# 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:** 4

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**Author:** ![Mike93](https://yyz2.discourse-cdn.com/flex034/user_avatar/forums.speedlife.net/mike93/32/7325_2.png) [@Mike93](https://forums.speedlife.net/u/Mike93)\
**Post date:** [February 19, 2007, 8:41am UTC](https://forums.speedlife.net/t/non-functioning-knock-sensor-what-kind-of-drivability/24767/4 "2007-02-19T08:41:04Z")

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[quote=“elgarvo616,post:2,topic:24767"”]

in my nissan, a bad knock sensor retards the timing and adds fuel. made it slow and get shitty gas mileage. but im not sure whats gonna happen in the SHO

[/quote]

That’s basically what it’s doing…feels out of time, definitely down on power/performance, rough idle, not so good gas mileage (average 20 when it should be 25ish), slow to rev…

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