D15Z1(Civic VX) Problems into DX Hatch - Fuelly Forums

Click here to see important news regarding the aCar App

Thread Tools Display Modes
Old 04-09-2010, 01:17 PM   #1
Registered Member
Join Date: Apr 2010
Posts: 1
Country: United States
D15Z1(Civic VX) Problems into DX Hatch

Hey, I was sent here from another forum to further inquire about my problems. I have a 95 Honda Civic DX 3dr. It originally came with a D15B7, sohc non vtec. I lost compression in 2 cylinders and replaced it with a D15Z1, sohc vtec-e. My problem is that I couldn't/can't find a complete VX harness, what I'm using is half from DX and half from the VX. I have from the ECU to the shock tower is from the DX, and from the shock tower to the engine sensors and etc is from the VX.

Here is the link to my other thread with their responses.

I'm still unsure of what I need to do in order for it run right. I'm pretty sure the VX and DX harnesses can't be used with each other, as I have an extra plug unused on my shock tower.

ss3iverson is offline   Reply With Quote
Old 04-09-2010, 10:21 PM   #2
Registered Member
imzjustplayin's Avatar
Join Date: Dec 2011
Posts: 720
Country: United States
You need to add a wire to the plug for the harness for stuff like vtec and wires for the 5 wire O2 sensors. I'd get an Electrical Wiring Diagram for the '92-'95 Civics and the service manual. You should be able to use the existing wiring harness and just add in the wiring you need. Have you tried to just drive the car like a DX? Like have all the stuff for the engine installed but continue to use the DX ECU, DX O2 sensors, etc..? I'd love to see how your car drives when in 12 valve mode on the DX ECU. Your car by default is suppose to be in 12 valve mode which is the fuel economy mode so it's possible that for now you can drive your car with the DX ECU and while you won't get lean burn, you will have the advantage of the cam timing.

I'd really really really appreciate if you could just drive around the car on the DX ECU and O2 sensors, running the car in 12 valve mode (don't short the Vtec solenoid cause otherwise it'll be in 16 valve mode), then report your experiences with the car like mileage and whatnot. It'd be excellent if you could do this because it'd tell everyone how just the cam profile alone is enough for a major boost in mileage.
imzjustplayin is offline   Reply With Quote

Thread Tools
Display Modes

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are Off
Pingbacks are Off
Refbacks are Off

Similar Threads
Thread Thread Starter Forum Replies Last Post
Let the games begin! Matt Timion General Fuel Topics 4 12-11-2021 11:04 PM
Problems with the Recently filled up section VWJunky Fuelly Web Support and Community News 2 03-19-2009 03:13 AM
Bit the bullet rikkitikkitavi General Fuel Topics 10 11-21-2007 05:36 PM
Is there a OBDI or OBDII conversion for older vehicles? kozaz General Fuel Topics 3 11-13-2007 07:32 PM
ICE loads basjoos Experiments, Modifications and DIY 9 11-11-2007 08:32 PM

» Fuelly iOS Apps
No Threads to Display.
» Fuelly Android Apps
No Threads to Display.
Powered by vBadvanced CMPS v3.2.3

All times are GMT -8. The time now is 03:05 PM.

Powered by vBulletin® Version 3.8.8 Beta 1
Copyright ©2000 - 2023, vBulletin Solutions, Inc.