Hi, I was hoping you'd be able to help me out on this.
We have a 1995 Chevy Silverado 3/4-ton that has been having some major issues as of recently. It loves to stall out in the middle of us driving it and it constantly tries to die on us when it's idling. I have changed the spark plugs (all 8 and one was cracked), replaced the starter long ago, changed the fuel filter, added a fuel cleaner to the gas tank, changed the oil, replaced the oil filter, filled it with entirely new gasoline, and I think there might even be some other things. But, none of those have made a significant difference. After changing the fuel filter it seemed to help it, it sounded perfect when idling but then when we started driving it it died on us. So we are now wondering if it's the Caty Converter. I'm not well versed in the "art" of welding so I can't replace it entirely on my own but I assume there's still something I can do. Any help or suggestions as to what else it might be would help a great deal. Thank you.

 

I would check the fuel pressure. If the filter helped it you may be running out of fuel.

 

Uhm... How do I do that? I'm not a mechanic but I have all the basic tools in the world and if I can figure out what to do I can typically manage it.

 

Catalytic converter won't make the engine die "sometimes". Either they're plugged and causing problems...or not.

I'd connect a scan tool and start reading sensor information along with fuel trim and timing data.

When mine was randomly dying, it turned out the distributor shaft assembly was defective. The magnets get weak and the signal isn't reliable, especially at low RPM.

 

Okay, I'll see what I can figure out with that. Thanks for the input.

 

My '98 K1500 5.7 Vortec was doing that, fainting in the worst imaginable times. It turned out to be the crankshaft positioning sensor.