obd1 conversion problem
05-31-2004, 11:21 AM
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obd1 conversion problem
hey all, I got a 97 gsr and I connected my obd1 ecu, and right when it reaches about 4800-5000 rpms, it sputters like crazy. Is there more involved to do an obd1 conversion?
05-31-2004, 02:48 PM
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Re: (c2nap)
The car runs fine with the OBD2 ECU?
You feel up to checking the pinout of your harness to make sure it's correct? They can be a PITA to assemble, and occaisionally you get one that's been mispinned.
http://www.pgmfi.org/phorum/do...2.jpg
http://www.pgmfi.org/phorum/do...B.htm
RPT never got around to adding my final revisions to his pinout guide:
<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote »</TD></TR><TR><TD CLASS="quote">Add this:
ODB2b B16 to OBD1 A17 for IABs (silly B18C kids)
Change wire color to:
OBD2b B22/OBD1 B2 (LG2) brown (JDM) -or- brown/black (USDM)
OBD2b C10/OBD1 D6 (VTM) orange/green (JDM) -or- orange/blue (USDM)
OBD2b C17/OBD1 D17 (MAP) pink/white (JDM) -or- white (USDM)
OBD2b C27/OBD1 D11 (TPS) pink/black (JDM) -or- light green (USDM)
I'm ASSuming the differences between wiring colors is a JDM/USDM thing, as all three sets of OBD1 pigtails I have on hand are identical in this regard. They all came from automatic cars (they have the extra wires) but I don't know anything else about them, could be Accord garbage for all I know </TD></TR></TABLE>
You feel up to checking the pinout of your harness to make sure it's correct? They can be a PITA to assemble, and occaisionally you get one that's been mispinned.
http://www.pgmfi.org/phorum/do...2.jpg
http://www.pgmfi.org/phorum/do...B.htm
RPT never got around to adding my final revisions to his pinout guide:
<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote »</TD></TR><TR><TD CLASS="quote">Add this:
ODB2b B16 to OBD1 A17 for IABs (silly B18C kids)
Change wire color to:
OBD2b B22/OBD1 B2 (LG2) brown (JDM) -or- brown/black (USDM)
OBD2b C10/OBD1 D6 (VTM) orange/green (JDM) -or- orange/blue (USDM)
OBD2b C17/OBD1 D17 (MAP) pink/white (JDM) -or- white (USDM)
OBD2b C27/OBD1 D11 (TPS) pink/black (JDM) -or- light green (USDM)
I'm ASSuming the differences between wiring colors is a JDM/USDM thing, as all three sets of OBD1 pigtails I have on hand are identical in this regard. They all came from automatic cars (they have the extra wires) but I don't know anything else about them, could be Accord garbage for all I know </TD></TR></TABLE>
06-01-2004, 11:05 AM
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diagnosed the problem...i disconnected my vtec solenoid so my vtec dont work and i can drive it hard to redline in any gear ...so its a vtec problem...works fine on my obd2 ecu tho. anyone know what the problem may be? could it be the cams im using? they are jun3 cams meant for all motor and i just installed je 9:1 pistons
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06-01-2004, 11:20 AM
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could it be anything related to secondaries? i can downshift for it to be over 4800 rpms such as go to 4800 rpms in 3rd then downshift to 2nd so its above 4800 and its fine until i step on the gas then it starts making this noise and doesnt let me accelerate....
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