Broshot

I've been trying to research this, but I am hoping you guys can point me in the right direction. My brother went out and brought, what he was told, was an engine for a 2000 Civic to swap into is 96 Civic; No moding or tuning, just putting a newer engine into his care as it was running like crap. We went through the steps, pulled the old motor, got the new one in, but now we are stuck. I told him to do his research, but we completely overlooked the issue regarding the ECU.

We are stuck now because the junk yard doesn't have the original ECU and I am clueless on how we can narrow down and determine the correct model for this engine. I called the dealership, but they are telling me I need to take my old ECU back to the junk yard and have them match it up, not really sure what they meant. Can someone give me a little something to go on to determine how we can find out what ECU applies for this engine?

* Are there identifying numbers on the engine itself?
* Can we just go by the harness (From what I understand we have the ODB2a harness, which was already connected to the engine)?
* Are we completely SOL?

I know we are dummies for not looking into this before, please be gentle in the responses

Hanmin

what motor is it? does it say dohc vtec on the valve cover? You have a few options.

Either go to rywire.com and buy a obd2a to obd2b jumper harness and find the correct ecu for the car.

If the car is a single, you can just locate a matching ecu from the obd2a ecus.

If your cars a dohc, you can buy a obd2a-obd1 jumper harness which I'm selling for 60 shipped=]. and run a p28 and get your car chipped. This option is the best option if it's going to be modded sometime in the future.

need info on what motor it is.

Broshot

Thanks for the quick response. I'm not where the car is to tell you exactly, but I know it is not a Vtec. From what I understand it is just the plain jane base engine, I think the 1.6l/106-hp sohc i-4. Check the link below, this is what it looks like.

http://www.samarins.com/review...e.jpg

Is this enough to go on? I am getting conflicted info and am being told that all I have to do is go get the ECU for a 2000 civic and it will work. What else do I have to consider here? How do I locate matching ECU's? (No, we aren't planning to mod it out, it's just a to and from car. Nothing fancy planned)

Relic1

just below the location where the radiator hose runs into the block(on top), there is a flat plate, on it are numbers and letters. D16Y7 or something like that.
That will tell us what engine you have and from there finding an ECU is fairly easy.

94EG8

You don't need another ECU, '96 - '00 civics with non vtec engines used the D16Y7 engine and a P2E ECU, the only difference is that the ECU and some engine plugs differ between '96 - '98 and '99 - '00. Simply reuse your old distributor, engine wiring harness and ECU and you should be good, its possible i missed some other sensor where the wiring changed but that should be about it.

Broshot

Just as an aside, we left the wiring harness on from the new engine and tried to wire it up and start, no dice. Let me take Relic1's advice and see exactly what type of engine we have. Let me get back to you. Thanks for the help thus far.

davefromPA

you have a d16y7.

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by 94EG8 &raquo;</TD></TR><TR><TD CLASS="quote">You don't need another ECU, '96 - '00 civics with non vtec engines used the D16Y7 engine and a P2E ECU, the only difference is that the ECU and some engine plugs differ between '96 - '98 and '99 - '00. Simply reuse your old distributor, engine wiring harness and ECU and you should be good, its possible i missed some other sensor where the wiring changed but that should be about it.</TD></TR></TABLE>

try this first.

Broshot

OK, so the ID# on the engine is: D03280300A. I've took some pix of the engine install.

http://i438.photobucket.com/al...5.jpg

http://i438.photobucket.com/al...7.jpg

http://i438.photobucket.com/al...5.jpg

http://i438.photobucket.com/al...3.jpg

http://i438.photobucket.com/al...3.jpg

http://i438.photobucket.com/al...5.jpg

I called the junk yard and the guy told me that the ECU should work from 1996 to 2000 engine, that when we swapped the engine should have worked. I don't know. The ECU that was in the car is 37820-P2E-A71 and the guy at the yard says the ECU part number he gave me was 37820-P2E-A92; should the one we have work? As well, the junk yard guy says that mine may have burned out. I don't have a clue. Is it possible that we've wired it incorrectly?

94EG8

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by Broshot &raquo;</TD></TR><TR><TD CLASS="quote">OK, so the ID# on the engine is: D03280300A.</TD></TR></TABLE>

That doesn't really tell us anything, you want the number below that, It should start D16Y something. from the pics i'd say it has to be a D16Y7.


