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Weird issue with the OCV - misfires on cylinders 2, 4 & 6


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I have gotten this far thanks to the collective mind of these forums but now I am stuck with a situation that is boggling me.

After changing my bypass hose and putting everything back together, I started my 2000 RX 2000 (86,000 miles) and it was idling very rough.

I checked the codes and it was multiple misfires and cylinders 2, 4 & 6 were showing misfires (Codes P0300, P0302, P0304, P0306) so since it was mentioned that the left OCV (the one nearest the radiator) could be the culprit causing all three of these having issues at the same time; I changed both OCVs and cleaned the filter.  I started it up again and all the same codes/misfires.  So, thinking that while probably rare but not impossible that the ignition coils might have all kicked the bucket at the same time, I changed the ignition coils for the cylinders in question.

No change, rough idle and usually stall during start up if I don't give it gas.  Also, if I keep gassing it until it decides to idle on it's own (usually about 2 minutes) then it will stay on and rough idle.

The weird thing that boggled me is that, on a whim, I unplugged the left OCV cable connector while it was running and the rough idle went away....I was like what the heck?  So I plugged the OCV connector back in and the rough idle came back.  I turned the car off and started it up again (with the connector unplugged) and it started up a little rough but very quickly corrected itself and I did not have to press the gas.  No stall and no rough idle.  I checked the codes and this time, NO misfire codes and only ONE code came up - P1663 which is Oil Control Valve Circuit (Bank 2).

So I'm pretty sure its not good to drive around with an OCV unplugged but I am really tempted because I have been wrestling this situation a bit now since I changed the bypass hose.  

Any ideas would be appreciated because I am all out of them.

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