i have a autometer turbo timer and it gives an o2 sensor voltage reading...
when i start my car it usually sits around 3.5...(idk if these are volts or milivolts cause its always x.xx)
but once the car is all warmed up it runs at about 4.40
and tonight i was drving around and it was sticking around 2/1.5 idk if i was going lean or what soo i kept it outta boost and got home to let it sit
Please help me out i know the narrownband o2 sensors arent the most accurate but its a large difference in volts soo i know something isnt as consistent as it usually is.

 

please help idk how im geting a 4. point anything thats really weird

 

Narrow band 02s are pointless for trying to figure out what your AFR. You need a wideband 02 on your car to know what the exact AFR is.

Blaze

 

doesnt this give u a pallpark reading tho... i mean for it to make a huge change like that some factor has changed...
adn IDK whats wrong with my autotimer alll messed up readings like that....

 

The narrowband O2 sensor used on our Honda's spit out a voltage in the range of .1 - .9v, which is 100 - 900mV. Not sure what numbers your turbo timer is spitting back at you.

And yes, narrowband O2 sensors are garbage for anything other than indicating rich/lean.

 

Narrowband lambda sensors give 0-1 volt signals, so who knows what the hell the autometer turbo timer is telling you. Maybe you have the wrong wire hooked up and you are actually reading one of your voltage divider sensors, such as a coolant sensor, TPS, etc.

I had a friend hook up a SAFC wrong with the TPS and MAF wires switched. Talk about some erratic behavior.

 

tahahha ok ill check it out i went on shopkey and got a diagram.... I also dont know if the ground matters b/c my ground is hooked up to my pgmfi ground..... and on the apexi diagram (which i just located now ) says it should be hooked up to a different ground, but for the o2 wire i believe it was white its been a while
Thanks for the help guys

 

wtf could the ground source effect the reading no right>??