ENGINE Rebuild, P0011, P0021 Help!

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If its in limp you should have a code unless it thinks its overheating which you could see at the gauges. The other problem that could be causing you problems is the miscalibration on your vvel sensors. You need to do the .500v setting immediatley after reassembling the engine with the actuators and control shafts set at the propper opening angle. Thee vvel actuators come from nissan with a plastic wedge tool pre installed to set the base position during assembly. Think of it as having to set the opening angle on a throttle butterfly mechanically first and then having to do the .500v setting of the tps sensor to make sure it is also in the correct spot. You calibrated the sensor to the correct voltage but whos to say that one shaft wasnt at 4 degrees and one was at 7 when you did it since it was already fired up with miscalibrated sensors (and probably reused actuators that werent even installed with the alignment pieces anyway) beforehand. Very few shops worldwide actually know how to fully align the vvel actuators on a rebuild without purchasing new ones with the alignment pieces installed

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