[V8] V8 suddenly running like a coffee grinder above 1700 rpm

[Shiv]

Since it's not your temperature sensors causing the
fault, first change your fuel pressure regulator.

If that doesn't solve it, the cracked knock sensor
could definitely be a factor.  The ECU uses the knock
sensor signal to control timing....bad timing can
cause what you're experiencing.  Even if it isn't
causing the fault, change your knock sensor anyways,
to avoid problems in the future.

Hopefully one of these fixes the problem.  Let us
know.



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