My father gave me his 1990 420SEL, he had his ENG out of his older 420SEL put in to this car I speak of now. THe Problems I am have ing are THe AUX FANS will not shut off. They come as soon as the key is turned and dont shut off until the car is shut off. Also thmy father said that the A/C blows the fuse as soon as the A/C is turned on. I checked the ICV, and the temperture sensor con, tro make sure they where not crossed. They where not crossed. The one prong temperture sensor has the wire broke off. I wrapped the wire around the the prong to see if the temperature gauge would work but it did not move. I dont know if the guy he had 2 put the ENG in did it right, but i could really use some help PLease.