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obd2->obd1

Old 01-03-2005, 06:11 PM
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Default obd2->obd1

plain and simple if i'm converting to obd1 from obd2b do i need to swap the dist.? i read one of the topics that said i don't, but my friend said i do. so do i or don't i? thanks
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Old 01-03-2005, 07:35 PM
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Default Re:obd2->obd1

Nope. I've swapped my 2000 Integra 0BD2b-OBD1 with no problems. No OBD1 dizzy required.
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Old 01-03-2005, 07:51 PM
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Default Re:obd2->obd1

Nope, no dizzy swap. Only thing that some people run into problems with is there IACV. Not sure on every car which this applies.
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Old 01-03-2005, 08:58 PM
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Default Re:obd2->obd1

maybe you should search, there's a complete thread on the same subject about 6 threads down :P
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Old 01-04-2005, 11:11 AM
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Default Re:obd2->obd1

u will probably have problems with the iacv ill post up the link to the fix when i get home
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Old 01-04-2005, 11:24 AM
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Default Re:obd2->obd1

the following rules apply for the '3 wire' iacv plug on obd2 civics:

1) all obd2 b series have 2 wire iacv (so you don't have to worry about it
2) all manual obd2 ex and hx (vtec equipped sohc's), also have the two wire iacv already
3) all other sohc's have the 3 wire iacv and need to be switched to a 2 wire
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Old 01-04-2005, 12:00 PM
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Default Re:obd2->obd1

Originally Posted by projekteg
the following rules apply for the '3 wire' iacv plug on obd2 civics:

1) all obd2 b series have 2 wire iacv (so you don't have to worry about it
2) all manual obd2 ex and hx (vtec equipped sohc's), also have the two wire iacv already
3) all other sohc's have the 3 wire iacv and need to be switched to a 2 wire
the 3 wire has a ground, a positive and a negative. i found a thread showing that you can ground the negative and make a 3 wire iacv work. i have to find the post though. i need to try it since i have my conversion cable and computer chipped weeks ago.
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Old 01-04-2005, 12:04 PM
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Default Re:obd2->obd1

this was jacked from another thread from another site and is not the thread iam talking about. but it references the same idea. the thread iam talking about earlier has a better description and ill try to find it.

Ok dude I just finished doing this for my 1996 Civic CX. I am running it with an P75 ECU and it run's great. All you need to do for the IACV 3 wire to work with OBD1 ECU is:

On the OBD2 connector put a Jumper on terminals A12 to A14 and these connect to the A9 terminal on the OBD1 side. The third wire is A13 on the OBD2 connector and it goes to A23 on the OBD1 side.

That's all dude now your friend does not need to change the intake manifold.
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Old 01-04-2005, 12:10 PM
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Default Re:obd2->obd1

i did search and thats was the topic i found out that i didn't have to swap the distributor, but my friend kept telling me i have to. thanks for the answer.
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Old 01-04-2005, 01:08 PM
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Default Re:obd2->obd1

well i converted to obd1 on a 96 civic and all i got was a code 14 CEL which = iacv. so from personal experience tell ur friend to shut his hole until he knows what he is talking about.
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