Purchased this car back in June. Drove appr.15 hours non stop to pick this car up and get home. We started driving this car and the first issue was no power. After a week in the garage and one gutted catalytic converter later ,everything seemed ok until the temp drops below 50. Then the car has no intension of starting and unfortunatly we did not intend on parking it for the winter. So being that I read some of the other threads on similar problem I tried changing the 4 pin controller on the far back driverside of the head. Ofcourse this didn't help. I see two more temp senders of some sort infront of the one I changed. My main Question is where is the best place to start in trying to figure this out. The car cranks real strong(new bat.). Also I am getting fuel to the cold start valve. I got enough fuel in it that after tring to start numerous times and the outside air warmed enough I blew the seem out of the back muffler. Good thing it was not a benz muffler. The ovp relay does not rattle, and it has spark. Help I am desperate the wife is hinting on bringing the car in and throwing me out

. Thanks (1990 300se 3.0 I 6)