W124 CE300 24 autobox failure

[Dimitris1969]

This morning I checked this morning and I got 30mph at 2000rpm and 20mph at 2000rpm which I believe it's 4th ans 3rd gears . I also tried the gear stick at position 3 and position 4 and it did respond.
What confuses me is the high rpm on the motorway. It should be lower than what I see.
Which switch you are referring to? I was not aware that there are fault codes stored in the obd1 . Mine has the 16 pin obd system.
Are there any schematics that I can download, similar to realoem for bmw,s?

Correction 1500RPM at 30MPH, which I belive its 4th gear. I will try to find an open road to try to get it to 5th (or 4th).

 

[ray_hennig]

Correction 1500RPM at 30MPH, which I belive its 4th gear. I will try to find an open road to try to get it to 5th (or 4th).

Firstly, put the E/S switch into the E setting. That should make gears change up sooner, at lower revs. Mine is in 5th before 50 mph.

From start-up, cold, I expect the first change, from 2nd - it starts in 2nd - to 3rd at about 3500 rpm because the system envokes a cat-cleating programme when cold. That's on mine and it's working as it should. You may not have a cat so may be different.

Yes, the 16 pole diagnostic socket enables one to read and clear codes. You need an LED blink tester. I can give you more details when I haven't spent a day trying to get my fibre connection reinstalled by Orange. After 5 days!!!

And you need the code lists that, again, I can send you when I'm less livid and drunk.

First thing to do is report again with the revs at various speeds so it's clear to my addled brain.

RayH

 

[ray_hennig]

I will try to find an open road to try to get it to 5th (or 4th).

I've just been for a drive. 50 mph at 2500 rpm - 4th gear.

50 mph at around (hjust under?) 2000 rpm - 5th gear.

To recap, this in a 1991 300CE-24 with 722.5 5-speed gearbox.

R