i have a JDM f22b swap in my car ... it was done before by the last owner. Well the problem i have is the engine check light it On .. i have reset the ecu several times but once i drive for couple of mins it will come back on .. and it will stay on until i reset it again.
Anyways .. i checked the ecu code .. is seems there is something wrong with the knock sensor. I got it checked with my mechanic today .. and after inspecting the engine bay .. we found out that the guy who did the swap used the old H23 harness and Ecu and the knock sensor is just hanging above the oil filter.
It seems that F22b doesn't have a knock sensor in the first place ... anyways my question to u guys is what should i do to get rid of this problem so my engine check light will go .. and what is a knock sensor for .. ?? if it essential where and how can i mount it in the engine.
Any kind of help or suggestion will be appreciated
Originally posted by TruNinja619 knock sensor is a sensor to sense any knocking in the engine...
and when it does... it adjust the timing and the knocking goes away ....
try using a 92-95 F22B1 ECU.... if you have a friend with the same engine as you... try using his ECU.....
thats weird how the previous owner had a Si motor... and decided to downgrade the motor.... most people would get the same engine or do a H22 swap....
the previous owner didnt downgrade...the f22b is an equivalent to the h23. As a matter of fact the F22B motor has a a little more torque than the h23 engine
we can sattle this argument after guys .. can anyone plz answer my question first ... ( BTW i wouldn't call it a downgrade .. F22b is almost the same thing as H23 ... )
is it possible to just unplug the knock sensor from the harness, or will the CEL continue to light up?
Btw, sorry, but it has less torque, the F22 is a 2.2L, with probably a slightly shorter stroke than the H23, but whether or not that detail is correct, it still produces less torque, or a "weaker" torque curve (whichever way you want to look at it) than the H23.
the knock sensor is pluged into the harness .. but its just hanging .. and as i mentioned before the engine check light comes up after i drive for 2-5 mins ..
Well, your best bet to get rid of the light is to replace the knock sensor. You may be able to find a good place in the block to bolt it to as well so that it will actually function properly.
Alternative ould be to go and get a JDM F22B ECU and replace the H23A1 one with it. Since the engine doesn't have a KS th ECU for that engine wouldn't look for one and your problem is solved.
JDM ECU and you'll be perfect. when i swaped my f22b i had the same problwm when i used my h23 ecu so i put it back to the f22b ecu and everythign was perfect. hope this helps man.
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