Do I need an new alternator for my obd1 swap?
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Honda-Tech Member
Joined: Jun 2005
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From: Salt lake City, UT
Do I need an new alternator for my obd1 swap?
I'm swapping a d15z1 (jdm version at least) into my 89 LX. While I was looking at the pinouts for my conversion harness I saw that there is an extra wire going to the alternator. I was confused so I checked honda's website.
The civic VX (the original owner of the d15z1) has five alternators available. The 89 LX has 2. none of the part numbers correspond.
VX - 31100-P08-003RM , 31100-P08-004 , 31100-P08-014 , 31100-P08-014RM , 31100-P08-024RM
89 LX - 31100-PM8-A01RM, 31100-PM8-A01RM
After talking with someone they mentioned that the VX (perhaps other cars as well) have an extra wire to the alternator. His assumption is that it is used to help keep idling low so the gas mileage will be much higher (my ultimate goal, and the goal of the civic VX).
Do I need to find myself an alternator from a civic VX? Does anyone know about the third wire (A16 on the p07 ECU)?
The civic VX (the original owner of the d15z1) has five alternators available. The 89 LX has 2. none of the part numbers correspond.
VX - 31100-P08-003RM , 31100-P08-004 , 31100-P08-014 , 31100-P08-014RM , 31100-P08-024RM
89 LX - 31100-PM8-A01RM, 31100-PM8-A01RM
After talking with someone they mentioned that the VX (perhaps other cars as well) have an extra wire to the alternator. His assumption is that it is used to help keep idling low so the gas mileage will be much higher (my ultimate goal, and the goal of the civic VX).
Do I need to find myself an alternator from a civic VX? Does anyone know about the third wire (A16 on the p07 ECU)?
Thread Starter
Honda-Tech Member
Joined: Jun 2005
Posts: 965
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From: Salt lake City, UT
Re: (Nerologic)
<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by Nerologic »</TD></TR><TR><TD CLASS="quote">nope...
i ran a vx ecu on a dx i had no issues with that just the 5 wire 02</TD></TR></TABLE>
So the ONLY difference is the five wire o2? I've been told that there are more differences than that on the p07 ECU.
If you're right you just made my day.
i ran a vx ecu on a dx i had no issues with that just the 5 wire 02</TD></TR></TABLE>
So the ONLY difference is the five wire o2? I've been told that there are more differences than that on the p07 ECU.
If you're right you just made my day.
Honda-Tech Member
Joined: Apr 2003
Posts: 9,041
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From: San Diego
Re: (SiMateoAko)
<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by SiMateoAko »</TD></TR><TR><TD CLASS="quote">
So the ONLY difference is the five wire o2? I've been told that there are more differences than that on the p07 ECU.
If you're right you just made my day.</TD></TR></TABLE>
well i also got the egr code..
but i didnt get any codes related to the alt.
also, i ran a vx alt in my buddies CRX si when his alt. went out...
no issues there either..........
So the ONLY difference is the five wire o2? I've been told that there are more differences than that on the p07 ECU.
If you're right you just made my day.</TD></TR></TABLE>
well i also got the egr code..
but i didnt get any codes related to the alt.
also, i ran a vx alt in my buddies CRX si when his alt. went out...
no issues there either..........
Thread Starter
Honda-Tech Member
Joined: Jun 2005
Posts: 965
Likes: 0
From: Salt lake City, UT
Re: (Nerologic)
<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by Nerologic »</TD></TR><TR><TD CLASS="quote">well i also got the egr code..
but i didnt get any codes related to the alt.
also, i ran a vx alt in my buddies CRX si when his alt. went out...
no issues there either..........</TD></TR></TABLE>
The more I'm looking at this the more I think I'll just pay someone to make it for me. As long as they know to include the EGR and five wire o2 I should be okay.
but i didnt get any codes related to the alt.
also, i ran a vx alt in my buddies CRX si when his alt. went out...
no issues there either..........</TD></TR></TABLE>
The more I'm looking at this the more I think I'll just pay someone to make it for me. As long as they know to include the EGR and five wire o2 I should be okay.
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