Relevant spec info:

2000 Si /w 92-95 SiR swap
OBD2B -> OBD1 conversion w/ 95 Civic ECU

The problem begins after driving for a few minutes. The car sputters when giving gas off the line and shifting gears. Also when coming to a stop it revs down and doesn't stop causing it to stall out and die. It doesn't usually start right away from this point and sometimes gives a muffled howling sound before the stall or when you try to start it soon after. I've read topics of others having very similar problems with diagnostics from bad compression, to poor oil pressure, to faulty ignition switches. The most common "fix" I've read courtesy of RonJ@HT was to clean the IACV, which I did this weekend to no avail. I'm suspicious of the ECU because the highest RPM I can get is ~6K-6.2K (O_o), and I'm pretty sure I remember getting as high as 8K+ with my stock B16A. My check engine light has been on since the swap, so would checking codes be accurate? Does the ECU matter that much?

 

Pull the CEL codes as detailed at the CEL sticky on top.

How old and what brand are the plugs, wires, cap, and rotor?

 

I'll see about pulling the codes in the morning.

Swiped a reman dizzy and wires off of Spoon84, both looked new. Ebay'd a set of brand new NGK G-Power Platinums.

 

Ok CEL codes that came up are:

10 IAT - intake air temperature sensor
12 EGR - exhaust gas recirculation lift valve
41 Primary oxygen sensor heater

 

Do you have an EGR system? If not, you have an ECU that is looking for one.

Is the IAT sensor plug connected? What are the wire colors in the 2P connector?

For code 41, is 7.5A dash fuse 15 blown?

 

I'm pretty sure I don't have an EGR system, but I'm also not exactly sure where to look. from the pic in my Chilton book it looks like it would be relatively out in the open though. The IAT sensor plug also is connected.

I actually reset the computer (via the under-hood fuse box), and the only code that comes up now is 41. Fuse 15 looks fine and is connected.

 

ttt

 

What specific engine and ECU is in the car?

Do you still only have code 41?

 

The engine reads B16A and per the guy I bought it from is out of a 92-95 SiR. I ebay'd the ECU and "95 Civic" is written on the outside. Is there a way to check be sure about origins on either of these? The last time I turned it on 41 was the only code I was recieving.

 

ttt

 

ttt

 

look on the barcode thing on the ecu, right in the middle of a bunch of letters or numbers, and I think seperated by dashes is the ecu code

 

I'm referring to the CEL code. I don't think the info you're referring tells what car the ECU came out of.

 

ttt

 

What numbers are stamped on the ECU? Post a picture.

You can't always rely on visual inspection of fuses. Test installed fuse 15 with a test light as described at the Fuse link in my signature.

 

I broke down and bought another fuse tester, and 15 tested to be OK.

Here is a pic of the side of the ECU. It's from a '92 NOT a '95.

 

ttt

 

ttt

 

You got the wrong ECU. P30 is the ECU for that motor.

 

Even with the OBD2B -> OBD1 conversion it isn't compatible? Is it possible to link that ecu to this engine with my harness?

 

ttt

 

ttt

 

The only way to do what you want is to chip that ECU and burn the stock map on which is more money. It'll be cheaper if you sourced a P30 ECU.