Band1
New Member
Greetings to everyone and thank you for this forum. Before I did the swap my car always ran perfect (I bought it brand-new by the way) but ever since then, I have been plagued with a rough, rich idle that fluctuates from 300 to 2000 rpms. the only CEL code it throws is #14. We have tried 5 other IACV's but no change. We have reset the ECU and unplugged it, etc. too. Car came with P06 and we swapped it to P72 from 95 gsr. A check was done for vacuum leaks but none were found. I replaced IM gasket at the time I drilled a hole in the arm to mount a sensor (cant remember which one rite now). It also required 2 holes be partially drilled (not all the way thru) for the mounting screws. The dizzy was changed out for OBD1 type. Alternator was also changed out for OBD1 type. A used set of injectors was donated by a friend. A vacuum diagram was followed to make sure everything hooked up correctly with nothing left uncapped on IM. All sensors have been checked to make sure correct color wire plug-ins are in their right place. If you disconnect the MAP or TPS the idle only gets worse. The ECT sensor was checked and swapped out anyway with a used donor part but made no difference. I finally gave up and took to a local Honda dealer. He checked vacuum, wiring, and IACV due to code 14. He first said it was the IACV but then I told him 5 others were tried, one of which was off my friend's car he drives every day. Tech then said it was the fact that my 99 Si TB did not contain an FITV like my car was designed for. I let him order a TB and FITV. He installed them but then engine wouldn't even hold an idle AT ALL!!! After 4 weeks of trying everything he knew, the dealership called me and told me "NO CHARGE" and to please come and get it. Tech put my 99 TB back on so that I could at least make the 45 mile drive home. I forgot to mention that it runs perfect on the highway (anything above 2000 rpm's). No sputters, jumps, jerks of any kind...it runs like a little race car out on the road with plenty of power. Engine operating temperature is perfect and VTEC works like it should by way of a hand-made vtec harness I bought off ebay made just for my swap. Also, we installed new timing belt before engine installation (it still had factory belt with 139,000 miles on engine). Also installed new oil pan gasket and valve cover gasket at this time. Spark plugs and wires were not replaced.
Please help!!!!
Please help!!!!
Last edited:
