300ce idle dip

[B1GCC]

evening all!!

does anybody elses 4 speed automatic mercedes do this?

after starting engine and driving off, then comming gto a junction or traffic lifts, leaving car in drive, the idle dips to 500rpm and almost cuts out!!! odd i know!!

my haynes manual isnt particularly clear as to where the idle screw is....

so i pose the question What is going on?!?!?!

 

[roofless]

could be a vacuum leak ...check the vac pipes & regeneration valve

 

[meanie]

Check co%.
It doesn't have an idle screw-remove idle valve & clean out with carb/brake cleaner.

 

[B1GCC]

thanks for your suggestions i shall attempt these when the rain goes