View Full Version : OBD1 conversion oddness
Turboteener
03-04-2010, 07:40 AM
I converted the Prelude last night to OBD1 from OBD0. Now I have been driving the car for weeks on the original OBD0 ECU and wiring. I used a Rywire jumper harness with mods for the Prelude specific wiring. Now I am getting some TPS weirdness. It reads 50% at fully closed and decrease to 0 upon throttle opening. If I go into the Hondata and read the tps it gives me 40% at closed and 60% at WOT. WTF? Since I just did this last night I haven't had a chance to check out the weirdness. But I am trying to figure out why the TPS wiring is now screwed up when it wasn't before.
Anyone have any thoughts?
FURYOF4
03-04-2010, 10:34 AM
Sounds very odd. No codes Im guessing? Must be some crossed up wires.
d112crzy
03-04-2010, 11:56 AM
Check continuity between wires at tps and at ecu. Make sure all pins in the conversion harness are tight in their spots.
Turboteener
03-04-2010, 03:21 PM
Yeah no codes car drives smoothly with no major problems. Starts right up. It doesn't cut injectors like it should when you chop throttle, but that is about all. I am wondering if the Prelude has a different wiring for the TPS than the other OBD 1 vehicles, I know the CKPS and CMPS are in different places, those were moved.
I am checking tonight. Although I doubt there will be a continuity issue as the thing runs now.
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