[therobesons]

I have a 1990 CRX with a '92-95 motor.

What ECU do I have and what should I have.

The car seems to run fine and gets good mpg so I belive it has the correct ECU but I would like to know what it has.

TIA

Bob

 

[Angry]

There is normaly a white sticker/tag on the bottom side of the ECU.

OBD0-
PM6 ECU

OBD1 (probably what you have)
P28 ECU

The three letter numbers centered off by 2 dashes "-"p28"-"

Hope this helps...

And if you dont know where the ecu is its under the carpet in the passenger floor board.

 

[therobesons]

Thanks, this is just what I was looking for.

Is the p28 what came with the car or was is changed when the engine was swapped?

Bob

 

[SETI20]

It was changed.
Is the ECU hooked up to what looks to be an aftermarket wire conversion harness?

 

[downest]

What engine do you have?

 

[therobesons]

92-95 civic 102 hp.

I have seen the ecu yet to see what it is or how it is hooked up, may in the morn.

Bob

 

[downest]

With the B7 you don't need a P28, if that's what you have. You could probably sell it for some cash since it's desirable and get the correct ECU for the engine (I would definitely be willing to trade you!).

 

[ollie]

If its the B7 you probably have a PO5..Give a look and let us know.

 

[Baker]

Thanks, this is just what I was looking for.

Is the p28 what came with the car or was is changed when the engine was swapped?

Bob

The P28 ECU is from a 92-95 Civic Ex/SI.
Your motor, from the hp rating that you gave, sounds like it is a d15b7, which is from a 92-95 Civic Dx.

 

[greasemonky89]

stock 1988-91 civic or crx si ecu is the pm6

if it has a 92-95 civic engine it can either be a:

p28
p06
p08

 

[ludesrv]

It's probably safe to say that the stock D series was pulled and the D15B7 was thrown in it's place, keeping it OBD0. You more then likely are running the PM6 ecu. Nothing wrong with that for a SOHC non-vtec.

 

[mrspeaker1]

maybe he even has the stock HF ecu still in there, seeing how he's getting 50mpg..