Quick question... 2 or 4 o2 sensors?

S

Synned

took tubgirl on a date and got banned

Mar 31, 2005

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Philly

Aug 29, 2005

#1

• Aug 29, 2005

• #1

Do our cars have 2 or 4 o2 sensors? I went to autozone to get new o2's and the guy asked me before or after cats after I told him the year/model of the car. I got the after cat ones but I don't even see o2's after the cats. Do we have them? Also the haynes manual doesn't say anything about them. And if we don't have any...can I use these in the front as well or do I need different kind of o2's? Thanks guys,

 

V8302stangs

Founding Member

Dec 16, 2001

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San Jose, CA

Aug 29, 2005

#2

• Aug 29, 2005

• #2

We have 2. But we have 4 cats. On the 96+ 4.6L they have four. Ours are before the cats which is why we don't need MIL eliminators when getting offroad pipes like they do for the 4.6s.

 

S

Synned

took tubgirl on a date and got banned

Mar 31, 2005

991

1

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Philly

Aug 29, 2005

#3

• Aug 29, 2005

• #3

So can I use the ones they gave me for the front 2 or are they different?

 

V8302stangs

Founding Member

Dec 16, 2001

211

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San Jose, CA

Aug 29, 2005

#4

• Aug 29, 2005

• #4

good question I would try checking the part numbers online

 

M

Mac-man

New Member

Nov 7, 2003

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south texas

Aug 29, 2005

#5

• Aug 29, 2005

• #5

if he sold u some thinking they are like the 96+ stangs the back ones will not work, u will need the front o2 sensors for it to accurately read the air fuel ratio. the back ones only read the change in readings from before the cats to after the cats. to make sure the catalytic converters are doing there job. u will want to get the forward o2 sensors.

 

mo_dingo

20+ Year Stangneter

Aug 26, 2003

3,031

2

58

Tucson, AZ

Aug 29, 2005

#6

• Aug 29, 2005

• #6

You want the ones that go "before the cats"

The ones that go after the cats are for emissions output monitoring only. That is why the OBD-II cars don't need an emissions check for 5yrs.
Scott

 

urban96

bubb rubb says:"woo woooooo"

Founding Member

Sep 24, 2002

3,464

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69

Syracuse, NY

Aug 29, 2005

#7

• Aug 29, 2005

• #7

some of the 99+ cars had 6 cats