for the past couple weeks my check engine light has been coming on and off but it was running fine. the other night i was driving and the cel came on again and my car started running like crap, boggin, abnromal idle. i know when the o2 sensor goes bad the car will run like crap. could thta be the problem, or what else could it be?

 

take it to autozone and get the code read. They do it for free, or you can rent the OBDII reader from them(it is a free rental, you get the money back after you return the reader). come back here and post the code.

 

got an eg with b16a2. so does it matter if i get an obdII tester?

 

Any car/engine after 96 should have an OBDII compatible ECU. So I think you should be ok as long as you also swapped in the ECU with the OBDII connector.

 

the ecu i have is an odbI but i got the skunk2 p28 program installed.