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How many O2 Sensors does my vehicle have and where are they located?

Tiny
SAM MUSSELMAN
  • MEMBER
  • 2004 FORD F-450
  • 6.8L
  • V10
  • 4WD
  • AUTOMATIC
  • 218,900 MILES
O2 Sensors.
Friday, June 30th, 2023 AT 9:10 PM

3 Replies

Tiny
MATHGEN
  • MECHANIC
  • 128 POSTS
Your vehicle has 3 sensors total. Two sensors are located in the exhaust pipe just past the exhaust manifolds. The third sensor is the catalyst monitor and it is in the pipe past the catalytic converter. I have attached a parts diagram.
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Saturday, July 1st, 2023 AT 6:56 AM
Tiny
SAM MUSSELMAN
  • MEMBER
  • 27 POSTS
Which o2 Sensors fit each location? Example: upstream or downstream.
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Saturday, July 1st, 2023 AT 4:07 PM
Tiny
MATHGEN
  • MECHANIC
  • 128 POSTS
Upstream are before the catalytic converter, downstream are after the cat.
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Saturday, July 1st, 2023 AT 4:24 PM

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