W124 Code 26 - Help...

[94Wagenmeister]

..."transmission upshift delay". The problem is I kind of like the tranny not/not staying in second so long in the morning. I understand the engineering that went into this design, but is it necessary? I just take it easy and it smoothly, effortlessly, shifts up. BUT... a code's a code and I'm willing to trouble shoot a little now that I have access to a lift. I need to do a neutral safety switch and a transmission service soon, so I might just add another hour and do my detective work. My guess is it's related to a vacuum leak someplace. But as I said, it all seems to be working perfectly. BTW - I must admit I have a piece of electrician's tape over the CEL, so I go weeks without even thinking about it!

Anyone have any experience with this particular code?

P.S. Until now I have been a 'lurker' here, spending most of my time at that "other" Benz forum.
__________________
Scott in MD/DC
94 E320 Wagon (Just getting broken in)
95 C280 (RIP)
87 190E (Sold)

[Arthur Dalton]

Shift delay is cat warm-up emmissions device.
Most likely suspect is acuator element at trans cable. See if green vac line from SOV holds a hand pump vac.
Archieves has many post on code 26 diagnosis

[94Wagenmeister]

Much obliged! To the search function I go.