# non-functioning knock sensor= what kind of drivability???

**URL:** https://forums.speedlife.net/t/non-functioning-knock-sensor-what-kind-of-drivability/24767
**Category:** NYSpeed Automotive
**Created:** [February 19, 2007, 5:56am UTC](https://forums.speedlife.net/t/non-functioning-knock-sensor-what-kind-of-drivability/24767 "2007-02-19T05:56:49Z")
**Posts on this page:** 1
**Showing post:** 6

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### Author: ![Pauly](https://yyz2.discourse-cdn.com/flex034/user_avatar/forums.speedlife.net/pauly/32/7493_2.png) [@Pauly](https://forums.speedlife.net/u/Pauly)
#### Post date: [February 19, 2007, 9:28am UTC](https://forums.speedlife.net/t/non-functioning-knock-sensor-what-kind-of-drivability/24767/6 "2007-02-19T09:28:46Z")

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I recall that with a GM you could test those by tapping on the block while running to see if it retarded. dont know if yamaha did the same. i can look it up on alldata tomorrow if ya want mike

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