SR20 Idle problems

[89DOHC]

got the SR20 in starts everytime.. dont have the proper intake ATM but have one that seals and that fun stuff to make air flow proper but now the problem is. it idle like **** and is running real rich *black exhaust i think that is rich i get emm mixed up* my question is what can i check and what wires should i check my dad thinks it has something to do with we possible missed a wire somewhere that controlls the air/fuel ratio but i have no idea any help is greatly appreciated thank you ahead of time

[89DOHC]

bump i need help

[yellow_jacket]

Are you sure you don't have a boost leak(or vacuum leak in someof the piping.

[I H8 UR DSM]

u have an o2 sensor?

[89DOHC]

we have checked the lines so vaccum leak getting 20 mercury reading constantly for boost and no we done have a o2 sensor.. i am guessing that would make a difference?

[BuudWeizErr]

the o2 sensor tells the ecu how rich or lean the car is running and adds more or less fuel appropriately. So yes, an o2 sensor would make a difference, aside from the fact that they are supposed to be there.

[I H8 UR DSM]

Yes, its good to change when doing the swap....even better to have one in the first place, lol....go get a 300z o2 sensor, and let us know how it works...

jessehttp://www.rollhard.com

[SR Sil80]

Hey (new to these boards) the car 89DOHC is asking about is mine. Anyways We would be needing the o2 sensor out of a 300zx turbo or NA? Or would it matter? Thanks for previous help and in advance for any more help.

[SRBURG13]

Would the o2 sensor just drop in, and then just let it be? Any modifications to be done?

[Cyberkreig]

You might wanna do a search on it. In my notes about the SR I have that it is an 89 300zx Turbo. and that that item is a direct replacement.

[joe3180]

i kinda had the same prob....do you have a stock blow of valve?

[89DOHC]

nope not much on this swap is stock to tell you the truth just the turbo and internals are stock everything else is aftermarket