1997 GMC Jimmy Logo

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Rachel
Rachel Posted on Nov 07, 2012
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PO102 and PO340 on 1997 GMC Jimmy - 1997 GMC Jimmy

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  • Posted on Nov 07, 2012
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PO102 = mass airflow circuit low. Means there's a problem with the mass airflow sensor or circuit. Could be the sensor is disconnected, dirty, or faulty. PO340 = camshaft position sensor circuit. Could be ground wire disconnection, camshaft position sensor failed, PCM is failing, or even the crankshaft position sensor has failed. Good luck. Let us know how it turns out.

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emissionwiz

Marvin

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  • Posted on Jun 13, 2012

SOURCE: code PO171, PO102, PO131, PO151 on 2001 GMC Jimmy

Have you checked the fuel pressure, if not do so.

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