Wiring Haress Question OBD2A-OBD2B- D series swap
Thread Starter
Joined: Oct 2003
Posts: 5,899
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From: atlanta, ga, usa
Wiring Haress Question OBD2A-OBD2B- D series swap
Ok i have a 99 Civic EX. The engine knocks. I have purchased a 98 DX Engine.
I CAN USE the 99EX harness on the 98DX, but ill have to rewire for the 3 wire IAC correct? Then ill have to source a 99 DX ECU Correct?
IIRC you cannot use the 98DX harness in the 99 Car due to OBD incompatability.
If i swap the y8 Intake manifold onto the DX motor, the EX harness will plug in to all the IAC/IAT, but if i run an DX ECU ill get CEL for those senors, andi cant run the EX ECU cause then ill get CEL for VTEC thus not passing emissions.
So my best bet is to rewire the EX harness correct for the DX ENGINE? or purchase a 99 DX harness.
Confirm my thoughts please
I CAN USE the 99EX harness on the 98DX, but ill have to rewire for the 3 wire IAC correct? Then ill have to source a 99 DX ECU Correct?
IIRC you cannot use the 98DX harness in the 99 Car due to OBD incompatability.
If i swap the y8 Intake manifold onto the DX motor, the EX harness will plug in to all the IAC/IAT, but if i run an DX ECU ill get CEL for those senors, andi cant run the EX ECU cause then ill get CEL for VTEC thus not passing emissions.
So my best bet is to rewire the EX harness correct for the DX ENGINE? or purchase a 99 DX harness.
Confirm my thoughts please
Seagull Management
Joined: Jun 2008
Posts: 15,150
Likes: 26
From: Miramichi, NB, Canada
Re: Wiring Haress Question OBD2A-OBD2B- D series swap (VtecKiDD)
<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by VtecKiDD »</TD></TR><TR><TD CLASS="quote">Ok i have a 99 Civic EX. The engine knocks. I have purchased a 98 DX Engine.
I CAN USE the 99EX harness on the 98DX, but ill have to rewire for the 3 wire IAC correct? Then ill have to source a 99 DX ECU Correct?</TD></TR></TABLE>
Correct
<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by VtecKiDD »</TD></TR><TR><TD CLASS="quote">IIRC you cannot use the 98DX harness in the 99 Car due to OBD incompatability.</TD></TR></TABLE>
Correct
<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by VtecKiDD »</TD></TR><TR><TD CLASS="quote">If i swap the y8 Intake manifold onto the DX motor, the EX harness will plug in to all the IAC/IAT, but if i run an DX ECU ill get CEL for those senors, andi cant run the EX ECU cause then ill get CEL for VTEC thus not passing emissions.</TD></TR></TABLE>
Correct
<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by VtecKiDD »</TD></TR><TR><TD CLASS="quote">So my best bet is to rewire the EX harness correct for the DX ENGINE? or purchase a 99 DX harness.</TD></TR></TABLE>
Yes, You've got it all figured out. In regards to the engine though, you couldn't find a good Y8 anywhere?
I CAN USE the 99EX harness on the 98DX, but ill have to rewire for the 3 wire IAC correct? Then ill have to source a 99 DX ECU Correct?</TD></TR></TABLE>
Correct
<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by VtecKiDD »</TD></TR><TR><TD CLASS="quote">IIRC you cannot use the 98DX harness in the 99 Car due to OBD incompatability.</TD></TR></TABLE>
Correct
<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by VtecKiDD »</TD></TR><TR><TD CLASS="quote">If i swap the y8 Intake manifold onto the DX motor, the EX harness will plug in to all the IAC/IAT, but if i run an DX ECU ill get CEL for those senors, andi cant run the EX ECU cause then ill get CEL for VTEC thus not passing emissions.</TD></TR></TABLE>
Correct
<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by VtecKiDD »</TD></TR><TR><TD CLASS="quote">So my best bet is to rewire the EX harness correct for the DX ENGINE? or purchase a 99 DX harness.</TD></TR></TABLE>
Yes, You've got it all figured out. In regards to the engine though, you couldn't find a good Y8 anywhere?
Thread Starter
Joined: Oct 2003
Posts: 5,899
Likes: 0
From: atlanta, ga, usa
Re: Wiring Haress Question OBD2A-OBD2B- D series swap (94EG8)
nah man y8s are like unicorns down here, $1000 for a longblock if you can find one.
I buy an sell cars, so my priority is just to get it running an keep costs as low as possible
I buy an sell cars, so my priority is just to get it running an keep costs as low as possible
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