I have a DOHC ZC in my civic,, I installed it myself and I used the right wire harness and everything else that I was supposed to do, but since I've got it out its been acting up, like constantly idling up and down, and it doesnt seem to have the power it should,, there isn't any codes up either. I've tried adjusting my tps but it either makes the idling problem go away and makes the car work worse or I can adjust it so it idles up and down but works good,,,,, any suggestions

 

have you replaced your cap, rotor, plugs, plug wires? it could be due to that. if you have already done all of that, try a new tps. usually, the zc's from importers get really banged up during shipping and the tps always seems to be broke. mine was and many other people i know had broken ones. also, you could try the techinque that people who dont know anything about cars use and just start wiggling wires. maybe your tps harness isnt connected very well. i have seen this problem before. and if that doesnt work, check your ignition timing. it doesnt do much on the zc's but if your dizzy is off a little it could be causing this problem. those are just suggestions... i havent had this problem myself so idk what to tell you.

 

do as the above person stated also make sure all vaccum hoses, and wires are hooked up, could be dizzy and timming

 

yeah, everything is hooked up right, and the timing is on but its really wierd, tonight I was playing with the tps again and I had it idling perfect for a while and later on in the night when I was at a stop sign it started doing it again,, I have no idea why,, so to the point where I am so frustrated I'm going to put on the stock intake off my old 1.6,, its smaller but I didnt have any problems with that.. But I will try changing the tps first because the engine I got came out of a smashed up civic and I guess the tps was busted and they changed it so I dont know if it was any good or not.