How many o2 sensors on a factory '90 5.0?

jastang

Founding Member

Nov 21, 2000

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Little Elm, TX

Jun 16, 2004

#1

• Jun 16, 2004

• #1

The Ford parts dept just tried to tell me that there were four. (2 fore and 2 aft of the cats) I disagree with him and tried to tell him that I was pretty sure that was only on OBDII cars, which would be '96 and up.

So, assuming I'm right and there are only two on a '90, in what year did they start putting four on?

 

Smokedawg

Founding Member

Jul 6, 2001

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Jun 16, 2004

#2

• Jun 16, 2004

• #2

2

Probably put 4 either on 94 or 96 models..more then likely 96 if there are 4...

 

QDRHRSE

New Member

Dec 31, 2002

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Palmdale, CA

Jun 16, 2004

#3

• Jun 16, 2004

• #3

two after the cats, one on each side.

 

SuperStang83

Founding Member

Mar 21, 2001

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Boyertown, Pa

Jun 16, 2004

#4

• Jun 16, 2004

• #4

Just 2. I had no idea that they put more htan 2 on any Mustang!

Jakob

 

88stangmangt

Active Member

Nov 25, 2003

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Stafford,VA

Jun 16, 2004

#5

• Jun 16, 2004

• #5

and he works at a ford parts dept store???? what a tool.

 

89MustangGX

I have nothing productive to add!

Jul 3, 2001

10,262

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Mill Creek, WA

Jun 17, 2004

#6

• Jun 17, 2004

• #6

QDRHRSE said:

two after the cats, one on each side.

Click to expand...

They're before the cats actually -- right in the very front of the h-pipe, just below the collectors.

 

Smokedawg

Founding Member

Jul 6, 2001

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48

Jun 17, 2004

#7

• Jun 17, 2004

• #7

89MustangGX said:

They're before the cats actually -- right in the very front of the h-pipe, just below the collectors.

Click to expand...

Are you guys sure they are not between the cats...

There are 2 cats on each side..I thought I remember them being right below the first one, before the 2nd one..

-Smoke

 

1

1940 'Stang

New Member

Sep 3, 2003

49

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0

West Grove, PA

Jun 17, 2004

#8

• Jun 17, 2004

• #8

The only way you'd have four in the car is if you bought two new ones and put them on your front seat!

I've done a few 5.0 to weird vehicles. There are two on the car, and they are after the collector and before the cat. They can't be after the cat because there isn't enough wire in the harness. Furthermore, you need to sniff BEFORE the cat starts burning up the gasses.

BTW, I'm looking at the FMPP catalog right now. The sensor and relay package (part M-12071-K302) only has two O2 sensors. They also tell you NOT to shorten the wires. They go where they go.

Go ask the parts guy if he has a nine inch for a Focus. Rear axle, that is.

 

Venom4.6

Founding Member

Jun 30, 2002

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Saint Louis, MO

Jun 17, 2004

#9

• Jun 17, 2004

• #9

Don't buy the o2 sensors at the dealer unless they can beat the price here.
http://www.oxygensensors.com/

 

stang22

Active Member

Jan 29, 2003

1,318

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Washington, D.C.

Jun 17, 2004

#10

• Jun 17, 2004

• #10

Smokedawg said:

Are you guys sure they are not between the cats...

There are 2 cats on each side..I thought I remember them being right below the first one, before the 2nd one..

-Smoke

Click to expand...

Yep, there are 4 cats on a STOCK H-Pipe, unless you bought an after market H-Pipe/X-Pipe with hi flow cats, then there would only be 2 and the 02 sensors would be before the cats I believe.

Tim