Nissan 300ZX
Toyota 4Runner
Chevy Avalanche

How do you fix the knock sensor problem on a 1992 Nissan 300ZX or should you bypass it and how?

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Wiki User
July 15, 2015 7:03PM

The Nissan gurus put the knock sensor on the car for a reason. Unfortunately it uses the engine block for the ground and only one wire of the two in the harness is live. The knock sensor is not the easiest piece of equipment to get to so many people either live with the knock sensor being bad or bypass it. Once you get to the sensor, you can clean the engine block and the bottom of the sensor and reinstall. That cures the problem in many cases. The most effective safe way to fix the knock sensor is to replace it. If you want to take your chances you can research knock sensor bypass in your favorite search engine. There are a lot of articles with step by step directions so I doubt the procedure needs to be repeated here.