Quick questions about OBD1 engine into OBD0 car!
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Honda-Tech Member
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From: City of Angels
Quick questions about OBD1 engine into OBD0 car!
Alright guys, this is my first time swapping an obd1 engine into an obd0 car. I have some questions...
First off, we've already purchased the obd0-1 conversion harness so that we can use the P06 (obd1 DX) ecu. OK my question is......What harness do i use on the actual engine?
Do i use the CRX HF harness (obd0) on the OBD1 engine? Or do i use the DX engine harness (obd1).
If i use the DX harness, how do i get it to fit at the shock tower? I know the connections are different.
If i use the HF harness, do all of the sensors and plugs go in the same on the OBD1 engine?
Also, for the ECU pigtail, do i wire the bare wires to the firewall side of the shock tower connections?
Thanx for some input.
First off, we've already purchased the obd0-1 conversion harness so that we can use the P06 (obd1 DX) ecu. OK my question is......What harness do i use on the actual engine?
Do i use the CRX HF harness (obd0) on the OBD1 engine? Or do i use the DX engine harness (obd1).
If i use the DX harness, how do i get it to fit at the shock tower? I know the connections are different.
If i use the HF harness, do all of the sensors and plugs go in the same on the OBD1 engine?
Also, for the ECU pigtail, do i wire the bare wires to the firewall side of the shock tower connections?
Thanx for some input.
Honda-Tech Member
Joined: Aug 2002
Posts: 983
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From: Yuba City, CA, USA
Re: Quick questions about OBD1 engine into OBD0 car! (0ptimus Prime)
<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by 0ptimus Prime »</TD></TR><TR><TD CLASS="quote">What harness do i use on the actual engine? Use your old CRX harness. If it is HF then your fine, if you have a DX harness get ready to convert to Multi point1
Do i use the CRX HF harness (obd0) on the OBD1 engine? Or do i use the DX engine harness (obd1).
If i use the DX harness, how do i get it to fit at the shock tower? I know the connections are different.
Take a while to change the plugs over, i wouldn't do it
If i use the HF harness, do all of the sensors and plugs go in the same on the OBD1 engine?
NO, you'lll have to change out the injector clips, dizzy plugs, convert your HF harness to 4 wire o2 plugs
Also, for the ECU pigtail, do i wire the bare wires to the firewall side of the shock tower connections?
thats up to you, i personally make all the wires connect to a new shock tower plug set and make a sub harness from the new wires. In your case since it seems like your putting in a DX motor you'll just have to add the 4 wire o2 in. or if your going to go VTEC then you'll have to add 3-4 wires based on your motor
Thanx for some input.
</TD></TR></TABLE>
Do i use the CRX HF harness (obd0) on the OBD1 engine? Or do i use the DX engine harness (obd1).
If i use the DX harness, how do i get it to fit at the shock tower? I know the connections are different.
Take a while to change the plugs over, i wouldn't do it
If i use the HF harness, do all of the sensors and plugs go in the same on the OBD1 engine?
NO, you'lll have to change out the injector clips, dizzy plugs, convert your HF harness to 4 wire o2 plugs
Also, for the ECU pigtail, do i wire the bare wires to the firewall side of the shock tower connections?
thats up to you, i personally make all the wires connect to a new shock tower plug set and make a sub harness from the new wires. In your case since it seems like your putting in a DX motor you'll just have to add the 4 wire o2 in. or if your going to go VTEC then you'll have to add 3-4 wires based on your motor
Thanx for some input.
</TD></TR></TABLE>
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0ptimus prime
Honda CRX / EF Civic (1988 - 1991)
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Aug 19, 2004 02:59 PM