Ok heres the deal, ive got a 97 prelude sh that i race on the local dirt track. Spun a bearing in the original motor and found a jdm h22 for 200 bux so i swapped it in. I got the motor in and everything plugged up but no spark or fuel and im guessing thats cus theres no crank angle sensor, thing is this motor didnt come with one. Ive got the car converted to obd1 and have an obd1 dizzy so is there a way to use that dizzy and get away without using the crank angle sensor? Is there a diagram on how to wire the obd1 dizzy into the obd2 harness? All suggestions are welcome. Id really like to rewire if i could instead of taking the whole buttom end apart and changing everything for the crank angle sensor.


Modified by SpoonCivicSir20 at 9:18 PM 9/20/2008

 

any help?

 

are you the same person i am talking to on HMT?

 

haha yep thats me

 

woa i just did this today (96 F22 in 95 prelude, but converting it back to OBD1)

i cut the 4 pin connector off the OBD2 dizzy and soldered it onto the OBD1 dizzy, then extend the extra 4 wires comin off the dizzy down to the TDC and CKP. she started up on the 3 crank. boosted too

 

can you post a wiring diagram or pictures?

 

https://honda-tech.com/zerothread/2275163

 

we are unsure if my schematic is correct is the problem.

this is another diagram showing the schematic and it shows the ckp and cyp flip flopped from mine.


I have tried both on my car and neither will start it so ive come to the conclusion that i have a bad distributor and i need someone else to do it and confirm which one is right.

 

im gonna do mine t/m and will get back to as what wiring is correct. Ive seen my motor run in the car i pulled it out out of and using the exact dizzy that came with it.

 

to solder the OBD2 connector to the OBD1 dizzy:

connector------------ dizzy
green-----------------green
yellow/green---------yellow/green
black------------------white
yellow-----------------orange


then there's gonna be 4 more wires comin off the OBD1 dizzy, which get extended down to the TDC and CKP on the oil pump (again, i cut the bottom connector off and soldered them):

OBD1 dizzy------- OBD2 TDC & CKP:
blue/green----------blue
blue/yellow --------white
orange/blue--------green
white/blue----------red

 

thanx for the additional input

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by esedulerp5tenin &raquo;</TD></TR><TR><TD CLASS="quote">to solder the OBD2 connector to the OBD1 dizzy:

connector------------ dizzy
green-----------------green
yellow/green---------yellow/green
black------------------white
yellow-----------------orange


then there's gonna be 4 more wires comin off the OBD1 dizzy, which get extended down to the TDC and CKP on the oil pump (again, i cut the bottom connector off and soldered them):

OBD1 dizzy------- OBD2 TDC & CKP:
blue/green----------blue
blue/yellow --------white
orange/blue--------green
white/blue----------red
</TD></TR></TABLE>

this would make my wiring schematic correct.

 

granted she doesn't run PERFECTLY (dyno tune tomorrow! chris harris ) and it stalls @ idle, but it does indeed start up.

i'd say a bad dizzy is the culprit as well, but [freak] if i know. i hate electrical.

 

finally got everything wired today and started RIGHT up. THANX

 

is mine correct?

 

update?

i know you got the car running but you did not specify which diagram you used.

thanks

 

sorry my bad i havent been on the computer in a few days but the one you posted is the one i used.

 

sweet!

thanks for the confirmation man! Definitely lets me know that i bought a POS distributor

 

passwordjdm.com has a obd2 to obd1 plug and play harness, forgot how much it was

 

its not the same thing.

 

what do u mean?

 

i think preludes are different right?

 

well the car came to a hault last nite while getting ready to start the race. I had no spark so i changed my coil, wires ect. Checked all the wires i had rewired and still nothing so i wonder if it could be the distributor? Im about to buy a jdm h22 with internal coil, now can i use that or am i gonna have to rewire the wires going to my external coil to the wires on the new dizzy? Or what other dizzys can i use?

 

found out today that it was my crank pully bolt, it came loose and caused the key to come out enough to throw the timing off but i already ordered another jdm dizzy and head gasket set. So ill change the head gasket and see if that fixes the coolant problem and try the new dizzy with internal cool to see how that works.

 

actually after reading this post again it was the other diagram that was right, just the wires are reversed on yours.