when you guys state the engine "cranks". Do you mean the engine seems to ignite but immediately dies thereafter?
I have been noticing my warm engine starts to do this recently. If it doesn't die, it hesitates upon ignition and then maintains the start and rev's high and comes back down to normal. Cold starts are no problem at all. I can get around the warm engine start by gently throttling my gas pedal upon startup.
I've changed my wiring harness at 97K on my 95 C220 to take care of other symptoms and hoped it would solve this one.
I have been reading all about the OVP on this forum and just want to make sure my symptoms are classic OVP before conferring with my local mech. Seems like a very easy change and inexpensive.