Engine knock 3k RPM

[Supra Saiyan]

Is this the right answer??

Code 52 indicates that a knock sensor went bad or it is no longer getting a signal. If your engine is knocking or pinging the ECU will retard timing on its own to compensate, it WILL NOT throw a light. Plus code 52 puts your car into a safe mode, since the ECU isn't getting a reading from the KS it goes into a safe mode where the timing gets fully retarded to keep ya from detonating and possibly doing damage.

Originally Posted by cre

You need to post in one thread when dealing with multiple problems... they may be related.

Alone this thread is tough... BUT, when added to the code 52 and knocking noise you talk about in your other thread it makes a whole lot more sense.

Do some more research on both code 52 and rod knock and how the ECU reacts to both and you'll find your answer.