Let me start out by saying that I'm new to the Honda world. Ok so I had the entire drivetrain swapped in my 2000 Honda Civic DX with an EX drivetrain and now the tachometer doesn't work. I was wondering if getting the tachometer from the EX would solve this problem. Thanks.

 

Is it plugged up? VSS working?

 

Sorry, I didnt realize this thread posted it gave me an error message. How do I check to see if the VSS is working? The tachometer was working just before the swap

 

dx dont have a tach. That would be rpm gauge
Are you talking about the speedometer that tells your how fast your going?
If so then make sure the vss (vehicle speed sensor) is plug in.

If your talking about the tach rpm gauge then check for a lose ground as something might not have been connected. But the dx civic clusters dont have a tach gauge. so your cluster may have been swap alreadys. And tach is on the motor side

 

Yeah I meant that the whole cluster isn't working

 

Did you use a '96 - '98 engine harness?

 

It was an entire drivetrain swap so I'm assuming it was the engine harness that came on the EX. (This drivetrain swap was before I bought the car.)

 

Okay, what I'm hearing is that you don't know much about Hondas and you had someone swap in this engine?

Was it a shop? Then take it back to the person you had to the swap? It should have been in 100% working condition when they were done.

 

Pull the passenger's side kick panel and take some good pics of the ECU plugs. A pic of the distributor plug would also be helpful.

 

Ok I was wrong in saying that the whole cluster isn't functioning. It's just the speedometer and odometer that aren't working. And the drivetrain swap was before I bought the car so I can't just take it back.

 

Did you check the VSS?
YOu should have been able to Google the procedure by now.
http://techauto.awardspace.com/vss.html

 

If a '96 - '98 engine harness was used you will not have speedometer.

 

Yes I've found this link, but I dont know which one is my VSS it doesn't look like that in the picture. And I can't post pictures because I'm not a member yet. But here is a link to the website with photos. Thanks.

http://vss00excivic.webs.com/

 

Upload to Photobucket or whatever place you want then link to the images.
See post #12.
Since you don't know what was done and how it was done pics are pretty much mandatory at this point.

 

First pic is of the VSS.

As far as the other pics I need pictures of the plugs themselves where they plug into the ECU.

 

Ok I uploaded more pics of where they plug into the ECU. There is two of the 32P plugs but the right one is installed, I think because the car only starts with the one that is plugged in, in the picture. Why then is there 2? The VSS on the otherhand doesn't look corroded or anything. I'll pull out the voltmeter and go through the flow chart from http://techauto.awardspace.com/vss.html#Solutions


http://vss00excivic.webs.com/

 

OBD2A harness and ecu in a OBD2B chasis. On the green plug is there fewer wires on the engine harness side compared to it's mate?

Unless the chasis has had the body harness changed to OBD2A you need to change the engine harness and ecu for 99-00 version.

 

Is it possible to solve this with a OBD2A-2B adapter harness?

 

Yes there is 15 wires on the engine side and 22 wires on the ecu side.

 

I don't think so. He has a mix of the two and the adapter harness is to go from one to the other.

So your body harness is as it should be. Maybe 94EG8 will chime back in but the way I see it you need to get an ecu and harness for your chassis' year range.

 

The engine, trans, all wiring, and ecu all came directly out of the 2000 EX and were swapped into my 2000 DX. So I don't understand why the wiring harness would be wrong

Edit: 1996 EX (D16Y8)

 

I can assure you that harness and ecu didn't come out of a 99-00 Civic. The ecu connetions and harness plugs are completely different. What you have is from a 96-98 Civic that was atomatic looking at the harness. I can't see the wires at A8, C15 or D6 to say if it came from a Y7 or Y8.

What ecu you have doesn't show in your pics but again out of a 96-98 automatic.

Edit: It may have been pulled from a 2000 model but it was originally from a 96-98 and someone put it in there.

Double Edit: I also meant to include that loose plug next to the ecu, you're holding it in one of the last pics is the OBD2B ecu A plug.

 

Just as I suspected.

Nope.

They most definitely did not come out of a '99 - '00. It's possible the engine did, but the harness and ECU definitely didn't

Get a '99 - '00 automatic EX harness and ECU.

 

ok looking at the date on the ecu it says 96. And looking at the original engine it has the same obd2a harness as what is on it right now... How do I tell if the engine was out of a 96-98? Then I could just switch clusters and it would work right?

Edit: The original engine has an obd2b harness

 

Date stamp on the head:



No. The clusters are the same, it's the wiring harness that's the problem. Replace the engine harness and ECU with parts from a '99 - '00 EX. I think I forgot to mention it in my last post but the distributor plug is also different between the two and the distributor will need to be changed as well (or you can get an adapter harness, or cut and splice plugs) The only other way to do it is to replace the cabin harness with one from a '96 - '98 and that's more work.