Ok,
I have an 89 CRX SI. Sometimes when I'm coming to a stop the car gets ready to stall and sometimes it does stall. I don't know where to start to try and figure this problem out. It feels as if your coming to a stop in a manual car without holding the clutch in. Does anyone know how to fix this?

 

Clogged fuel filter and faulty oxygen sensor both affected my idle. After replacing those - it felt much better. Also, throttle body might use some cleaning.

 

I cleaned the throttle body and changed the fuel filter, but it still acted the same. i guess I'll try the O2 sensor next. What is the difference between the O2 Sensor made for the CRX and the universal one?