b18crx

i swapped in an itr motor into my 88 crx si. everything is running smooth and no complaints.

the crx harness doesnt have a knock sensor plug for the sensor on the back of my motor--nothing is on the sensor at all. what do i do? i'm running all motor and dont hear any knocking but is this wise? what should i put on the sensor? im running hondata and have it tuned a little rich to be safe. should i get a safeguard?

doublejz

if im reading this correctly, you have to run a wire from the pinout on the ecu to the knock sensor, or don't worry about it. If you have a CEL that you dont want just get the ecu chipped so it won't look for it

b18crx

what do you mean by "CEL"

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by doublejz &raquo;</TD></TR><TR><TD CLASS="quote">if im reading this correctly, you have to run a wire from the pinout on the ecu to the knock sensor, or don't worry about it. If you have a CEL that you dont want just get the ecu chipped so it won't look for it</TD></TR></TABLE>

Kamin

CEL = Check engine light

and as for the knock sensor, a mostly stock engine you wont have to worry about it knocking as long as you are using premium fuel. a replacment knock sensor isnt cheap and most times isnt necessary.

the best advice i can give you is this, if your knock sensor goes off, that means the engine has already pre-ignited or detonated. the damage could have already occured. the best safeguard against this is good tuning.

b18crx

the CEL is a 43. obd1, itr.....any idea what a the 43 is?

doublejz

43 - Fuel supply system

Kamin

43 - Fuel supply system

for future refrence: http://www.hondata.com/techecucodes.html

edit: *****! you beat me!

b18crx

really? Ive used the car for over a year. could it be the fuel pump? what should i check for? anyone know how to troubleshoot this one? to much on the FPR? its set for around 45psi. hmmmmmmm interesting. thought it was the o2 but while tuning, it said the o2 was fine. intrigued!!!!

Kamin

damn turbo slow down lol
first reset the ecu and see what happens.

b18crx

did that a while ago. light came back.

b18crx

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by b18crx &raquo;</TD></TR><TR><TD CLASS="quote">did that a while ago. light came back.</TD></TR></TABLE>

Kamin

ok then, first, fuel filter. when was the last time it was changed?

b18crx

new when i did the swap. around 5k miles ago
stock fuel pump
b&m guage
aem fpr
aem rail
dsm 450 injectors---set with hondata @ stock itr settings

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by Kamin &raquo;</TD></TR><TR><TD CLASS="quote">ok then, first, fuel filter. when was the last time it was changed?</TD></TR></TABLE>

THEredDEVIL

i thought that when the CEL goes off for knock sensor that means its broken and needs to be replaced.
sorry to jack the thread but i got a 95 gsr swap in my si wired up the knock sensor and everything code 23 still comes out. checked for continutiy and wiring and everything ok but light still comes on. i thought that the knock sensor sends a signal to the ecu to tell if its knocking, which is ok it happens minutely sometimes, and when it does knock the ecu in turn retards the timing. and if the sensor is broken then the CEL comes on notifying you that it is no longer working properly and isnt sending a signal to the ecu. thats why there is one wire going to the ecu and one wire to groung its only a signal output device. correct me if im wrong cuz im trying to figure out why i cant get rid of CEL 23. and it doesnt sound like my motors knock and its pretty much stock. hope your advice helps me and others, im confused.