I have a 90 STD to D16z6 swap. Did the MPFI swap and car will turn over but will not crank. Im not too sure if the mpfi wiring is done right because, when plugs B and C are plugged up to the ecu the car battery will still be on without the key being in the ignition. Making the cluster light stay on, but very dim, and causing the fuel pump to not cut on. But when the ECU is unplugged the cluster light and the seatbelt buzzer will cut off.

My cousin did the wiring but I am not sure if it is wired right. We got confused when my B12 had a wire in. In that case what should I do with B12? He just spliced B12 and wired C2 to it . Then ran wires from both C1 and C2 to the engine bay and connected to the blue/yellow - blue/green by splicing the 2 wires that was pinned from the DX harness side and just straight wire the C1 and C2 tot he blue/yellow - blue/green

Edit: Him and his friend checked the wiring and said it was correct.

And on the DX harness it has 5 wires to the dizzy and 7 wires on the Si dizzy. Where does the other 2 from the Si dizzy go to or what should I run to those?


ECU is throwing a code 10 and 20 and im getting no spark.

Modified by LHD Hatch at 1:48 AM 11/23/2004


Modified by LHD Hatch at 1:49 AM 11/23/2004

 

go over your mpfi wiring and make sure it's all right. check all your grounds and tighten them if needed. make sure your firing order is right. spray some wd40 into the tb and try to crank it. if it starts then you're not getting fuel. if it does'nt start it's probably timing or wiring.

 

We need some more info.

you said STD to z6, most would assume you did obd1 conversion when u say that.

Im guessing you just put a z6 in a std hatch and stayed with obd0.

Also, the car is turning over but will not crank. If its turning over, its cranking.

Do you have fuel, spark, and is timing correct. If you have the timing right and u have fuel then theres only one thing to check.

Check your connections at the dizzy. There are 2 white wires that you spliced into, reverse them and see if that helps, if not, let me know.


also, some of the pinouts already do have wires, such as b12. If you didnt use 4th gen hatch's MPFI wiring diagram, i suggest you do so.

http://www.4thgenhatch.com

 

It is still obd0. We smelled fuel on the spark plugs so we must be getting fuel, and timing is on point. But we arent getting any spark. I will definately have to recheck the mpfi wiring again. And we were also confused on wiring the dizzy. We had matched everything up and when it came to hooking up C1 and C2 we werent sure weather to tap into the plugs at the harness side or the dizzy to blue/green and blue yellow. Or should we just splice them on either side?

Which diagram did you guys use that was the easiest? And that link doesnt work.

Thanks guys.

 

http://www.fourthgenhatch.com/

This is what you should use.

 

tap into the plug on the harness suide the way you dont have to do it to every distributor that u get did you just cut and spolice all the connections or did you re-pin it?

 

repinned

 

My cousin checked the wiring again and got a friend to and he said it was wired fine. The car is with him and I have no access to it this week. But, he is thinking its the main relay, or the ecu not working right.

The wierd thing that is frustrating me is the cluster light still being on when I turn off my key. But goes off when I unplug the ECU. And when that light stays on my fuel pump doesnt come on. And clue?


Modified by LHD Hatch at 1:42 AM 11/23/2004

 

that is weird. what ecu and distributor are you using?

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by mr. carpenter &raquo;</TD></TR><TR><TD CLASS="quote">that is weird. what ecu and distributor are you using?</TD></TR></TABLE>

Crx Si intake manifold

Crx Si dizzy

PM6 ECU

 

it sounds like a wiring problem. this is the write up i used. compare it to what you have when you get a chance. also if you know some one with a honda that you could borrow the main relay from just to see if that's the problem.
http://www.fourthgenhatch.com/mpfi.html

 

Im thinking it is the wiring also.

He was counting the ecu pin outs from left to right. Is the correct way right to left?

And what is the correct distributor wiring (color code) from DX harness to Si dizzy.

Thanks for the help so far.

 

that link shows the ecu pinouts and how to count them. i'm trying to recall how i did the dist. wiring plug swap. let me search.
okay sroll down in this link and he shows how the color coating on the wires should match fron dx to si and the wires ran from c1 and c2 on the ecu will be the two new wire into the plug.
http://www.angelfire.com/d20/h....html

 

on the distributor plug swap, its very easy to confuse fat white wire with thin white wire.. they are only about .015" difference and i can barely tell by looking. also, if you guys ever have a hard time finding a spare Si dist. male plug to solder to your dx harness.. the round plug up by the injector box also fits, even though colors dont match. i clip every one i see at the junkyard.

 

http://www.angelfire.com/d20/h....html

That is the diagram I used. On the diagram it shows 2 blue/yellow and 2 blue/green. 1 of each is for the CNK and other 2 to the TDC. From what I recall i only had 1 of each blue/green-blue/yellow.

 

Man how did you mess up the cluster if thats still on without the key in? I have a friend doing the same thing but with a dohc zc instead of z6. You should get the mpfi setup first and then you should of done the obd1 conv. cause that's like trying to do two projects that involve a quite abit of wiring on each part. Good luck though.

 

This swap is so damn simple.

Here is an exact link, print it out, take it out to your little car, go over it from top to bottom. Check and make sure that each and every wire is in the correct location, if not, replace into the correct location. If needed, rinse and repeat.

http://www.fourthgenhatch.com/index2.html

 

Modified by mr. carpenter at 8:13 PM 11/23/2004