This might be of help if anyone is experiencing stalling when hot: although this was not a problem on a G the advice holds good for all Bosch mechanical injections on 280ge and 300ge which have the same injectors.
My 124 300e was stalling after being started again when the engine was at normal temps. I would start first time and immediately stall out without a largish amount of throttle. Otherwise it was running fine with no other problems. It would even stall when stopping at a stop sign in drive. Within a few minutes of revving the engine it was fine again only to repeat the processes the next time it was hot started. My local Mercedes guru here in Miami immediately suggested sticking injectors and recommended a cleaning with stuff mixed into the gas (a fluid which is also used in machines to clean injectors – Seafoam brand) Even after ½ a tank of fuel it was improving so I guess it was sticking injectors and they were less than 15,000 miles old too.
My 124 300e was stalling after being started again when the engine was at normal temps. I would start first time and immediately stall out without a largish amount of throttle. Otherwise it was running fine with no other problems. It would even stall when stopping at a stop sign in drive. Within a few minutes of revving the engine it was fine again only to repeat the processes the next time it was hot started. My local Mercedes guru here in Miami immediately suggested sticking injectors and recommended a cleaning with stuff mixed into the gas (a fluid which is also used in machines to clean injectors – Seafoam brand) Even after ½ a tank of fuel it was improving so I guess it was sticking injectors and they were less than 15,000 miles old too.