i just put in the same honda civic 1.5 motor as i pulled out because of a blown rod. i swapt over all of the bolt on things and now when i start the car it surges real bad i dont know what the heck is wrong with it

 

what kinda surges?... like as in.. running real rough?... or what?.. i mean there is a ton of things that can happen.. when you do a swap.. even if it is the same exact engine that was in there b4... so explain what it is doing a lil better.. and maybe some of us can help you!

You woulda been better off going with the d16a6... prolly only woulda ran ya.. like 150 bucks.. and the engine that you got .. mmh.. d15b??? maybe.. i think..

neway..
yea
bryan

 

yeah but i got the engine for only 50 bucks cause my friend did a swap on his car but whne i turn the car on it runs real ruff it surges like the rpms are goin high to low constantly the ecu only flashes once when i turn the key, the eughast was i guess red hot when i firts turned it on when it was surging i just dont know what the problem is

 

one flash on the ecu is oxygen sensor, surge in idle is the idle air control valve. thats on the right side of intake mani if looking down from the front of engine. could be a vacuum hose also. the idle control valve has a few small hoses coming out of it and has a cylinder looking shape. It sits right next to the intake mani, or the throttle body. I've heard of cleaning it with brake cleaner inside and out, but i never tried it.

 

idle air control valve isnt throttle position censor is it, cause that could be a problem, also the vacuum lines make sense.

 

yep, they are different.