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1989 chevy s10 fuel problem
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Kprice89
Novice
Sep 8, 2008, 5:21 PM
Post #1 of 2
(6610 views)
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1989 chevy s10 fuel problem
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I have a 1989 chevrolet s10 2wd, 2.5l 4 cyl. tbi, 5-spd. I have tried to get it running but have had no success. the fuel injector works and i have replaced the distributor, fuel pump injectoer, fuel pressure regulator, hall effect switch, and it still wont put any fuel into the throttle body. also i bought a computer from the junkyard but that didnt work. I have no clue where to start now. before this happened my coil fried and i replaced it but this happened two days later.also im getting fuel all the way to the injector. i have hooked up a power wire to the injector and it works that way. the wires leading to the injector wont give a power signal when tested with a noid light. can anyone help me?
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DanD
Veteran
/ Moderator
Sep 9, 2008, 2:40 AM
Post #2 of 2
(6598 views)
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Re: 1989 chevy s10 fuel problem
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Any time that the ignition switch is in the run or crank position there should be contant battery voltage at the injector's red wire. If not check the ECM-B fuse in the underdash fuse panel. Not only check whether the fuse is blown or not but wether there is battery voltage too and through the fuse; you can use a standard 12 volt test light for this. Why I say use a test light is for the fact that a test light will apply a small amount of load on a circuit and if there's a bad connection this small load may cause it to go open and show you that there isn't constant battery voltage getting to the injector during cranking?
The way I look at it; if there's enough current to keep a test light lit during cranking then there's enough to run whatever device that is on that circuit.
One last thing too remember; any electrical device requires battery power & ground to opperate. In this case the ignition switch supplies the battery positive voltage and the ECM (computer) supplies the ground.
Dan.
Dan.
Canadian "EH"
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