EHhhhhhh! 190E 2.3 is an M102 engine, 4cyl, I have it on my W124. It has an electromagnectic fan not a clutch. It kicks in at 105C give or take depending on year. If its cool enough outside and your radiator is old it will just hover in heavy traffic near the 100C mark and never trigger the fan...annoying as hell.
The fan switch is screwed into the top of the the engine behind the oil cap. If you are going to order a new one make sure you give your vin number so you get the right one. Hope this helps.
88 230E (W124)
98 e420 sport replicas
[This message has been edited by yal (edited 09-21-2000).]