I get a "check engine light" only when i hold the gas pedal in one spot for a few mins.... and it bothers me cuz i have to let off then accelerate, let off... etc.. i also don't have a relay for my fan but its been that way since i got the car and it never did it before. i had a bad O2 sensor before and got a USED on from my friend...i was just wondering if anyone knew what was really wrong with my car... also if i pulled out the O2 sensor and plugged up the hole on the downpipe and made it so the sensor is just sitting someplace or not even connected anymore... would i get a CEL? or would i not even run right anymore if i did that... just wondering. thanks for anyone who helps me out!!!!