EEkkk! Finished Swap! problem... - Honda Prelude Forum

LudeDrew · 09-03-2002, 01:43 AM

I just finished my swap and was installing the jdm p13 ecu when i noticed that the plugs on the ecu are different....is it supposed to be like that? and...is my ECU an automatic ECU? the serial on it is :

37820-P13-J50
556 J-AT <---- is that Automatic? my ecu has something
similar but it says MT.....

what would happen if i ran my car with my USDM H23A ECU until i got a new ecu?

4bidden · 09-03-2002, 01:44 AM

just plug it in and see what happens. the other plug could be the 4ws plug or whatever.

if all else fails, yes you can run with the p14 until you get a p13 in there.

SiLudeH23A · 09-03-2002, 09:06 AM

on the p14 it wont switch to vtec will it?
tyler

4bidden · 09-03-2002, 09:37 AM

nope

LudeDrew · 09-03-2002, 05:56 PM

if i leave the 4ws plug unplugged will i throw codes?

Absolut · 09-03-2002, 06:06 PM

The 4WS system is NOT controlled by the ECU.

There isn't any 4WS connectors on the ECU.

The 4WS is controlled by its own computer in the trunk.

An AT ECU will not work on a MT car.

I think that answers your questions about 4WS.

And yes, you can use your Si (P14) ECU in the meantime, you just wont have VTEC.

yellowh23a · 09-04-2002, 12:06 AM

My JDM h22 came with an automatic ecu, a friend of mine converted it to a manual ecu. Only took him about an hour, he also installed a spoon chip. You can run the car with your p14, but the fuel/ignition more than likely differs from the p13 ecu, so I would not run the car hard, wouldn't want to break anything. There are obd-1 p13 ecu's on eBay all the time, may want to check there. You could probably sell your AT p13 on ebay to help pay for the new one... just a thought.

-Mike

LudeDrew · 09-04-2002, 01:29 AM

so then my ECU is a automatic ECU? i just started the car today with the ECU installed...didnt do anything except blip the throttle a few times then turn the car off...sounded normal.

LudeDrew · 09-04-2002, 01:32 AM

btw, i just left the 4th plug unplugged....

i do have a check engine light on, but i have not hooked up my VTEC wires yet. so i was assuming it was then since i havent checked the codes yet...

anyone know if my ECU is an automatic for sure?

Absolut · 09-04-2002, 10:21 AM

What code is it throwing?

otime12 · 09-04-2002, 10:29 AM

Quote:

Originally posted by yellowh23a
My JDM h22 came with an automatic ecu, a friend of mine converted it to a manual ecu. Only took him about an hour, he also installed a spoon chip. You can run the car with your p14, but the fuel/ignition more than likely differs from the p13 ecu, so I would not run the car hard, wouldn't want to break anything. There are obd-1 p13 ecu's on eBay all the time, may want to check there. You could probably sell your AT p13 on ebay to help pay for the new one... just a thought.

-Mike

how come ur sig says no v-tec? if u have a jdm h22?

LudeDrew · 09-04-2002, 01:58 PM

i just swapped a jdm h22a by myself....checking codes today

LudeDrew · 09-04-2002, 04:07 PM

i checked my engine codes...i am getting codes:

15 (Ignition Output Signal) <--how do i fix this?
21 (vtec) not hooked up yet
22 (vtec) not hooked up yet
36 <--- what the heck is this code? i have checked it numerous times... its a 36

LudeDrew · 09-04-2002, 04:08 PM

forgot to mention that when i turn my car on, the idling flucuates.... i did stick my distributer (h23a) onto the jdm h22a...but i didnt set the timing on it...i have no idea what angle it should be at. how do i fix that

influx · 09-04-2002, 04:12 PM

i dont think you're supposed to put the h23 distr. on an h22

LudeDrew · 09-04-2002, 04:25 PM

from all the swaps i have read about that is what they did...is that wrong?