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C12 eng. soeed sensor 1? or 2?

Discussion in 'Heavy Duty Diesel Truck Mechanics Forum' started by JohnnyV123, Oct 19, 2022.

  1. Oct 19, 2022 #1
    JohnnyV123

    JohnnyV123 Bobtail Member

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    Oct 19, 2022
    0
    Hello, I have a no start issue with 1998 C12 in 98KW 900. Can only locate one sensor on (R. Side) of front structure timing cover. Most posts ive seen are calling for one underneath near front of oil pan and one on (L)side of front structure (Looking for engine speed sensor) If im correct that there is only one eng. sp. sensor does anyone know what ohm reading I am supposed to get between what wires? Sorry eng. serial # not available at the moment. Any help would be great, Thanks.
     
    JohnnyV123, Oct 19, 2022
    JohnnyV123, Oct 19, 2022
    #1
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  3. Oct 20, 2022 #2
    Magoo1968

    Magoo1968 Road Train Member

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    Mar 18, 2021
    St Malo mb
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    3E678F4D-EABC-4CC8-9744-81A3CE1872A8.png 0862F6ED-DC9E-474B-A2FF-CDAA5046D326.png
     
    Magoo1968, Oct 20, 2022
    Magoo1968, Oct 20, 2022
    #2
  4. Oct 21, 2022 #3
    bjytech

    bjytech Light Load Member

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    Nov 9, 2013
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    Being a 98 I'm going to guess that it has the 40pin ECM, if this is the case it will only have the one speed sensor, the second one wasn't added till they switched to the 70 pin ECM's and that speed sensor would be down low on the left of the front structure reading off the crank gear.
     
    bjytech, Oct 21, 2022
    bjytech, Oct 21, 2022
    #3
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