It is not bad injectors, it is lack of injector electrical pulse, never would all the injectors fail at once. See if you have 12 volts (use a 12 volt probing test light, avail at any auto parts store for less than $5) to one wire of the two wire connector of each injector with the ignition key in run position. If the test shows no hot wire at the injector connectors then check fuses marked ECM1 and ECM2 in the under-hood fuse block. If they are popped then you have a shorted harness or component.
SOURCE: 2002 chevy Blazer hard starting
replace the fuel injectors, that is the likely cause......
to test the injector, take the power clip off the top of the injector, take one wire and ground it to the body of the car, and another form the battery, to the other post on the injector, if you do not hear a pulsing sound coming from the injector it is bad, if you do, then you have a wiring problem.
SOURCE: 1987 Chevy S10 TBI 4cyl 2.5 L will not run. I
Check the injector for 12v on one wire. if good check the other wire for a ground witth the key on. The ground wire pulses from the ECM If you dont have 12v from one wire to the other but you have 12v from one wire to battery ground then be sure the ground wire is good to the computer. If you don't have 12 v at any time check for open hot wire or bad fuse. ADD 12v to the hot wire at the injector. DO NOT add to the wrong wire or you will fry the computer
SOURCE: 1987 chevy s10 2.5l tbi will not start. changed
That eliminates the crankshaft and camshaft position sensors. Have you checked the fuel injector itself for an open winding or stuck valve plunger? There should not be a steady 12 volts to the injector--if good injector, it would be spraying fuel steadily into the throttle body. But at least the engine should try to run if poorly. Take the injector out, dry it off with air, and intermittently apply 12 volts to one terminal while grounding the other. You should hear a click from inside every time you touch 12 volts. If not, replace it. If it does, it may be plugged with debris. Try blowing through it in reverse with compressed air.
SOURCE: 1987 chevy S10 engine idle problem
relace the throtle air idle valve.The temp switch will allso cause this problem.
SOURCE: My 4.3 vortec engine in my s10 blazer won't start
try the ignition module. if it is bad it does not send the signal for the the throttle body injectors to spray feul.
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Ya so I forgot to start with the easiest solution first. The **** injectors fuse was missing. Popped in a new fuse and it started right up.
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