doing a obd0 to obd1 conversion.... whats my options??
05-12-2004, 11:10 AM
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doing a obd0 to obd1 conversion.... whats my options??
i have a 89 crx si (obd0) and im putting a 93 ls engine (obd1) in it... so i need to do a obd0 to obd1 conversion.... is it possible to take the harness out of the ls and put it in my crx??? or do i have to get the conversion for the ecu and engine??? if so where can i get those harness pieces at cheapppp???
05-12-2004, 11:13 AM
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Re: doing a obd0 to obd1 conversion.... whats my options?? (CRX_GUY_123)
You can get a harness from http://www.vtecfrog.com
"*adpt-obd0x1
OBD0 Chassis to OBD1 ECU
$135.00"
Do a search, plenty of info on this.
"*adpt-obd0x1
OBD0 Chassis to OBD1 ECU
$135.00"
Do a search, plenty of info on this.
05-12-2004, 03:18 PM
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Re: doing a obd0 to obd1 conversion.... whats my options?? (CRX_GUY_123)
Well, thats all you really need, is teh harness for the ecu, then you run wires for the new 4 wire o2 sensor, vtec sylinoid and pressure switch, and repin teh distributer to fit an obd1 plug, or use your old obd0 plug on teh dizzy side, and put the pins in it from teh obd1 dizzy. Everything else just plugs in.
05-12-2004, 03:50 PM
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exaclty what y49 said
but instead of repinnning the distrubitor to use and obd0 connector i cut and soldered the obd1 connector on the cars stock harness
this way if i have to change the distrubitor you dont have to repin it agian or worse forget that you are using an obd1 distrubitor and buy an ond0 one and screw things up
but instead of repinnning the distrubitor to use and obd0 connector i cut and soldered the obd1 connector on the cars stock harness
this way if i have to change the distrubitor you dont have to repin it agian or worse forget that you are using an obd1 distrubitor and buy an ond0 one and screw things up
05-12-2004, 05:28 PM
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Re: (BlackCRX)
Yeah, i didnt have an obd1 connector, thats why i didnt do that, but i would just pull the pins outta the connector, and then repin them into the new connector, cleaner, and less mess.
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05-12-2004, 05:51 PM
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Re: (y49crxsi)
<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by y49crxsi »</TD></TR><TR><TD CLASS="quote">Yeah, i didnt have an obd1 connector, thats why i didnt do that, but i would just pull the pins outta the connector, and then repin them into the new connector, cleaner, and less mess.</TD></TR></TABLE>
I agree... re-pinning is the best method. Its easier, and cleaner than any of the other options. And personally I prefer to repin the engine harness w/ gray plugs rather than repin the dist with cream plugs. But if you can't get your hands on some gray dist plugs... then do it the other way.
CRXGuy: I did a write-up awhile ago: http://www.g2ic.com/forums/showthread.php?t=86612 Should help you get some basic and backround knowledge before doing the conversion. Also the SEARCH function is your best friend, use it.
I agree... re-pinning is the best method. Its easier, and cleaner than any of the other options. And personally I prefer to repin the engine harness w/ gray plugs rather than repin the dist with cream plugs. But if you can't get your hands on some gray dist plugs... then do it the other way.
CRXGuy: I did a write-up awhile ago: http://www.g2ic.com/forums/showthread.php?t=86612 Should help you get some basic and backround knowledge before doing the conversion. Also the SEARCH function is your best friend, use it.
05-13-2004, 11:18 AM
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Re: (91IntegGS)
ok the guy thats putting my engine said i need to get the conversion harness for the engine and the ecu... i dont get it?? i dont need the harness for both??? i dont know anything about wiring this... so stick with me... 
05-13-2004, 11:33 AM
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Re: (CRX_GUY_123)
LS doesn't have vtec so you dont have to worry about wiring that. Otherwise, use your original Si engine harness, rewire the dizzy like said, and get a conversion harness for the ecu, and wire for a 4 wire o2 sensor.
05-13-2004, 12:00 PM
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Re: (CRX_GUY_123)
<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by CRX_GUY_123 »</TD></TR><TR><TD CLASS="quote">got a post on how to rewire the dizzy??</TD></TR></TABLE>
your jumper harness will have instructions on how to do this. Basically you just swap wiring connectors to allow the obd1 dist to plug into your obd0 engine harness (no cutting/splicing needed). If you would have read the write-up I linked above you would have already had directions for this.....
your jumper harness will have instructions on how to do this. Basically you just swap wiring connectors to allow the obd1 dist to plug into your obd0 engine harness (no cutting/splicing needed). If you would have read the write-up I linked above you would have already had directions for this.....
05-13-2004, 12:29 PM
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Re: (91IntegGS)
ok so this guy told me i need a conversion harness for my ecu and my engine... are you saying all i need is the harness for the ecu?? and since i have an empty engine bay... no stock engine... whats going to be diffrent when i try and rewire my dizzy???
05-13-2004, 01:15 PM
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Re
all you need is the Ecu adapter harness from OBD0 > OBD1 An a OBD1 Dizzy, ECU, and a 4 wire o2 sensor. That should be it, oh also your going to need plugs to switch on your engine wireharness so you can properly connect the new dizzy. But there are ton's of way's to hook up your dizzy just make sure all the wires match up correctly. That should be it. It is a 2 hour job.
05-13-2004, 02:44 PM
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Re: Re (CRX_GUY_123)
just get them off of a junkyard car. I am not even saying you need them, I just used my pre-exsisting OBD0 plugs off my old Dizzy. The only problem with doing this is, every time my dizzy goes out i need to resocket the plugs
05-13-2004, 03:24 PM
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Re: Re (crxirex)
You have a stock wiring harness in your car right, from teh original motor????? From one of your posts above, it sounds like you said theres nothin gin the engine bay.
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