Engine continues to run after key removed? S52 OBD1 Swap

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  • GaryJ
    Noobie
    • Nov 2020
    • 10

    #1

    Engine continues to run after key removed? S52 OBD1 Swap

    Just took my freshly swapped E30 for its first drive, strangely when I parked it and removed the key the engine continued to run for about 3-4 seconds before shutting off. I have since drove it around the block 3 three times and the problem persists.
  • cdl723
    Advanced Member
    • Jan 2015
    • 144

    #2
    Who did your C101 wiring? Also, when it dies does it sputter or does it sound like a normal car turning off.

    I ask because if someone wired the ignition switch/switch power wrong, the ECU/ignition could get power to keep the car running until you run out of fuel pressure from the fuel pump turning off with the key.

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    • e30austin
      I waste 90% of my day here and all I got was this stupid title
      • Sep 2010
      • 15382

      #3
      make sure you didn't reverse polarity at the battery junction terminal. make certain the brown wires are going to ground and not 12v source.


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