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raks_22
09-13-2010, 10:19 PM
hi people, i have a little problem whit the o2 sensor, the fact is:
i put 3 diferents o2 sensor in the G, and no one work :S
when desconect it, the car runs good (spend a lot of gas, but runs fine) when conect the o2 (anyone of 3) the car misfire when accelerate.

i think it a little imposible that the 3 sensors make the same fail :S


what can be? anyone?


thanks!
Rach3T8G
09-13-2010, 10:28 PM
Are you using OEM O2 sensors or aftermarket?
raks_22
09-13-2010, 10:32 PM
1 is oem, the other one is bosch, the other one i dont know, i think it is aftermarket to!
Rach3T8G
09-13-2010, 10:36 PM
How long did the OEM sensor last? Did you check the connector?
raks_22
09-13-2010, 10:42 PM
i think the conector is ok, but, can be the car conector?
raks_22
09-13-2010, 10:44 PM
another think can be?
mko
09-13-2010, 10:47 PM
did you reset the ECU?
raks_22
09-13-2010, 10:50 PM
i dont know how to do that!
Rach3T8G
09-13-2010, 10:52 PM
Disconnect the battery for 10mins
raks_22
09-13-2010, 10:54 PM
whit the sensor conected?
raks_22
09-13-2010, 11:43 PM
ECU reseted, the same problem!!!!
mko
09-14-2010, 02:00 AM
is the check engine light on?
03chi-town0z
09-14-2010, 05:55 AM
if the problem only happens when the sensors are installed, you could be shorting to ground somewhere in the wiring and the sensor is closing the loop from power/reference signal from the pcm to wherever the short is leading to your problem. like mko says, if there is a check engine light on, look at the actual wiring for the problem shown, not just the component that it mentions (o2 sensor) and you may find your problem that way
raks_22
09-14-2010, 07:16 AM
yes , the check are on! i need to check the wires?.
mko
09-14-2010, 12:31 PM
no, check what the code is. stop going for random things
raks_22
09-14-2010, 12:33 PM
well, if i conect the O2 and reset the ecu, the check dont turn on, when disconect it is when the check turn on,
mko
09-14-2010, 12:40 PM
the ecu has relearning procedures. you reset it again and let it idle for 30min to an hour.
raks_22
09-14-2010, 01:07 PM
u say, reset it again, conect the sensor and let the car runing for an hour?
mko
09-14-2010, 01:26 PM
reset it with the sensor hooked up
03chi-town0z
09-15-2010, 05:51 AM
yes. mko is right, if there are check engine codes, work with those first. but if you are only getting codes with the sensor unplugged then obviously there's your code. do the procedure that mko is telling you to relearn idle/tps position and your problem should clear up. it may also take a bit of driving after the hour or so of idling to completely go away though.