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O2 Sensor Questions

Started by sweeedespeed, Feb 19 2008 02:51 AM

24 replies to this topic

#1 sweeedespeed

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Posted 19 February 2008 - 02:51 AM

I have a bad o2 sensor. I ordered the rear one, but I think it may be the front sensor. Is there any way I could use a rear sensor on the front?
97 854 T5- Speedtuning Tune, OBX Turboback, Enkeis, QBM Spacer, Samco's,
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#2 lookforjoe

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Posted 19 February 2008 - 02:59 AM

QUOTE (760S @ Feb 18 2008, 09:51 PM) <{POST_SNAPBACK}>
I have a bad o2 sensor. I ordered the rear one, but I think it may be the front sensor. Is there any way I could use a rear sensor on the front?



Isn't the only difference the length of the harness? The signal is all the same - if it has the same # of wires & the same connector there should be no reason why not.
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Posted 19 February 2008 - 04:10 AM

QUOTE (lookforjoe @ Feb 18 2008, 09:59 PM) <{POST_SNAPBACK}>
Isn't the only difference the length of the harness? The signal is all the same - if it has the same # of wires & the same connector there should be no reason why not.

+1... its most likely the front one

#4 sweeedespeed

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Posted 19 February 2008 - 04:20 AM

I had a code thrown dealing with the o2 sensor. According to the info computer, I am only getting 17MPG, but I went around 110 miles on about 4 gallons of gas. Also, the car runs fine without boost, but is not the same with it- it's sluggish and almost bogs. Would those be o2 sensor problems or maybe a MAF?
97 854 T5- Speedtuning Tune, OBX Turboback, Enkeis, QBM Spacer, Samco's,
IPD Short Ram, IPD Polys, HID's, Debadged, What horns?
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#5 garbergtsi

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Posted 19 February 2008 - 01:10 PM

sounds like a boost leak to me...

#6 sweeedespeed

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Posted 19 February 2008 - 01:35 PM

but would that be related to the CEL?
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IPD Short Ram, IPD Polys, HID's, Debadged, What horns?
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#7 7 VII 7

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Posted 19 February 2008 - 01:45 PM

what was the CEL code?

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Posted 19 February 2008 - 04:18 PM

QUOTE (760S @ Feb 19 2008, 08:35 AM) <{POST_SNAPBACK}>
but would that be related to the CEL?

Why wouldnt it, i mean your getting the wrong AF ratios going into the engine which could read out with a bad 02 but i would still replace them since you probably have over 100K on the sensors.

#9 sweeedespeed

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Posted 19 February 2008 - 05:14 PM

yeah, my car's gor 150K on her. I guess it makes sense- just added my new samcos before it went to stuff on me
97 854 T5- Speedtuning Tune, OBX Turboback, Enkeis, QBM Spacer, Samco's,
IPD Short Ram, IPD Polys, HID's, Debadged, What horns?
Making grocery getting fun!

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Posted 19 February 2008 - 05:17 PM

QUOTE (760S @ Feb 19 2008, 12:14 PM) <{POST_SNAPBACK}>
yeah, my car's gor 150K on her. I guess it makes sense- just added my new samcos before it went to stuff on me

ohh yeah replace those sensors, if you cant afford both then just do the first one, the second one is pretty much useless in a way. Atleast that way you know its not a O2 issue and you can go from there.

#11 7 VII 7

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Posted 19 February 2008 - 05:22 PM

QUOTE (binglax09 @ Feb 19 2008, 12:17 PM) <{POST_SNAPBACK}>
ohh yeah replace those sensors, if you cant afford both then just do the first one, the second one is pretty much useless in a way. Atleast that way you know its not a O2 issue and you can go from there.

the one PRE cat is for your AFR (air fuel ratio) and should help your MPG... the 2nd one is basically a way to see if your CAT is bad... I had a clogged CAT and the CEL was not on.. so go figure.

you can clean your O2 sensors by running a blow torch over them 5 times really quick alrong the sensor that goes into the piping.

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#12 sweeedespeed

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Posted 19 February 2008 - 10:41 PM

so since I have a new rear sensor, should I just use it in the front?
97 854 T5- Speedtuning Tune, OBX Turboback, Enkeis, QBM Spacer, Samco's,
IPD Short Ram, IPD Polys, HID's, Debadged, What horns?
Making grocery getting fun!

#13 7 VII 7

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Posted 19 February 2008 - 10:44 PM

QUOTE (760S @ Feb 19 2008, 05:41 PM) <{POST_SNAPBACK}>
so since I have a new rear sensor, should I just use it in the front?

it will be VERY long.. you would have to ZIP tie it off... but what would you put in the rear?

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#14 Karlson

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Posted 19 February 2008 - 10:48 PM

QUOTE (7 VII 7 @ Feb 19 2008, 07:44 PM) <{POST_SNAPBACK}>
it will be VERY long.. you would have to ZIP tie it off... but what would you put in the rear?

Dave, why do u make it so confusing smile.gif


If the car is 150k miles and o2 sensors never been changed before, and his code is not a clogged o2 sensor, then a biggest possibility that front o2 sensor gone bad.
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#15 sconeman

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Posted 20 February 2008 - 12:22 AM

QUOTE (760S @ Feb 19 2008, 03:51 AM) <{POST_SNAPBACK}>
I have a bad o2 sensor. I ordered the rear one, but I think it may be the front sensor. Is there any way I could use a rear sensor on the front?

check this out LINK TO DISCOUNT

you might be able to get a good deal on o2 sensors here. I just emailed the guy about a pair. If I find out a price I'll let you know.

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#16 sweeedespeed

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Posted 22 February 2008 - 05:01 AM

I got the code pulled- Rich in bank 1, code 0172. O2?
97 854 T5- Speedtuning Tune, OBX Turboback, Enkeis, QBM Spacer, Samco's,
IPD Short Ram, IPD Polys, HID's, Debadged, What horns?
Making grocery getting fun!

#17 7 VII 7

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Posted 22 February 2008 - 02:41 PM

check the vacuum line that goes to the intake manifold on the passenger side... it is right near the t-stat under the coolant hose... that can tear and cause this CEL

I had it... along with misfire codes.

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#18 FINN

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Posted 22 February 2008 - 08:13 PM

QUOTE (760S @ Feb 22 2008, 12:01 AM) <{POST_SNAPBACK}>
I got the code pulled- Rich in bank 1, code 0172. O2?



yup.

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#19 7 VII 7

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Posted 22 February 2008 - 08:17 PM

QUOTE (FINN @ Feb 22 2008, 03:13 PM) <{POST_SNAPBACK}>
yup.

mine was the vacuum line... which is much cheaper to fix.

well a little bit cheaper

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#20 sweeedespeed

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Posted 25 February 2008 - 02:18 AM

yeah, I replaced the hoses with the stylin' kit a while ago, I checked the hose and it still looks good.
97 854 T5- Speedtuning Tune, OBX Turboback, Enkeis, QBM Spacer, Samco's,
IPD Short Ram, IPD Polys, HID's, Debadged, What horns?
Making grocery getting fun!
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