1993 Bonniville won't start
Hello Auto World,
I pulled my 1993 Pontiac Bonniville in the garage cut it off. The next day it would turn over but not start. By letting it turn over for ~ 30 seconds, it will occasionally start. When it does, it runs extremley rough and then turns off. When it turned off it locked up untill I manually turn the motor.
To trouble shoot this I',ve check the fuel pump, I did notice that when I pull the vacum hose from "what I think is the " the fuel pressure regulator, I smell and see gas run out (not sure if this is a problem). I;ve verified the TPS varies 0 to 5K ohms between center tap, my ignition coils measure output Side 5K, Input ~.9 Ohm, ICM measures 8K between terminals.
Over the last few weeks I've fixed a low power issue by replacing the Knock sensor, A rough Idle issue by replacing a coil pack and it ran fine (with a minor idle variation).