What's the best way to remove O2s

1998 MERCURY MYSTIQUE
90,000 MILES
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HUTCH
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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!
Apr 5, 2012 at 5:19 PM
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SATURNTECH9
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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.
Apr 5, 2012 at 5:22 PM
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HUTCH
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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!
Apr 5, 2012 at 7:23 PM
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SATURNTECH9
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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.
Apr 6, 2012 at 2:52 AM