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1997 oldsmobile aurora

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hi im new to this just bought a 1997 olds aurora with 98k miles 4.0l V8 went out to start it this morning and it started fine walked back to the house for about 5 mins walked back out the car was not running, started idled like crap spit and sputtered then died, started it back it mellowed out then threw codes p1350,p1375,p1377 never owned a gm product before I don't know where to even to start or look

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From the GM service manual:

1350 Ignition control system

1375 IC 24x reference circuit high voltage

1377 IC cam pulse to 4x reference pulse

Sounds like the IC system module is acting up...or bad ground or such. Wait and see who else chimes in. Not common codes.

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