P1391 OBD II 'Intermittant loss of CMP or CKP' ? - Jeep Wrangler Forum

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Old 07-04-2013, 11:46 AM   #1
Join Date: Jul 2013
Posts: 2
P1391 OBD II 'Intermittant loss of CMP or CKP' ?

99 wrangler Sport 4.0L _
new 99jeep wrangler guy here...my jeep hesitates and cuts out very briefly when driving 60-70mph, and today cuttoff when I stopped to check engine. use OBD2 and "P1391" code came up which says "INTERMITTANT LOSS OF CMP OR CKP" what is that?

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