300e '92 cold shift issue
 

I have a '92 300e that seems to not want to shift up when cold.
The issue is not wanting to shift up when first driving. Seems to
sort of stick and not want to shift up past 20 mph. If I pull over for say 30 seconds, it runs & shifts 1 - 4 just fine.

If I let the vehicle warm up say for 4 - 5 minutes, or so it has no shift issues.

Could there be a vac leak issue ? Any help appreciated.

That car is designed to do that! MB calls it catalyst warm-up.

Just push the engine higher into the RPM range & it should shift.

Mine is the same, it will not shift at all till it reaches at least 40 C. I just live with it :)

Thanks for the answers. I just did not want to push it if it was something
i needed to have checked out.

Thanks again