The search is down. So if anyone can help, that would be great. I know there is a very good write up on this conversion, but I dont seem to have the link saved anymore. If anyone has that, please pass it on.

Also, here is the situation I am having. A friend of mine is trying to convert his 90' CRX, with a LS/vtec swap, over to OBD1. He has the jumper harness, and a chipped P72 ECU. He has a new distributor for a 94' Del Sol. He changed the plug on the distributor, to the OBD0 plug. When he changed the plug over to the OBD0 plug, he matched up the colors from the distributor, to the harness, white-white, white/blue-white/blue, etc. When he tries to start the car, it starts up, but runs rough, throwing code 9, and 20. Cylinder position, and Electric Load. Any ideas on why? Is this the incorrect way to do that?

While looking at some diagrams I have, matching colors would seem to be the incorrect thing to do.

Here is the OBD0 diagram:


OBD1


We tried matching each wire, to its correct spot, according to the diagrams. When we do that, no code 9, but the car does not start. So obviously that is incorrect. Also, code 20 is still stored.

Any help would be appreciated.

 

bump

 

im converting to obd-1 as well, so i'd like to see this information too

 

glad I bought an obd1 swap

 

I found this here if this helps http://www.knology.net/~jediklc/obd0toobd1swap.htm

Distributor. This change is very similar to what is required in an HF/SI. Simply interchange the plugs, making sure you place the same color wires on the DX harness in the spots occupied by the same color wires on the 1992-1995 harness. There are just a couple of exceptions here. The 1992-1995 harness has a yellow/green igniter signal wire. On the DX harness, this wire is white. But it is of a larger diameter than the white wire used for the distributor sensor. The other exception is the extra two wires. These are used for the CYP sensor on 1988-1991 distributors but for the CKP sensor on 1992-1995 distributors. As I said in the other thread, you can use the wires from a 1988-1991 HF/SI harness. This harness has a nice, neat cable with a light blue shield that has both wires. Remove this wire, keeping the pins for an easy, clean install. Connect the shield of this wire (and the knock sensor wire) to a ground. You can add one if you like.

What model was the CRX? If it is a DX you have to add a wire also for the dizzy.

 

Must be the right season for OBD0 to OBD1 conversions! LoL.

I'm going through the same thing today.

Weird, three of us going through the same ordeal in the same day.

 

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

What model was the CRX? If it is a DX you have to add a wire also for the dizzy.</TD></TR></TABLE>


Reading through that site now, thanks.

His car is a 90' Si.

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by EJ1 wilcox &raquo;</TD></TR><TR><TD CLASS="quote">Must be the right season for OBD0 to OBD1 conversions! LoL.

I'm going through the same thing today.

Weird, three of us going through the same ordeal in the same day. </TD></TR></TABLE>

the weather...its cold now. im doing mine too!

color for color, plug for plug

 

im doing a conversion as well...but no one is selling any wire harnesses

 

what are you talking about RYWIRE!!!! lol "Nobody is selling wire harnesses." You so crazy. We even have a banner ad going LOL.

Distributor King distributors have 2 known "mis-colored" wires.
If you go position to position it's good, but color to color on one circuit is not.
The bad circuit is the ORANGE and WHITE wire for CYP (the code 9 you're getting)
Flip those 2 around, and you're set mate.

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by hatchinprogress &raquo;</TD></TR><TR><TD CLASS="quote">im doing a conversion as well...but no one is selling any wire harnesses </TD></TR></TABLE> Ive used two of boomslang fabrication obd0-obd1 harnesses and they get from me.

i know you can make them but for $105 it wasnt worth my time. bolth harnesses i used i pluged the harness in swaped out the distributor and the car fired right up

http://www.boomslang.us/obd0to1.htm

 

Rywire has the distributor adapter, and subharness packages you can use as well

http://www.rywire.com

 

i need a si harness i have the jumper already

 

Sounds like you need a dpfi to mpfi, not a si harness... you do know that you cant plug a si harness into a dpfi chassis, right?

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by droppedcrxsi &raquo;</TD></TR><TR><TD CLASS="quote">Sounds like you need a dpfi to mpfi, not a si harness... you do know that you can plug a si harness into a dpfi chassis, right?</TD></TR></TABLE> you mean cant right? its not going to work unless you swap out the dash harness too.

