So I finally got my 1992 300E 4Matic to start but it does immediately after starting. I can hear my fuel pumps priming when I turn the key. I tried shorting out pins one and two on my MAS connector and the car stayed running because the fuel pumps didn't shut off but it ran kinda crappy because the MAS wasn't hooked up. Does this indicate a bad MAS? where does the MAS get its fuel pump on signal? which pin? from what relay or sensor? thanks.