i have a 92 1500 it has a 350 heres the problem
when its parked and i rev it up the rpms slowly drops to zero and it dies or gets close and when im driving it does the same thing but it doesnt die i changed the cap and rotor spark plugs and wires new air and fuel filter and did a oil change anyone know what the problem might be?

 

hard to say could be many things from a bad sensor to bad fuel pressure, try to get your truck scanned for the diagnostic codes... autozone loans vehicle scanners

 

okay ill try that and see what happens the engine light isnt coming on though
will the code still be there or does that light have to be on