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by droppedcrxsi &raquo;</TD></TR><TR><TD CLASS="quote">Sounds like you need a dpfi to mpfi, not a si harness... you do know that you cant plug a si harness into a dpfi chassis, right?</TD></TR></TABLE> ???? i was just told that i need a si harness since i have a jumper harness made. it's a dx crx and i have a z6 just sitting in the car

 

Nope you use your stock harness convert that to MPFI then use the obd0-obd1 conversion harness.

 

88-dx. ya I was editing as soon as I realized.... my bad.

...The si harness is good for plugs, thats it. Thats why we sell so many dpfi to mpfi harnesses dood. Its the only way...

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by droppedcrxsi &raquo;</TD></TR><TR><TD CLASS="quote">88-dx. ya I was editing as soon as I realized.... my bad.

...The si harness is good for plugs, thats it. Thats why we sell so many dpfi to mpfi harnesses dood. Its the only way... </TD></TR></TABLE> so then what would i need? a dpfi 2 mpfi and obd-1 conversion harness???

 

You need to send me your dx harness, and the little pigtail from your ecu jumper along with 190 dollars for the conversion, and you will have a plug and play harness all ready for obd1, and it will look like a factory harness

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by droppedcrxsi &raquo;</TD></TR><TR><TD CLASS="quote">You need to send me your dx harness, and the little pigtail from your ecu jumper along with 190 dollars for the conversion, and you will have a plug and play harness all ready for obd1, and it will look like a factory harness </TD></TR></TABLE> well i dont even have a complete harness(alot of people trid to help me and quit after they hack a harness) so what would you charge for everything??


this is what i got: 90 crx(dx) z6 engine (si tranny) i have the 4-wire o2 and it has it's own plug, z6 dizzy, si dizzy(obd-0), jumper harness, p28 ecu, and a chipped pr4


so what would i need to do the conversion and how much would you charge?

 

Send us the scrap pieces of harness that you have. It helps, trust me.
Also send the ECU Jumper and O2 Sensor (to match plug correctly)

We will sell & send you this:
DX Core - $45
(we'll go pull a matching DX harness from a junkyard, for your car, guaranteed to work)
OBD0 DPFI to OBD1 D16z6 Conversion Package (minus ECU Jumper) - $190
http://rywire.com/store/produc...id=66

Sell the PR4 ECU and Si Distributor, not gona be needed.

So that's $235 total. (Plus tax on the $45 core if you're in CA)

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by my_slow_civic &raquo;</TD></TR><TR><TD CLASS="quote">The search is down. So if anyone can help, that would be great. I know there is a very good write up on this conversion, but I dont seem to have the link saved anymore. If anyone has that, please pass it on.

Also, here is the situation I am having. A friend of mine is trying to convert his 90' CRX, with a LS/vtec swap, over to OBD1. He has the jumper harness, and a chipped P72 ECU. He has a new distributor for a 94' Del Sol. He changed the plug on the distributor, to the OBD0 plug. When he changed the plug over to the OBD0 plug, he matched up the colors from the distributor, to the harness, white-white, white/blue-white/blue, etc. When he tries to start the car, it starts up, but runs rough, throwing code 9, and 20. Cylinder position, and Electric Load. Any ideas on why? Is this the incorrect way to do that?

While looking at some diagrams I have, matching colors would seem to be the incorrect thing to do.

Here is the OBD0 diagram:


OBD1


We tried matching each wire, to its correct spot, according to the diagrams. When we do that, no code 9, but the car does not start. So obviously that is incorrect. Also, code 20 is still stored.

Any help would be appreciated.</TD></TR></TABLE>

yeah i had the same problem when i did the obd0 to obd1.. threw a code 9 (cyp sensor) i replaced the dizzy and all was fine

 

what the heck are you supposed to do when converting to obd1, car wont start and all you throw is the ELD code? code 20? It dosent matter which sensor wire I unplug at the dizzy, cylinder, tdc, or crank, i still ONLY throw code 20. whats up with that?

 

I depinned my OBD0 dizzy plugs wire by wire repinning them into the OBD1 plugs.

All I did was match color to color and it started right up with no codes.

I saw the diagram above before repinning the plugs and that diagram is a little different then how mine were colored. I decided to go with matching the colors instead of going by those diagrams and it worked fine.