Question about 1995 Chevrolet Blazer

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Car will not say running

Fuel is getting to the engine but not the throttle body. if i put gas in the throttle body it starts right up. i can't give it any gas or it kills

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  • johnpearson1 Apr 20, 2009

    it's a new fuel pump and new wire harness. It has 2 sensors on the throttle body could one of them have anything to do with the problem

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  • Chevrolet Master
  • 3,854 Answers

You may have a bad fuel pump, First thing is to change the fuel filter since that's the cheaper of the two and you can find the filter under the driver's side  inside frame rail.
Once that's been changed and you still have the problem then it's a good chance that it's your fuel pump has gone bad. Try doing a fuel pressure test and there should be a think 44 psi at idle, but please dubble check that it is 44 psi for your blazer.
Good luck and the fuel pump is in the gas tank, if your going to have to change the fuel pump, don't forget to change the wire harness from the frame rail to the pump since you have it apart. The harness is only $12.00 and that's a good investment if the wries are getting brittle and a broken wire will get you to drop the tank again.

Posted on Apr 19, 2009

  • Harvey N Tawatao
    Harvey N Tawatao Apr 20, 2009


    I believe your blazer has a OBD1 system and can you get me some codes to help you.

    On board diagnostic (OBD) was designed on vehicles equipped with electronic fuel injection so you can generally retrieve the codes yourself. No need buying a scanner or running to any parts stores to check the engine light. This system is called obd1 and applies to most vehicles made before 1995 for domestics and 1993 on imports.





    For GM domestic vehicles made before 1995, the diagnostic connector is located under the dash panel by the driver side. To get the CHECK ENGINE codes to flash in your dash panel, use a jumper wire or a paper clip and connect terminals A and B of the diagnostic connector. Turn your ignition key on with engine off and the codes should start to blink.


     All codes should start with code 12 which is one long flash followed by 2 short flashes. This code 12 means the diagnostic system is normal and will repeat itself continuously if there are no trouble codes. Otherwise, code 12 will flash 3 times before flashing the fault codes.



    I hope this will help you get us closer to finding out what is wrong with your jimmy. If your fuel pressure regulator is bad, your injectors will not work or if your have a bad trigger wire also will not activate the injector, even a bad crank shaft sensor will do the same.


    Let's get some code's and go from there, soon well have your balzer running A1. Good luck

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