01transampower

iTrader: (9)

Well I have an air/fuel ratio gauge and its one of those splice in ones. Yeah yeah i know i sound cheap and yes i will get the right one but i can buy go fast parts for what i would spend on a gauge. Well i looked in my repair book to figure out which wire to splice to and im pretty sure it was suppose to be the purple one. Well now the gauge needle bounces around so its not spliced properly as well as. So I have no idea what to do. But now my gas milage has gone to ****. Could I of screwed up my O2 sensor? I'm assuming this is the problem. Any suggestions?

RARON455

iTrader: (35)

Is the ses light coming on?

boostedbird38

iTrader: (7)

if you got a narrow band a/f gauge hooked up, its supposed to jump all over the place while the engine is running.

those narrowbands only read from 0.1V to 1.0V your pcm is constantly changing fuel delivery based on readings from the MAF and the O2's. so the gauge is going to bounch around.

when you floor it, the gauge should peg all way to the 'rich' side. thats the only "real" reading you're gonna get.

01transampower

iTrader: (9)

Ok thank you for that info. No my ses light isnt on. But it just seems like the milage has gone to crap since hooking the gauge up.

boostedbird38

iTrader: (7)

no prob

did you change anything else at all ?

01transampower

iTrader: (9)

Nothing at all. I know it could be hard to tell exact milage buton these cars but mine is my DD so I know what it gets and its not really there anymore. Should I just replace to o2 or should I check some other stuff first?

boostedbird38

iTrader: (7)

if you just spliced into that wire i really doubt you ruined your O2.

could just be a bad batch of gas...or your right foot !!

01transampower

iTrader: (9)

Probably both lol. But cant help that right foot from slipping. yea in colorado gas is up and down. I try to only use shell or conco usually dont have problems with them.

The Mighty Texan

iTrader: (4)

Have you checked your mpg the correct way or are you just going by the gauge on the dash?

01transampower

iTrader: (9)

I dont checked it the correct way all the time. I probably should but I know rough numbers considering the car see's 600-700 miles a week.