Ok So I Finished swapping in my H22A4 into my 92 prelude, and everything is running fine and everything except for a fluctuating Idle (probably a vacuum leak)
and my car is overheating!

Now My car overheated when I had my h23 in it as well so I know its something to do with the radiator fan because It doesnt turn on at all even when the temp guage creeps to past half way.

So When I did the swap I made sure to use the h23 hose connector, the connecting pipe that attaches the the top radiator hose to the head.

Now I tried replacing the relay for the cooling fan and that didnt work so the only other thing I can think of is the radiator fan switch

But I dont know where that is located on the motor. Is it the sensor on the connecting pipe?

Also I have a cel (its probably my o2 sensor) its not connected yet but I dont know where the test plug is so I cant read my codes.

Please help!

Thanks alot

-Jason

 

- Isnt the test plug down by your radio wiring harness?

I would check if the CEL's are only the o2 sensor first, because that could make you waste lots less time if a CEL will show you right away.

When I had this problem during h22a swap, it was the relay that you said you replaced.

dunno

 

yea thats exactly what I though it was too, I know its not the thermostat either because Its working both hoses are hot.

This is really shitty, I could definatley use some help plz

 

jump the wires to the fan from the bat. bad fan motor maybe.

 

I doubt it's the radiator fan. My radiator fan has never turned on over the 5 years I have owned it, even when I take it on the track (DEs, not drag racing). If my fans don't come on after 20 minutes sessions of hard driving, I doubt that's your problem.

 

hey i got a fan motor if ya want to get it..

 

bleed the coolant, make sure the radiator isn't clogged.

the idle bounce is probably the FITV

 

It might be your coolant computer. Its located right by the main ecu, its a little black box. You cant miss it. I had mine go bad on me after my swap too.