So I am new to this particular forum but have heard and read nothing but good things. So let me see if anyone can assist me over here.

I'll start with some info on the swap. The donor vehicle was a 95 civic coupe ex. With a d16 vtec obd1. I took the motor and tranny and moved them into my 99 civic coupe ex shell. I kept the 99 intake manifold but switch to the 95's throttle plate because there's a throttle cable going to the transmission on the 95's swap that the 99 didn't have. I kept the 99's stock ECU p28 if i recall correctly.

I kept the 99 shift linkage cable AND I'm not sure if this could have caused an issue.

I also used the passenger side axle from the 95 on the 99 civic. Again not sure if that could cause any issues.

The check engine code was P0700 transmission control system... When I read the transmission code I got a (16-01 clutch pressure control (linear) solenoid valve a-f)

What's that mean in English??? B/C the transmission was fine before the swap. So I know it's not a bad transmission.

Now some this was my first swap ever being done 100% on my own and I learned a lot. Mostly things to improve my next swap... For instance I now know I should of mounted the 99 tranny on the 95 motor.... And swapping motor isn't always a cake walk!


Lastly I had a question that could relate. The 99's transmission had 2 solenoids (I'm only guessing there both shift solenoids) and it also had 3 black little sensors. SO in total the installed 95 tranny is missing 1 solenoid and 3 sensors less than the 99's. in which the harness has 4 extra plugs that aren't plugged to anything. Is not having the extra solenoid on this transmission triggering my transmission code?

What's my problem does anyone know?

 

You can't use the '99 ECU, which should be a P2P btw with the '95 transmission, you need a P28, which wont plug into the '99 Civic without a conversion harness (which aren't commonly available for automatics, and when they are they're expensive) Your best bet is to swap the original '99 transmission back in. The base timing between the two engines is different btw, it will never run quite right with the '99 ECU.

 

Okay so my options are as follows?

Option A: find conversion and swap ECU
Or
Option B: swap to the 99 stock transmission

Am I right?

And just to clear things up that would be what is causing my transmission code?

 

yep. or save yourself the bs, and swap a manual trans in.

 

Yes that's correct. If you're doing the work yourself swapping the transmission is going to be a lot more cost effective.

 

Okay so will driving the car cause any transmission issues? Will driving it with the "d4" light blinking cause me to tear up my transmission or anything?

Or will my transmission and car still run decent without swapping anything and just dealing with the transmission code?

Or is driving the civic asking for it?

 

It wont shift right, but beyond that I don't know if it will cause any damage or not.

 

You have been a great help.

I have 1 last question...

I put the 99 civic on the lift today to see if one of my brake lines was leaking. It was so I replaced it... While on the lift I put it into drive and got out and ONLY the driver side tire was spinning. The passenger was not moving at all.

What or why is this? Is that bad or normal?

 

Assuming the car will haul itself it's normal, the diff tends to favor one side if there's no resistance at either front wheel. If it wont haul itself the passenger's side axle isn't seated all the way into the differential.