1986 Mercedes Benz 300e

I have the very same problem with my same exact car only I didnt reverse the battery. But the starting cold sputtering and dying all I can conclude is it simply dont like cold weather I have no problems in the summer spring or fall but winter time it gets to the point I have to have my car jumped.I might suggest checking the fuel injectors or other fluid injector parts on the car to see if there is any partial clogs and such.I only bring this up because it seems to me when the fluids in the engine get cold they run thicker then they do warm (im assuming) so perhaps there could be something restricting the fluids would could cause the engine not to run properly until they are partially moved through the engine and warmed up a tad.I by all means am no expert but im just throwing this suggestion out there as it seems possible. And may I ask does your mercedes also have a stalling problem when its idling at a red light or such?

Eddie

Yeah I figured out my problem, after I hooked the battery I burned out the over volt fuse in the poket behind the battery. My car does also do exactly what your describing too, but I dont die at red lights just when im starting on cold mornings, I would love to give my baby some fuel injecters but there like $170 a piece so im going to wait.

I had a similar problem with my 300e, after I repeatedly jump started the car when the battery died. It burnt the fuse behind the battery (behind the cowl). It was just troublesome enough to be a pain, but always got me where it started. A trusted mechanic (after many others tried and failed), led me to that fuse. I perked right after it was replaced. Seems like MB purposefuly hid the thing - as their dealership demanded $100 to do the diagnostic - when apparently this is not an uncommon problem. And they are the ones who ultimately replaced the battery - but not the fuse!