I have a '92 MB 190E and recently the check engine light came on.
There is not noticable difference in performance, but I would like to
get an idea of what's going on. The car does have the old-school
impulse counter so I have been able to get a diagnosis, but it's
somewhat cryptic. I get 12 pulses and this is the corresponding
trouble code is:
Absolute pressure valves from ELZ ignition control unit.
Does anyone know what this means? Does it mean I should replace my ELZ
unit, or is the problem more likely elsewhere. I would like to know a
bit more before I have someone look at it.