ok, so i had a CEL, n i took the code out, 0509, fellow orger helped me out, i forgot who, but thank you. he told me that it was my front 02 sensorl. i've gotten this CEl b4, usually happens when i floor it a lot. so i cleared it, n see if it would come back, it did because i floored it quite a bit afterwards. but thats not the case. so i ordered a new 02 sensor n was about to replace it. my mileage was getting killed!!! but then once i got the 02 sensor, the CEL went away. so does this mean i should change it anyway??? i'm not saying that i wanna be cheap on saving the 02 sensor, but why change it if its ok. maybe my i30 is playing a trick on me
okie sokes, i guess thats what i'm gona have to do...btw....is 300 for a full tank with AC bad gas mileage?? i think i still get about 22 mpg...n i do loca n highway..dunno if thats good or not..i know some ppl get like 400 to the tank but my friend who has an 03 max gets like 340-350 on a tank
IIRC, the CEL will stop turning on after X number of ignition sequences, whether it is 50 or 100, i'm not sure. but that doesn't mean the code isn't still there. change it. same thing happened to me.
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Actually thats incorrect. You are right in that the CEL will turn off after X number of iginition/driving sequences. BUT, it will only turn off if the problem stored is not detected during that time...Originally Posted by 86maxima96
IIRC, the CEL will stop turning on after X number of ignition sequences, whether it is 50 or 100, i'm not sure. but that doesn't mean the code isn't still there. change it. same thing happened to me.
oh really? hmm, ok. cuz i had 0303 popping up, and then one day it was just gone. then a while later, the light came on again and i checked the codes and 0303 and 0304 came up.
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Right - so if you had checked for codes when the light was off, you might have pulled the 0304 (since that doesn't set the light), but I would expect that the 0303 would not be there. Once the ECU detected the 0303 failure, it set the light again.Originally Posted by 86maxima96
oh really? hmm, ok. cuz i had 0303 popping up, and then one day it was just gone. then a while later, the light came on again and i checked the codes and 0303 and 0304 came up.
Newbie - Just Registered
All of you that have changed your O2 sensors, were you able to find a socket that fit? All I've been able to find are 7/8 and my sensor looks to be 16-18 mm. It's the rear sensor on a 96. It looks like I'll have to remove the cat heat shield in order to get a wrench in there.