i did a zc swap in a 91 civic hatch dx, but before i did, i bought the car buy paying off a mechanics lean. and it had a busted head, we replced the head, the car ran rich til about 4k rpms then dumped off to lean, but the engine locked up before we could figure it out, then entered the zc, we got it all in and the zc does the same thing, runs rich then lean and loses pwer about 4k rpms, we thought maybe it was fuel delivery, so we replaced the filter, lines, pump, its fine, then maybe clogged exhaust so we gutted the catylitic and then replaced the muffler with an arospeed p.o.s. just to see if that worked, didnt help, we have adjusted the throttle body ever which way and cant get it, so the only thing left on the car that hasnt been changed is the map sensor, but i got another mechanics opinion on the map sensor and he said it wouldnt run at all if it was bad, but i think it could run, so before i go and buy a map sensor i wanted some second opinions or to know if anyone else has had this problem, remember both engines did the same thing with the firs was a d15 and now its a zc the d15 had a pm5 ecu, my zc has a pm6 so i know its not the ecus cuz they were changed also.
any ideas
jones
any ideas
jones