W124 OM603 Tickover

[paddingtonfire]

Evening all, my tickover is at about 500 rpm, and seems a little juddery. Am I able to adjust or is it a computer gizmo that I need to get it plugged into to change it? Any advice appreciated,

Mike

 

[carat 3.6]

Is your rev counter working?

 

[paddingtonfire]

O yes, nothing outwardly amiss... Mike

 

[carat 3.6]

If I remember correctly your idle speed is controled electronicly, do the engine rev's drop when you turn on the air con?

 

[paddingtonfire]

Haha if I had air con lol... No it just seems to settle at around 500 when warm, slightly less when cold...

Mike

 

[carat 3.6]

This web page may help you: http://www.w124performance.com/service/W126/w126CD1/program/Engine/602_603/07.1-105.pdf

The digital tester that is mentioned is one of these: Diagnostic code reader tool Mercedes W 124 201 300E 320 190E E320 300TE | eBay

 

[paddingtonfire]

Thanks for the links, does that gadget cover the 300td as well as the petrols?

Mike

 

[balge]

Hi
had similar problems with my 300TD when I got it, mine had lost the engine speed sensor, which stopped the rev counter, so replaced that, but then I found a duff temperature sender and replaced that - and then I managed to diagnose a duff ELR... After replacing that the car is still working fine three years on.
The doc that carat 3.6 amg posted looks like the paper I used to sort it out, but I didn't need the reader, just a cheapo multi-meter
cheers