the car: 93 civic si hb
the motor: 95 JDM B18C1(using ECU)

a little while ago we threw a JG head, skunk cams and gears and new skunk IM after my buddy bent some valves and craked some valve guides and such after a bad 3rd to 2nd miss shift and since then its been throwing a knock sensor CEL... code 23... we replaced the KS and it stays off for a few minutes then it will come on, especially if we mash on it... what could this be?? what does it sound like?? the motor doesnt seem to be knocking or anything??? and i was looking on the net for trouble codes and i found that there was a page that showed a left and right knock sensor... umm ive never heard of this is this true?? thanks guys!!
Boostinb18

 

check if your KS wire from the KS to the ECU is good

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by boostinb18 &raquo;</TD></TR><TR><TD CLASS="quote">the car: 93 civic si hb
the motor: 95 JDM B18C1(using ECU)

a little while ago we threw a JG head, skunk cams and gears and new skunk IM after my buddy bent some valves and craked some valve guides and such after a bad 3rd to 2nd miss shift and since then its been throwing a knock sensor CEL... code 23... we replaced the KS and it stays off for a few minutes then it will come on, especially if we mash on it... what could this be?? what does it sound like?? the motor doesnt seem to be knocking or anything??? and i was looking on the net for trouble codes and i found that there was a page that showed a left and right knock sensor... umm ive never heard of this is this true?? thanks guys!!
Boostinb18</TD></TR></TABLE>

have you wired in the KS at all to begin with?
The wire should be going to the D3 pinout at the ecu plug.

If you do have the KS wired up, I'm not sure how you have it wired in, but if you're using a 2-wire plug...plugged into the KS, are you sure that the single pin that the KS uses is making contact to the active KS wire thats going back to your ecu? ...hope that makes sense...

Your last option would be to have the ecu reprogrammed with a disabled KS.

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by Katman &raquo;</TD></TR><TR><TD CLASS="quote">

Your last option would be to have the ecu reprogrammed with a disabled KS.</TD></TR></TABLE>

How much would this cost on my p72...

 

are you sure the ecu is still good?

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by flat-blk-HB &raquo;</TD></TR><TR><TD CLASS="quote">

How much would this cost on my p72...</TD></TR></TABLE>

$160 shipped. IM me if interested. thanks.

 

I'm assuming that you fixed the broken parts already. However, check your ignition timing and crank to cam alignment.