Knock Sensor

Ok...i am getting the code reading 23 for my knock sensor on my 93 si......how important is this to fix and could it cause me to fail emissions testing?

it's a bitch to fix and it could very well cause you you to fail emissions. however, it is really rare for a knock sensor to just fail. but it's easily broken if someone who worked on your engine in that area accidentally broke it. and i would guess whoever that was didnt' even realize it. not sayin that's what happened, but i wouldn't knock it out of contention. how's your car driving? any hesitation under hard throttle?

Ok...i am getting the code reading 23 for my knock sensor on my 93 si......how important is this to fix and could it cause me to fail emissions testing?

Yes it will cause your car to fail emission testing if the MIL (malfunction indicator light or check engine light) is on and its very important that you fix this thing soon. Make sure yor knock sensor is not installed too tight or it will become so sensitive. That means it will send false engine detonations signal to your ECU. That signal causes ecu to retard the timing. Retarded timing causes rich Air/Fuel ratio. and rich Air/Fuel ratio causes high HC (hydro carbon) and CO (carbon monoxide) readings, therefore it causes failure on emission testing and damage your catalytic converter.

Yes it will cause your car to fail emission testing if the MIL (malfunction indicator light or check engine light) is on and its very important that you fix this thing soon. Make sure yor knock sensor is not installed too tight or it will become so sensitive. That means it will send false engine detonations signal to your ECU. That signal causes ecu to retard the timing. Retarded timing causes rich Air/Fuel ratio. and rich Air/Fuel ratio causes high HC (hydro carbon) and CO (carbon monoxide) readings, therefore it causes failure on emission testing and damage your catalytic converter.

:rofl: :rofl: :rofl: :rofl:

too tight will make it more sensitive?

that's the biggest load of bullshit i have ever heard!!!


if it's loose, vibration will cause it to go off... but if you installed it loosely enough to vibrate, the sucker will fall out.


tighten to factory specs, or 25-35in/lbs (normal non structural bolt tension)

:rofl: :rofl: :rofl: :rofl:

too tight will make it more sensitive?

that's the biggest load of bullshit i have ever heard!!!



I think this clown named drift need some help. he said he never heard of an overtightened knock sensor. anyone out there want to help drift and explain him what an overtightened knock sensor could cause.

is this drift the same drift i'm thinkin it is???

long time no see. talk about old school.

he may be an ass but i'd be willing to bet he's one of the more knowledgeable people here. :p

he may be an ass but i'd be willing to bet he's one of the more knowledgeable people here. :poh i did not know "drift is an automotive forum certified ass", thanks for the info. though he was a moredator like you cus he got so many stars on his icon and posted over 13,000 posts.

but i dont see him as knowledgeable cus he said he never heard of an overtightened knock sensors. he could have google it first to upgrade his knowleadge before he made some comments.

oh i did not know "drift is an automotive forum certified ass"

Boytiti, you are the "Automotive Forum Certified Dipshit" for posting that link to your stupid website. Didn't a mod ask you not to post that link a long time ago? Then you answer him with "I really don't know what you're talking about", then you ignore him...what a dork!

http://www.automotiveforums.com/vbulletin/showthread.php?t=328180

Fix your website or quit posting links to it, you freaking dipshit.

Boytiti, you are the "Automotive Forum Certified Dipshit" you freaking dipshit.
Disrespecting and calling people names is violation of Automotive Forum Guidelines. You need to be banned permanently.

Talk to the moderator and tell them about your personal problem. Maybe they can help you.

my apologies to the thread starter.

if ANY of you have problems with anything, take it up with a moderator such as myself. i'll decide who gets banned. disrespecting other members will NOT be tolerated. this is directed to everyone

thread closed.