o2 snsor problem

[agentdpuble07]

i was wondering how many people had trouble with their o2 sensor (after the cat). it was going out, then i put on my greddy cat back and it killed the sensor so i changed it out and about a week later im getting the check engine light again. i was wondering if any one else with an exhaust had any problems with the sensors or what i should do

[Turbosolara]

when the check engine light on (A/F sensor malfunction) sometime it might just indicate your car runs too lean or too rich. are you at california? if so, you should have another one at the exhaust maniford.

[agentdpuble07]

im in tx and i dont know where i can get an 02 sensor simulator. i think i might need one. i have a greddy exhaust and i think thats y the indicator is coming on.

[agentdpuble07]

im in tx and i dont know where i can get an 02 sensor simulator. i think i might need one. i have a greddy exhaust and i think thats y the indicator is coming on.

[Mole]

the greddy should not kill the sensor. are you force inducted? there may be an other problem

[super_PeNiS]

my o2 sensor also went out. the o2 sensor that is after the cat. I also have a greddy , but i dont think its the greddy because i stripped the o2's screw and its loose rite now. I went to an auto shop to see how much it would cost to replace the o2 sensor. OEM would cost $129 and bosch 02 sensor would cost $89. i think u can find some online also.

[xyntax]

Naive Q for this thread: Would an A/F ratio gauge installed help determine the problem?

[agentdpuble07]

i have a short ram but it never did anything to the sensor til now. i replaced the sensor once already but now i have to do it again? i have no other upgrades other than the exhaust and the intake. would the a\f guage help

[Mole]

a/f can tell you if you are running lean or rich. the gauge by autometer does not handle that job. it just sits there and looks pretty. the a/f gauge by greddy is accurate at all levels, but its pricey.

or the SAFC II has a monitor to see if the car is knocking. if you do, then you may be running lean thus blowing the sensors.

[JoeB]

I agree, you get what you pay for with an air/fuel gauge. They can be very useful especially if you are constantly modding your car or if you have it dialed in close to limits. I think that goes for all of us with forced induction. Until the fuel system upgrade from Gadget/URD was available, we've been running lean on 1 end, rich on the other and many people as a result have blown knock sensors. The big difference in the gauges is narrow band vs. wide band gauges. If you already have a narrow-band air/fuel gauge like those from AutoMeter, one way to make it better is like what I have. I've got the Bosch M-300 Wide-Band oxygen sensor from PLX Devices http://www.plxdevices.com. This has a wide-band O2 sensor that mounts in the exhaust just like when a dyno tune is done. It sends the signal to a digital readout that is accuare to <0.1. From there, they have a wide-band to narrow-band converter so it can also be hooked up to AutoMeter narrow-band gauges. This will make the narrow-band gauge that you already have installed read like a wide-band. Again, this option is pretty expensive > $300. -JoeB

[agentdpuble07]

is the afc thing a monitor for the fuel taken into the engine if so should i get that to control the air and fuel in my car. would that solve the problem

[paradizecityz]

I have a 1998 Toyota Camry LE and i put in an intake back then and I get the check engine light, i went to get it Diagnosed and i got the error code P0171, System Too Lean (Bank 1), can someone please tell me what this mean and what I should do to fix this, I heard from my friends to change the O2 sensor but Im not sure if it is correct, someone please help me out and reply