the electronic fuel controller on my 84 500 sel just shorted and died. Its a grey market import and the controller was made by 'precision'. I cannot seem to find a replacement anywhere. Any suggestions?

Do you live in an area where smog testing is done?? IF not then disconnect the computer & the wiring to the ADDED in-line injector.

__________________
MERCEDES Benz Master Guild Technician (6 TIMES)
ASE Master Technician
Mercedes Benz Star Technician (2 times)
44 years foreign automotive repair
27 Years M.B. Shop foreman (dealer)
MB technical information Specialist (15 years)
190E 2.3 16V ITS SCCA race car (sold)
1986 190E 2.3 16V 2.5 (sold)
Retired Moderator

Thanks. Unfortunately, SMOG is an issue: Is there a stock part to do this job that I can get my hands on?

Nope! those systems were "cheap" add-ons to pass the EPA requirements 20 years ago in the GREY-MARKET hay-days.

Might try the used parts section here!! Post a request for that part.

__________________
MERCEDES Benz Master Guild Technician (6 TIMES)
ASE Master Technician
Mercedes Benz Star Technician (2 times)
44 years foreign automotive repair
27 Years M.B. Shop foreman (dealer)
MB technical information Specialist (15 years)
190E 2.3 16V ITS SCCA race car (sold)
1986 190E 2.3 16V 2.5 (sold)
Retired Moderator

So this is just an add-on? If I can drive it out of the shop back home I can spend time finding that replacement part. Anything else I need to know about disconnecting?