Question about 1993 Saturn SL2

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1994 saturn 1.9L wont start

94 saturn wiil not start checked injectors with 12 volt test light have power to both wires at all times with key on but will not fire. i poured a little gas in each cyl and it starts and dies please help not familiar with saturns thanks dan

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  • skgreys Oct 02, 2009

    yes i have fuel to the rail but i had to hot wire the fuel pump. my question now is when i hot wired it did it engage some sort of safety or anti theft device? thanks dan

  • skgreys Oct 05, 2009

    thanks for the help found wires chewed up by a pack rat


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Try checking and making sure you are getting fuel to the fuel rail there should be a serator valve on the line on the engine. If you are not getting fuel to it make sure the fuel pump fuse and relay are in good working order. Check and see if you can hear the fuel pump running. If you are not getting fuel to the rails and can not hear the pump running the pump is possibly bad.

Posted on Oct 02, 2009

  • william moody Oct 03, 2009

    No you should not have. There should not be any kind of anti theft device that I know of connected to this part of the harness.

  • Nickolas Bullington
    Nickolas Bullington Sep 20, 2011

    On a '94, there isn't a stock antitheft. That pack rat had more to do with it. Just replace the fuel pump wiring and you should be good to go.


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Check the injector circuit. Here's how injectors usually work: when key is on, they have live power available to them. Key on, the circuit is turned on, so power passes through a fuse to the injector on the power wire. (Check the fuse- it's under the hood, most likely.)
To make the injector "pulse" or spray fuel out, the engine computer will internally ground the circuit for a split second. The injector has a power wire to it from that fuse. Then the ground wire at the injector goes into the computer.

If you have a test light, you can test the circuit. First, clip a test light ground lead to negative battery post. With key on, and the injector connector unplugged, check for battery voltage on the power wire. One of the wires should have voltage and will light up the test light. Now, move your test light lead to the battery POSITIVE post. Have a helper be cranking the engine over while you probe the ground wire-the one that did not light up the test light. If the injector circuit ground is good, the test light will now be blinking. (You are putting voltage into the ground wire to the computer, to check if it is properly grounding the circuit. Every time the light blinks, the computer has grounded the circuit.)
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Check for spark on the side not firing. If there is spark, the injectors on the right side may have a problem in the wiring to them. Older multi port injection systems used a "bank fired" approach: all the injector grounds on one bank splice together before they go into the computer to be pulsed.
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Check your injector circuit. It will also let you know if the PCM is allowing the injectors to energize. Here's how:
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When you get this far, Let me know as I have lots more. I don't want overload you to much.

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