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1997 Mercury Marquis O2 sensor

Tiny
GBKINS1
  • MEMBER
  • 1997 MERCURY MARQUIS
  • 4.6L
  • V8
  • RWD
  • AUTOMATIC
  • 84,000 MILES
What's the best way to reach the upper sensor wire connector
Saturday, September 6th, 2014 AT 6:08 PM

2 Replies

Tiny
WRENCHTECH
  • MECHANIC
  • 20,761 POSTS
What "upper sensor" are you referring to? There is nothing by that name.
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Sunday, September 7th, 2014 AT 5:34 AM
Tiny
WRENCHTECH
  • MECHANIC
  • 20,761 POSTS
OK, I see now you are referring to the upstream 0/2 sensor. There are still 2 of those but they are pretty much the same. I know the plugs are very hard to reach on those. I usually use a long, thin screwdriver to release the locking tab and then pull on the wire. I use the same screwdriver to get it plugged back in later.
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Sunday, September 7th, 2014 AT 5:37 AM

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