TwinTurbo.NET: Nissan 300ZX forum - Not firing on all cylinders + code 34
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Subject Not firing on all cylinders + code 34
     
Posted by Schepis on June 02, 2008 at 7:46 AM
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Message Ok, so I replaced the detonation sensor, the harness, and I relocated them. Ever since I bought the car, it's been stuck on 5PSI. After going wide open throttle a time or two, the car would start to miss (run on 5 cylinders). I would push the coil pack connectors down (keep in mind they are new as well), and it would go back to 6 cylinders again, but only on 5PSI. So after a two week absence (do to rainy weather), I went to start up the Z. Fire her up, and it's missing. Pulled up all the coil pack connectors, and found out that the bottom left (looking from the front of the car) is the culprit. I swapped that coil pack to another cylinder, and it fired up fine on that cylinder. So it obviously isn't the coil itself. So what next could be the issue? I realize the spark plugs, a compression test on that cylinder, possibly injectors (even though new OEM ones were added about 15k miles ago), but what else? And could this be the reason that code 34 keeps coming back? Keep in mind, this always happened when I went wide open throttle (the miss). Then I pushed the connectors down, and it'd be fine again. Give me your take.

     
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