1990 Chrysler Le Baron engine stalling

I have a 1990 Chrysler LeBaron Cnvertible with the 3.0 V6 engine. I have serious stalling problems. It stalls at stops but will also stall at any speed. The tach goes to zero but some times by putting the transmission in neutral and pumping the gas pedal, it will start but not very often. Once it stalls it will start again sometimes right away, other times its very hard to start. I have no codes. Could it be the fuel pump or some sort of vaccuum problem?



Optional Information:
1990 Chrysler LeBaron 3.0 V6

Already Tried:
Replaced fuel filter and complete tune up
Removed and cleaned throttle body, including the fast idle servo