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2002 Chevy impala starts sometimes

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  • #865264
    MattMatt
    Participant

      It will start with no problems sometime and runs perfect then when it won’t start it will crank but won’t fire up

    Viewing 9 replies - 1 through 9 (of 9 total)
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    • #865269
      cj1cj1
      Participant

        Times it doesn’t start try adding fuel to intake(starter fluid spray) just to see if lacks fuel.

        #865283
        Eli GomezEli Gomez
        Participant

          Is the car warn when it won’t start? I used to have a 66 mustang that wouldn’t start because the starter was getting blasted by heat from the exhaust manifold

          #865284
          MattMatt
          Participant

            I have tried that still doesn’t start and I know it has no spark I replaced crank an cam sensors no difference also i think It has no injector pulse

            #865285
            MattMatt
            Participant

              Starter is good it cranks I have no spark and fuel injectors don’t work but then it starts when it wants to lol and I have no security light

              #865291
              cj1cj1
              Participant

                Security light check good. On then off normal operation correct?
                Ever have check engine light or scanned for error codes.

                #865295
                MattMatt
                Participant

                  No codes but I have just noticed the security light comes on but it was on and it started

                  #865323
                  cj1cj1
                  Participant

                    If you have no cam/crank sensors/circuit error codes then likely problem originating in security system since light indicates an error.
                    Suggest go thru the pass-lock security setup sequence, sorry don’t have the procedure, or disconnect battery for a while to see if resetting control module has an effect.

                    #865349
                    RobRob
                    Participant

                      check your fuses and relays mannly to the pcm… but I would check all the fuses both in the cab and under the hud….did you verify that there is no power going to the injectors??? because if your getting no signal to the injectors and no spark… your computer is not sending signal most of the time not getting data from the cam and crank sensor,,, I would check the wireing and check a wireing diagram and see if that shows anything

                      #865350
                      RobRob
                      Participant

                        also is your tac moving when your starting the engine???

                      Viewing 9 replies - 1 through 9 (of 9 total)
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