rpm is hunting back and forth as it would do if the TC were locking and unlocking rapidly over and over?

My questions are simply directed at getting a good description of the symptoms to Bill. I really know nothing about fixing "shudder".

- Jack