I have an 86 300 SEL EURO that I bought new in Europe. It was converted to US standards.
About 10 years ago it started stalling at cold idle. It runs ok when emissions is increased, but runs rough and stalls at emissions standards. Injectors, fuel distributers, idle control modules, and cat changed, but still stalls at idle. Runs ok when hot. Also,it sometimes oscillates (RPM) and makes a clicking sound before it shuts off. Any ideas.

Thanks

J D

Only when cold?? Sounds like a temp sensor problem. The temp sensor is responsible for over 25% of fuel mixture. If it is not right, nothing else is either.

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Benzmac:
Donnie Drummonds
1992 500E (very soon I hope :)
1981 280GE SWB
ASE CERTIFIED MASTER AUTO TECHNICIAN
SERVICE MANAGER FOR 14 BAY FACILITY
MERCEDES SPECIALIST 8 YRS
PARTNER IN MERCEDESSHOP.COM

Don:

Thanks for the tip. I will pursue and give you a follow-up report.

Thanks,

J D