My ecu has been flashing the code 23 for a while now (B16a CRX) and I've just let it go. The local wrecking yards won't sell just a knock sensor and I checked the wiring, but the colors wires don't correspond with the chart of the pinouts I printed out from HAsport.

What if I just let it go? What do you guys think?

 

are u sure that its plugged in..?

i remember u posting about this b4

 

and are u physically missing a knock sensor or are u missing the plug.??

 

I'm not sure yet, actually. I haven't located the sensor yet...just wondering if I should even bother with it. I guess I'm wondering if it's causing any damage or hurting performance. Oh, and yeah, I posted about it before

 

yah it advances and retards your timing...........and the sensor is in the back of the block....probably the only one unplugged!

 

yes. lots of performance hurt from no knock sensor if you don't have a computer program that doesn't look for it.... the knock sensor is underneath the second runner on the intake manifold, something of a real pain to get to. knock sensors should be available from all vtec motors, and if the j-yard won't sell it, pocket that mug. haha

 

The knock sensor only works on the lo-cams

 

I'm not sure what you mean by this. Could you explain?

 

i think he means like some ecus that are chipped and the sensors are dissabled

 

Asnwer
Very

 

I'm still wondering...what happens if keep driving without fixing it?

 

if u want a knock sensor i have one 50 ship'd
email me at irev210@importjdm.com

 

If you have a "CEL" for the knock sensor, vtec will not engage. If the Knock sensor is not opperational the ECU/PCM goes into default timing maps and you loose HP/gasmilage.

 

Sirhatchback- I might need it...let me get back to on that. I need to check mine first.

Hybridfiend- I do have that CEL, but VTEC engages just fine (pretty well, actually ) What's the PCM? Thanks.

 

yeah i have a knock sensor code right now too vtec still engages though. i need to get that sensor though i hate CEL's. and i guess that is why my gas mileage is so low


[Modified by rookie2nr, 2:51 PM 9/25/2002]

 

 

bump

 

i pulled the motor im putting into my crx out of the wrecked one today, its also got a broken knock sensor, that bitch is like $90 new, funny thing is i got no code from the ecu, it was still plugged into the harness, it was just broken into 2 peices

 

Dude, IM hyrbridb18 or hybridhatch90.

They're each selling a knock sensor...hybridb18 has one for $25 and hybridhatch90 has one for $35

 

are those im names or names on here? i just tryed both those names on aim and they either didnt work or they are offline...

 

Sorry, they're the names here on H-T. I guess that's why others write PM instead of IM.

 

With out the knock sensor your ECU goes into 'Limp' Mode and you loose HP and Gas millage. You need to check to make sure that its even hooked up right and if so, then find a new one and put that on. Here is a pic of where it is:



What they ment about by computer disable or program disable. Is that you can get your ECU chipped and when doing so. let them know you want the Knock sensor disabled. The ECU will no longer look for it. Therefor you will no longer have the code. Knock sensors are pretty pointless IMO. If you have knock, your going to be able to hear it.

 

with that pic there... can u tell me where the thermoswitch is? i still cant seem to find it when i changed my oil yesterday.. people said its near the oil filter... and i couldnt find it. thanks

 

Guys??????????
What is that other plug right next to the oil filter??
I'm wondering if my sensors are plugged in right..

 

that's the oil pressure switch. The thermo switch is right next to the thermostat.
HTH