[L98] How Hard Is It To Replace The O2 Sensor? - Corvette Forum

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Old 02-20-2015, 02:54 PM
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[L98] How Hard Is It To Replace The O2 Sensor?

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Old 08-21-2004, 06:03 PM   #1
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Default [L98] How Hard Is It To Replace The O2 Sensor?

Folks,

How hard is it to replace the O2 sensor on an L98? Do I really need to "elevate" like the service manual says?

Getting in deeper and deeper...

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Old 08-21-2004, 06:22 PM   #2
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I can reach mine from the top or the bottom. You may have to go underneath to disconnect the pigtail from it's connector. After that, put a 7/8ths" box or open ended wrench on it and turn counterclockwise. To reinstall, reverse the process. If it is not a NEW sensor, you're installing, put a little anti seize on the threads, only. It's easier than changing to oil.

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Old 08-21-2004, 07:40 PM   #3
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Quote:
Originally Posted by CFI-EFI
I can reach mine from the top or the bottom. You may have to go underneath to disconnect the pigtail from it's connector. After that, put a 7/8ths" box or open ended wrench on it and turn counterclockwise. To reinstall, reverse the process. If it is not a NEW sensor, you're installing, put a little anti seize on the threads, only. It's easier than changing to oil.

RACE ON!!!
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Old 08-22-2004, 12:23 AM   #4
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Just did mine. Piece of cake. I have a lift, so I had it easy. As noted, disconnect electrical lead, unscrew and replace. I did notice a slight increase in throttle response and a slight improvement in the idle.
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Old 08-24-2004, 02:45 PM   #5
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when I did mine on an '85, it was suggested to me to 'warm' the car up a little to help with the removal of the old one. It was a long time ago, but I think I ran the car for about 1 minute. You don't want the exhaust pipe hot, that's for sure.
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Old 08-24-2004, 03:40 PM   #6
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Thanks, everybody!

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Old 08-24-2004, 03:45 PM   #7
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