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I have my swap near done, I have two codes. Crank sensor, and an o2 that i have to wire up. Now My idle sits a little high at like 1500k and stays there when cold. when it warms up it starts to kinda jump from 1600-1700 then down to 1500 and so on and so forth. Would the two sensors i mentiond be to blame for this heart murmer in my idle? and how the heck can i get the idle down (tried the throtle body adjustment, all the way down) any other methods of adjusting? (by the way its a 2000 b18b1 in a 2000 ek hatch) thanks in advance

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Well your crank position sensor might be causing you to be off in timing. Possibly when the sensor goes bad maybe it makes the RPMs go up.

MBDiagMan

I don't see how it could run if the crank sensor were totally dead. The idle is probably effected by a temp sensor or the O2 sensor after it's warmed up. Also check the Throttle Position Sensor adjustment since the engine has recently been apart or installed.

Good luck,