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Chevy S-10 Fuel injection problem

jeffery030jeffery030 Posts: 1
edited February 9 in Chevrolet
I've been trying to figure this problem out for weeks now so please any input will be appreciated ! 1995 s10 2.2 auto, fuel pump went out so I installed a new one, started right back up and run long enough to warm up then dies. So I checked fuel, compression , and spark. It has it all but wouldn't start. I changed out the computer from identical truck, same issue. I've had the icm tested - good, installed new crank sensor- same deal, a friend told me to check for voltage at the injector- good, now I put my test light on positive post and put it to the pulse side of injector- the engine fires right up and runs normal for a while then dies again. Do the test light to positive - pulse side, it starts again. Any ideas , please!!!???
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