I think the best way to test the OVP is to find a 10 amp fuse(s) you know to be good install on the OVP relay and see what happens on a cold start, then if the start is the same (ie poor) I reckon that proves the OVP is a goner. If the start is good then the old fuse(s) must be bad. Well that sounds logical enough to me!

Mike.

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1990 Euro 190e 2.0l Petrol Now Sold Maybe a w116 280se next