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if spark dies, (ecu thinks so) it must cut fuel to prevent CRASH on burn as seen on TV>
and by law here.
if spark was good , using can-o-spray test fuel works. see?
does it have spark good on all 8 plugs and firing order right?
and TDC #1 cyl. static timed right? at distributor.
You don't have TBI on that car. You have a drive by wire car. You should have got APP or ETC codes. If the check engine light isn't on and you get no codes at all. Your probably looking at a PCM replacement. Wiring should be checked before replacing it.
With the TBI, the AIC solenoid can get stuck and cause problems. It's on the passenger side of the TBI assembly and should have a four wire harness attached.
I have a 90 chevy k1500 350 tbi with same problem! I have traced problem to... after turning on key fuel pump kicks on when u crank it over injectors shoot gas and truck starts! After few seconds injectors stop spraying and truck dies! This can happen many times over and over! Eventually sometimes truck stays running and all is great! I changed ignition module, oil pressure sending unit (which i was told controls gas after vehicle is running) fuel filter, computer, fuel pump relay, I am at a loss now! Hope this helps and hope someone can help me!
Rob, it sounds like a throttle position switch to me. My 95 suburban with TBI had a similar problem and that fixed it. You may need a volt/ohm meter to rig it if you don't have a code reader that will monitor the values. I think the switch was about $25. Not sure if yours has a TBI or carburetor.
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