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What's the best way to remove O2s

Tiny
HUTCH
  • MEMBER
  • 1998 MERCURY MYSTIQUE
  • 90,000 MILES
Bank 1, upstream, 98 mercury mystique, remove coil pack or what? 2.5, V6. Thanks! Now if this is not the problem how do I check for intake leak? Code P1131, THANKS!
Thursday, April 5th, 2012 AT 5:19 PM

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Tiny
SATURNTECH9
  • MECHANIC
  • 30,869 POSTS
The best way to check for a vacuum leak is let it idle and spray carb spray all around looking for the rpms going up or down stumbling or dying. Or better yet a evap smoke machine.
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Thursday, April 5th, 2012 AT 5:22 PM
Tiny
HUTCH
  • MEMBER
  • 6 POSTS
Hi saturntech9,
Hutch here Thanks for you answer, but do you know the answer to the first part of my question? What's the best way to get to bank 1 upstream sensor. Thanks!
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Thursday, April 5th, 2012 AT 7:23 PM
Tiny
SATURNTECH9
  • MECHANIC
  • 30,869 POSTS
If there is a heat shield on the exhaust manifold remove it. Then unplug the sensor and use a short o2 sensor socket with a ratchet to unscrew it.
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Friday, April 6th, 2012 AT 2:52 AM

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