C4 Tech/Performance L98 Corvette and LT1 Corvette Technical Info, Internal Engine, External Engine

O2 sensor

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Old Nov 1, 2001 | 01:14 PM
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Default O2 sensor

Does anybody know how many O2 sensors are on a late (aluminum head) '86?
Is the Autozone $23.99 ( that a NY regional price or the same thruout the country) the same as the GM version both are Bosch units AZ # 12014?
Is the socket really needed, or can a box wrench be used? How about modifying a regular socket to allow wire clearance?
Sorry for all the questions, but I'm trying to take advantage of the good weather today to get this done.
Barrier
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Old Nov 1, 2001 | 01:18 PM
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Default Re: O2 sensor (Barrier)

There is one sensor on the driver's side exhaust manifold. I used the special socket, I'm not sure if there is enough space for a box wrench or not, there could be. As far as I know they are the same Bosch units.

The sensor will be pretty hard to break free at first because of some sealing compound that are on them, but then will spin off easily. The new one will already have what looks like antiseeze on it. That stuff on it melts and seals with the manifold. Don't be surprised if the stuff smokes for a few minutes after installation and firing it up. :)

Good luck, I gained back about 5 mpg after putting a new one in.
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Old Nov 1, 2001 | 01:21 PM
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Default Re: O2 sensor (Barrier)

I got mine off with an open end wrench with no problem.

Aloha,
Larry
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Old Nov 1, 2001 | 01:28 PM
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Default Re: O2 sensor (Barrier)

heat it with a torch first and a you should be able to get it with a wrench no problem
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Old Nov 1, 2001 | 07:25 PM
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Default Re: O2 sensor (Barrier)

Thanks for all the information, and help. I bought the sensor. I decided to soak the old one with penetrant, and remove it Friday.

Barrier
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