I have a 93 Astro 4.3 W that will not start unless the system voltage is at least 14 volts. The alternator and ignition module have just been changed. Full tune up on engine was just two months ago. Starter and battery have been checked and are okay. Timing is right on the money, all plugs and wires have been rechecked. I have to either jump it with another running vehicle or hook up a battery charger. Once running, it runs great with no surging or stalling, plenty of power and pickup. The only problem while driving is with the turn signals, they will slow down and stop the longer they are on, even though the voltage meter shows plenty of power (greater then 14 volts). The other lights and accesories work as normal. The engine will refire right away once it is shut off, but if it sits more then one hour, it will need to be jumped again. In the past this engine would fire with only 10 volts of system power, can't figure this one out. Anybody got a clue? Thanks for the suggestions. Blane
I forgot to add that the fuel system pressure is at 60 psi and holds. The fuel filter has also been replaced.
Saturday, January 28th, 2006 AT 10:55 PM