Re: cam/crank synch and oil pump drive

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Posted to Technical Discussion Forum on 3/16/2012 8 Replies

There is definitely a sync issue between the ckp/cmp; it should look like this: [2001 Jeep Grand Cherokee Laredo, ECM/Inputs/Outputs Waveform]

As for why: That cam sensor play is an issue, but I would lean towards a cracked flex plate as well. Login to read more.

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