<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by Broshot &raquo;</TD></TR><TR><TD CLASS="quote">I called the junk yard and the guy told me that the ECU should work from 1996 to 2000 engine, that when we swapped the engine should have worked. I don't know. The ECU that was in the car is 37820-P2E-A71 and the guy at the yard says the ECU part number he gave me was 37820-P2E-A92; should the one we have work? As well, the junk yard guy says that mine may have burned out. I don't have a clue. Is it possible that we've wired it incorrectly?</TD></TR></TABLE>

Either ECU listed will work, Its essentially the same ECU, one is just a later revision than the other. as i said before "96 - '98 ECUs have different plugs than '99 - '00 ECUs. Reuse the original engine wiring harness that came with the car, reuse the original distributor that came with the car, swap out any other sensors where the plug is different, reuse the original ECU from the car, everything should then work fine. Your intake air temperature sensor is missing btw, its goes in that hole in the airbox.

Broshot

I'll give it a try, we are going to get at it tomorrow. Thanks for all your help.

Regarding the ID number on the engine, I must have overlooked it, will take a look to confirm.

Hanmin

you should be fine with keeping the same dizzy on there, just find a obd2a p2e thats for a manual transmission. im assuming you have a 5 speed.

94EG8

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by Hanmin &raquo;</TD></TR><TR><TD CLASS="quote">you should be fine with keeping the same dizzy on there, just find a obd2a p2e thats for a manual transmission. im assuming you have a 5 speed. </TD></TR></TABLE>

The distributor changed plug changed from '96 - '98 and '99 - '00, he's already got an OBD2A P2E from what I can tell. Car is an automatic as well, you can see the shift solenoids in one of the pics as well as no clutch resorvoir.

jdmdikk

the best way to solve this problem was what wwas stated b4..keep your 96 engine harness and ecu and you should be alright..if not you will encounter a few problems like fan not turning on or speedometer and tachometer not working or cruise control or taillights..trust me keep your 96 harness or if you dont have 1 ,then get 1..your car wont even read its obd reader plugg so it wont pass emissions

Hanmin

you should be fine with keeping the same dizzy on there, just find a obd2a p2e thats for a manual transmission

94EG8

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by Hanmin &raquo;</TD></TR><TR><TD CLASS="quote">you should be fine with keeping the same dizzy on there, just find a obd2a p2e thats for a manual transmission</TD></TR></TABLE>

Ok, lets try this again. Why would you send the OP out to get another P2E ECU when he already has one. Why would you tell him to buy a manual ECU when his car is an automatic. And why would you tell him he's ok to use the distributor that came with the engine, '96 - '98 distributors have different plugs than '99 - '00. The simplest and most cost effective way to do this is to simply resuse the original ECU, wiring harness and distributor, that way the OP doesn't have to buy anything.

Burnt Toast

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by 94EG8 &raquo;</TD></TR><TR><TD CLASS="quote">

Ok, lets try this again. Why would you send the OP out to get another P2E ECU when he already has one. Why would you tell him to buy a manual ECU when his car is an automatic. And why would you tell him he's ok to use the distributor that came with the engine, '96 - '98 distributors have different plugs than '99 - '00. The simplest and most cost effective way to do this is to simply resuse the original ECU, wiring harness and distributor, that way the OP doesn't have to buy anything.</TD></TR></TABLE>

+1

Broshot

OK, so you agree just reuse the harness from the 96, not the distributor? Is that what we are saying? And, yes, this is an automatic trans.


Modified by Broshot at 11:45 PM 8/27/2008

94EG8

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by Broshot &raquo;</TD></TR><TR><TD CLASS="quote">OK, so you agree just reuse the harness from the 96, not the distributor? Is that what we are saying? And, yes, this is an automatic trans.</TD></TR></TABLE>

Use the harness and the distributor from the '96, the ECU too. you can't use the '00 distributor because it physically wont plug into the '96 engine harness.

Hanmin

I wasnt sure if he had auto or manual, i read through it but forgot.
Wasnt sure what ecu he had, was just clarifying it up for him.
Thought he might have been using the obd2b engine harness. I don't work on ek's much, but I'm assuming it should just plug in anyways.

Broshot

Success! We got it started, however we are experiencing some issues. The car is rev'ing while in park at idle. It rev's up and down. After test driving, fans engaged, but the compressor will not. Any suggestions?


Modified by Broshot at 6:41 PM 8/27/2008

So, earlier we were stuck, but figured out that there was a vacuum issue. I was able to drive it and it runs. NOW, the issue we are having is that D4 is blinking and gears are shifting a little hard and early. Game plan is to take it to a tranny shop and see if they can diagnose and address the issue, unless you guys have any suggestions. Thanks for all your help, you guys rock!


Modified by Broshot at 8:06 PM 8/27/2008

i-brownberry

If you haven't taken it to the tranny shop yet you can fix the tranny problem yourself. What you need to do is adjust the shifter since you swapped the engine, it must be re-adjusted. You need to take off the center console around the shifter and aling the linkage by loosening it and making sure the holes in the link line up perfectly, then retighten it and you should be good to go.