ok this is the thing wit my car 00 si wit 94 gsr swap...long block ..stock si ecu...ne ways i went out to the car checked the codes.....came up wit a bunch like 14 and 90 and some other bs...so i reset the ecu...battery terminal...started the car no CEL and let it run at idle for a bit then CEL came on..so i turned it off ..then jumpered the switch again and checked the codes now i just get code 1....from what i thought code 1 is ....Oxygen Sensor "A" (Primary) defective circuit or unplugged / defective sensor....so what u think is wrong and how to fix it?...and should i let it run longer or u guys think thats all the codes?...im guessing wit all the codes i had b4 that they r not gone...so im thinkin maybe keep drivin it then jumper and check the codes again

 

i know the o2 sensor is prolly blown...but i dun't wanna buy a new one....y would the 02 sensor just blow its brand new could it be cuz of the engine running lean...and how can i tell exactly if it is and how lean it is running?

 

i seriously doubt the sensor is defective....most of the time, like in MY case, it's just a couple fried wires.....just route the wires from sensor to the harness.....make sure they arent pinched or torn, and that should solve the problem.....if not, then just get a new one for $50 from auto-parts (the universal 4-wire) and wire that sucker up

 

thanx for the advice ...i think im gonan replace the whole harness tho its screwed ne ways so might as well and know its perfect...i think elcetrical short is doing this