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Thread: 1989 civic code 4

  1. #1

    Default 1989 civic code 4

    I have a 1989 civic lx 1.5l that is throwing a code 4(crank angle sensor) when the engine heats up and goes into limp mode. I have done everything in the troubleshooting flow chart but can't find the sensor and noting is helping. a parts shop can't even find a sensor for me to order. does anyone have any ideas on how to fix the problem?

  2. #2


    I would check the distributor, ECU and the wires on the CKP sensor.

  3. #3


    We replaced the distributor twice checked the wires on the ecu and distributor. Im in the process of taking it apart down to the timing belt because the sensor i need might be under the cover but need to buy new mounts, belts and valve cover gasket before i finish taking it all apart

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