engine stalling and tach reading?
 

I have a 1984 500SEL Euro. I love it. Very occassionally, however, it stalls when I am decelerating (usually a rapid deceleration, when I've applied the brake). I've noticed that the tach reading normally drops and holds around 500 rpm, but when it stalls the reading drops to 0 rpm. As I mentioned, it only rarely does this, but it's dangerous and I'd like to get it fixed. Once it went to 0 only for a split second and recovered, and it didn't stall. Is there a single device that prevents the engine from dropping below 500 rpm on rapid deceleration? Please give me some guidance if you can, anyone?

Possibly the deceleration microswitch?

Brian16V

Thanks, Brian16V. I'll check it out.