Hey guys,

I'm trying to finish up my first B series swap (B16A2 from a 99Si into my 89 Si) and was hoping someone could help me find some homes for a couple sensors. I am using the stock OBD0 harness on the block. Here are the sensors I'm having trouble with knowing what goes to them...

1) This is on the drivers side of the block on the firewall side, below the timing belt cover. I have no idea what it is/does or what goes to it.


2) I was told this one is my IAT sensor, but have no idea where it goes...


3) These are on the harness on the back of the block...I don't think they are used, but want to make sure.


4) I believe this is the thermostat or fan sensor, but I'm not sure if my stock harness has anywhere to plug into it. This pic was before the engine was installed and I have since replaced the sensor with a non-broken one (and had the block re-welded).


I've tried locating a 99 Si shop manual but haven't had any luck so far. I was planning on cross referencing that with my CRX manual. I did some searching on this forum and the 92+ forum but came up empty handed on the B16A2 diagram.

I appreciate the help! Thanks for dealing with my noob ***!

 

1. cant tell, maybe knock sensor.
2.IAT, your missing the sensor itself on the intake manifold from what it looks like on the pic.
3. Oil pressure
4. Thermo switch

 

Im "pretty sure" on two of these

first one.......no fuckn idea

the second is your intake air temp switch

the two on the third pic.... the one with two wires is your oil pressure switch (mines not hookd up either, wouldnt reach b.c i forgot to go b/t the T bracket....to) and i figured if that goes off your fuked anyways and I dunno what the other one is. The other one in the pic I dunno either

For the forth one Im guessing your right on the fan switch, your messing with the ......obd2 (?) swap so I really dunno

As long as it fires up and rips......*** it right?

gl buddy

 

The one with the black cap beside the oil pressure sensor is the knock sensor.

 

The first one is a sensor only used by OBD-II, you don't need to hook it up.

 

Thanks guys!

 

Shop manual.
http://www.hondahookup.com/manuals/

 

1)- this is the crank angle sensor used on OBDII engines. Older engines havethem built into the distributor

2)- i don't recall, was you car a DX model originally?

3)- that is the hook up plug for your coolent temp, it needs to be modified to fit the plug for the coolent temp sensor found in pic 4 that is positioned in the thermostate housing

4)- see #3