s52 obd1 probs

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  • evoDRichie
    E30 Mastermind
    • Jan 2010
    • 1743

    #1

    s52 obd1 probs

    ok so it cranks of coarse but no fuel comes out and no spark...

    power is going to the injectors and fuel pump yet neither are working

    no CEL, ive checked all the grounds multi times, chip is not in backwards and spare unchipped 413 is not turning it over either...

    any advice?
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  • BBDirtbiking
    Grease Monkey
    • Apr 2012
    • 323

    #2
    Originally posted by evoDRichie
    Chip is not in backwards.
    Ruled out what I was going to say... As I did that with my car.

    If you don't have spark then it may be a relay... If you had everything but fuel, I'd say the lines were backwards.
    "Bayerische Motoren Werke - freude am fahren."

    Brandon {Current: 1991 318iS, 2007 328i, 2014 X5 xDrive35d | Past: 1992 525i, 1997 528i, 1999 540i}

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    • evoDRichie
      E30 Mastermind
      • Jan 2010
      • 1743

      #3
      lines are off when cranking no fuel comes out ... after testing my whole wiring harness with a multimeter i have come to the conclusion that my crank sensor or cam sensor may be bad... the crank sensor has .39 and i cant get a reading on my cam sensor... how much resistance should they have if any, anyone know? .. also would this cause no fuel /spark, if one of those sensors were bad?
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      • FredK
        R3V OG
        • Oct 2003
        • 14738

        #4
        Yes. If the crank sensor is bad, there won't be any fuel or spark. The crank position sensor should ohm out at around 540 ohms.

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        • evoDRichie
          E30 Mastermind
          • Jan 2010
          • 1743

          #5
          well then i believe it is bad
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          • evoDRichie
            E30 Mastermind
            • Jan 2010
            • 1743

            #6
            Will the bad crank sensor cause no CEL?
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            • 328ijunkie
              Forum Sponsor
              • May 2007
              • 3961

              #7
              ^sometimes yes. And all the motor needs to ATTEMPT to start (I.E. Fire spark/fuel) is crank signal. you could have EVERY other sensor unplugged and it would still start.

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              • samiam3356
                E30 Mastermind
                • Jul 2009
                • 1901

                #8
                Have jumped the fuel pump just to make sure there are no issues there?

                Originally posted by Roysneon
                $5 shipped?
                Originally posted by MarkD
                You are a strange dude, I'n not answering any more posts from you.

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                • evoDRichie
                  E30 Mastermind
                  • Jan 2010
                  • 1743

                  #9
                  Originally posted by samiam3356
                  Have jumped the fuel pump just to make sure there are no issues there?
                  have not planned on doing that today...
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                  • jrdeamicis
                    E30 Modder
                    • Nov 2008
                    • 956

                    #10
                    if you dont have a Cel you either

                    Wired C101 wrong

                    or

                    The ECU is dead

                    or

                    The CEL lamp is out.

                    GO!
                    Past Car : E30 S50 6 Speed 5 Lug 3.73
                    Current : Z3 S50 OBD2 (Smog Legal) 6 Speed BBS RN Dual Ear Diff
                    ___________________________________________
                    BNB Designs
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                    • evoDRichie
                      E30 Mastermind
                      • Jan 2010
                      • 1743

                      #11
                      she lives! CPS was bad... and i guess my bulb for my CEL is just burnt out
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