i get a "02 Sensor low voltage" code off and on. Im just asking cause i just put on a LS6 intake and the car was running great. Then i slowed and from like 0-20mph the car sputtered like it was running rich? Im like WTF so i cruise back home and around 50-60mph the car felt fine. But when i slowed i got the same sputtering like feeling, then a SES popped on which said "02 Sensor low voltage"

so would a bad 02 cause my car to act up under acceleration like its getting way to much gas or something?

 

Yes, a slow switching O2 will play havoc with the A/F mixture control and most likely cause you to go rich which will cause the stumble/hesistation. Smell any unburnt fuel from the exhaust ?

 

</font><blockquote><font size="1" face="Verdana, Helvetica, sans-serif">quote:</font><hr /><font size="2" face="Verdana, Helvetica, sans-serif">Originally posted by Batmobile/SS:
<strong>Yes, a slow switching O2 will play havoc with the A/F mixture control and most likely cause you to go rich which will cause the stumble/hesistation. Smell any unburnt fuel from the exhaust ?</strong></font><hr /></blockquote><font size="2" face="Verdana, Helvetica, sans-serif">thats something else i just thought of, but I did notice the exhaust smelling a little gasy. It wasnt the same cam smell i had been smelling. I just thought maybe the intake had a break in smell lol <img border="0" title="" alt="[Wink]" src="gr_images/icons/wink.gif" />

question is, how do i find which one it is?

I have rear o2 simms but i got a 0131 SES light(i think that was the number)

i know when i was changing the plugs i hit a sensor on the drivers side towards the very front of the manifold. Actually bent it a little

 

That should be you driver side pre cat o2 sensor. Sounds like it is damaged since you bent it. They can be damaged easily. You would have to check it out with a voltmeter. You can also check the wiring to see if that could be the problem for the voltage error. Might just have to get a new O2 sensor. If you have alot of miles it might be good idea anyway. You can get one for like $70-80 at an autopart store not the dealer. Also the BOSCH brand is the same as AC Delco. It even has AC and the same part number on the O2 sensor itself even though it come in a BOSCH box w/ a different number

 

P0131 HO2S Circuit Low Voltage Bank 1 Sensor 1

Circuit Description:

The PCM supplies a voltage of about 450 mV between the HO2S high and low signal circuits. The oxygen sensor varies the voltage over a range from about 1,000 mV when the exhaust is rich, down through about 10 mV when the exhaust is lean.

The PCM monitors and stores the heated oxygen sensor (HO2S) voltage information. The PCM evaluates the HO2S voltage samples in order to determine the amount of time the HO2S voltage was out of range. The PCM compares the stored HO2S voltage samples taken within each sample period and determines if majority of the samples are out of the operating range.

The PCM monitors the HO2S voltage for being fixed below a predetermined voltage. If the PCM detects the voltage is below a predetermined voltage, this DTC sets.

*The PCM sets this DTC when the vehicle runs out of fuel.
*Heated Oxygen Sensor (HO2S) wire: Sensor pigtail may be in contact with the exhaust manifold or the exhaust system.
*An oxygen supply inside the HO2S is necessary for proper operation. The HO2S wires provide the supply of oxygen. Inspect the HO2S wires and connections for breaks or contamination.
*Inspect for an intermittent ground in the signal wire between the connector and the sensor.
*Lean injector(s)
*Fuel contamination: Water near the in-tank fuel pump inlet can be delivered to the injectors.
*Fuel pressure: System will be lean if fuel pressure is low.
*Exhaust leaks: An exhaust leak near the HO2S can cause a lean condition. Refer to Exhaust Leakage in Exhaust System.
*Vacuum or crankcase leaks can cause a lean condition.
*If the above are OK, the HO2S may be at fault.

Well, this is pretty much all the possible causes, but like Battmobile stated, chances are it's f#&@^! up from being bent. The wiring is apparently sensitive also - it provides an oxygen supply to the sensor. Good luck!

 

It is your front driver O2 sensor. I broke mine when I was taking my Y-pipe off. A bolt was frozen where the pipe mates to the manifold. Like an idiot, I banged on the bolt hard, not thinking that the fragile sensor was plugged in right behind there. My car stumbles some and runs rich (can smell it) just like yours. Got the same code. I'll fix it tomorrow.

 

</font><blockquote><font size="1" face="Verdana, Helvetica, sans-serif">quote:</font><hr /><font size="2" face="Verdana, Helvetica, sans-serif">Originally posted by 11 Bravo:
<strong>It is your front driver O2 sensor. I broke mine when I was taking my Y-pipe off. A bolt was frozen where the pipe mates to the manifold. Like an idiot, I banged on the bolt hard, not thinking that the fragile sensor was plugged in right behind there. My car stumbles some and runs rich (can smell it) just like yours. Got the same code. I'll fix it tomorrow.</strong></font><hr /></blockquote><font size="2" face="Verdana, Helvetica, sans-serif">now that i think about it.. about 1 month ago i had the same prob coming from a stop light. The car stumbled like it was about to cut off from running rich. Then it cleared up. Maybe it finally just went bad. Oh well, ill swap out the sucker for a new one this weekend or the first of the week. Im beting that was my problem..... shew im so paranoid now about everything breaking <img border="0" title="" alt="[Eek!]" src="gr_eek2.gif" />

after a 918 gives way then you freak out about every small thing
<img border="0" alt="[guns]" title="" src="graemlins/gr_guns.gif" />

 

thanks everyone... im hoping thats my prob with the sputtering down low.. Its probably dumping way to much fuel which would explain why the car acts weird easing from a slow roll. Its funny the 0131 code came on while/right after this happened also so i guess thats a dead give away. I never got a 131 SES light untill i hit that damn 02 sensor argh... musta wacked it outta shape <img border="0" title="" alt="[Sad]" src="gr_sad.gif" />

 

mine did that once...cleared itself up afterwards...it ran like dogsh%t when it was doing it...exactly like you are describing...like it was loading up with fuel LOL

 

</font><blockquote><font size="1" face="Verdana, Helvetica, sans-serif">quote:</font><hr /><font size="2" face="Verdana, Helvetica, sans-serif">Originally posted by Fireball:
<strong>mine did that once...cleared itself up afterwards...it ran like dogsh%t when it was doing it...exactly like you are describing...like it was loading up with fuel LOL</strong></font><hr /></blockquote><font size="2" face="Verdana, Helvetica, sans-serif">thats the thing lol.. when i went out the car was fine for like `10 mins.. came to a stop and backed up, then pulled ahead and the car started crapping out lol <img border="0" title="" alt="[Smile]" src="gr_stretch.gif" />

once i finally got moving the car seemed fine. First thing that came to mind was SPRING BREAKING!! lol but when she ran fine from 40+ i ruled that out. Gotta be a crappy 02 then

 

mine only happened one time but it would come and go then eventually threw that code. A spring will not throw the code you listed <img border="0" title="" alt="[Wink]" src="gr_images/icons/wink.gif" />