crzyman1994

so i got a 91 integra and when its cold it runs great but when it gets warmed up the car runs horrible but when i unplug the o2 sensor it runs great and it is a new NGK o2 sensor and i have already replaced the distributer and wires and plugs and have changed numerace of the idle parts at first so if u could help anyway please let me know

White Devil

Punctuation would really help you more in the long run.

When you say it "runs horrible", what are we talking about here? Need details.

crzyman1994

it idles funny when it warms up and the ac is on

b16EFsedan

you MUST get more specific on this..... hunting idle? idle varies of over 500 rpm? does it die? have you checked the fitv valve? grounds? the car is always gonna idle a bit lower when a/c is engaged