Question about 2002 Jeep Liberty

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On 2004 Jeep Liberty's, Chrysler split the year between using 16 tooth and 32 tooth tone wheels. What month does the split occur?

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  • beanzy79 May 28, 2011

    Is there any other way besides the computer to determine this difference, like the block # since the VIN doesn't tell you this info?

  • beanzy79 May 28, 2011

    Thank you for clearing this up for me. Just shows that sometimes you have to dig deeper than the surface information in regards to an engine to see what the manufacturers did to it to make it not exactly the same in all cases.

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  • Jeep Master
  • 1,940 Answers

2002-2004 had 32 tooth tone rings with the NGC PCM, or computer, and 16 tooth tone rings with the JTEC PCM. I believe both were manufactured during the same period, just with 2 different computers, requiring different tone rings.

Posted on May 28, 2011

  • Jeremy Moore
    Jeremy Moore May 28, 2011

    The JTEC is a silver module with three 32-way connectors into the PCM mounted under the hood. The NGC has four 38-way connectors into the PCM.

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