Hello! I’m new here with my 1994 MV6 with air conditioning, but without automatic air conditioning and have the following problem: The heating gets a bit warm only with increased speed, although the water temperature is 90 degrees… My questions: – My MV6 only has an additional water pump at the front of the cooler. Should it always run? – Under the balance tank I only have the e-gas. Should there be a 2nd? – Does the normal water pump have plastic wings that can break? I am grateful for any help! Theo