Question about Mazda MX-5 Miata

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Turns over but no spark to the coil. started as intermittent problem. (happened when hot after driving) Mechanic has indicated that a sensor at the back of the head may be the problem.

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  • David Cundiff Sep 23, 2009

    where is the crankshaft position sensor located on the 1993 Mazda Miata

  • David Cundiff Sep 23, 2009

    Thank you for the help on locating and testing the sensor. Even though the replacement will be tough for an amatuer I think my experience will take me through this. Your help was quick and concise.

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It sounds like your crank position sensor has gone south.

The sensor is located on the back of the cylinder head and is likely what your mechanic is referencing.

You can verify this part by putting an oscilloscope on its output and monitoring the signal while cranking. You should have a nice consistent waveform if it is operating normally. If it is random, inconsistent, or missing altogether, your crank position sensor has failed and will need replacement.


Posted on Sep 23, 2009

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Crankshaft position sensor will cause.

Posted on Sep 23, 2009

  • Nate Stansfield
    Nate Stansfield Sep 23, 2009

    Crank sensor reads crank, then sends signal to module which coil packs are attached to.. Test with an ohmmeter to see if you get crank signal from crank sensor to module. Test module same way.


  • Nate Stansfield
    Nate Stansfield Sep 23, 2009

    Follow the wires from coil pack module and they will lead directly to crank sensor..

    You can go to autozone.com and register for full free online repair manual for your car with everything you could need.


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