My knock sensor was broken, so I took it to my usual mechanic. He's worked on a lot of Hondas, but I'm his first S2000 he's worked on (done plenty of stuff for me before with no problems).

I bought a replacement (non-OEM) knock sensor that said it was compliant with my car. However the mechanic just called and told me that the sensor was not correct.

He said that the (assumed) OEM sensor he pulled out had a round plug (one pin), and the replacement one had a square plug (one pin). Additionally he said the one he pulled out had was black, and the replacement was green (not sure if that matters, just trying to provide as much info as possible).

However, all the pictures I've see on here seem to show the OEM knock sensor with a square plug (one pin).... Can anyone confirm or deny this?

Anyone have any idea what might be going on? I'm not sure if I bought the wrong sensor or what...

 

The S2000 Knocksensor is green, has a square shaped plug with one pin.
Don't know what sensor your mech has pulled.

 

Whatever your "mechanic" pulled out is not the knock sensor.

 

If he has never worked on an s2k, finding the sensor will be difficult.

 

To my knowledge its the only green sensor on that side of the block. Kinda hard to miss

 

It's easy to find: just go on try to pull out the starter. The part that makes a "crack" noise and breaks is the knock sensor

 

Replaced mine yesterday, and it was almost as frustrating getting a ratchet up there on the sensor as it was to pull my tranny and do my head gasket.


I have a feeling its because i have enormous hands tho and its a tight squeeze.

 

He seemed pretty confident that the sensor he pulled out was a knock sensor... I'll try and get some pics.

I wonder if maybe a previous owner wired in an aftermarket knock sensor or a knock sensor from a different car...? That would suck.

 

OOPS! another one of those "never take yer s2000 to a guy just because he has worked on lots of hondas" scenario. probably pulled out yer oil fill cap.

 

Is it possible that somehow an AP2 (MY06+) sensor and plug got on my car? What do those look like? Anyone have pics?