how to replace a 02 sensor on 85?
Thread Starter
Instructor
Joined: Jul 2005
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From: henderson nevada
how to replace a 02 sensor on 85?
Can any one tell me how to replace the 02 sensor on my 85. I posted the real bad gas milage thread. Thanks for reponses. Want to if I could replace the sensor myself if possible. Get nothing but more trouble at local Vette shop! Any brand to recomend. Car is all stock. Had spark plugs changed, throttle body cleaned, new filter but never ck. the 02 sensor. My mpg is like 12-13 city driving (Lots of stop and go, Vegas) so as per forum advice gonna change 02 sensor. No gas smell, passed smog so I believe injectors are O.K. If 02 senor is not it, what else might it be. Would I smell gas if there was a leak anywhere? Thanks for your HELP once again
Race Director
Joined: Feb 2004
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The o2 is in the drivers side exhaust manifold. Unplug the connector, turn the sensor counterclockwise with a 7/8 wrench. Install the new one and reconnect. The new one will already have anti seize applied to the threads to prevent galling.
Thread Starter
Instructor
Joined: Jul 2005
Posts: 202
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From: henderson nevada
Originally Posted by Pete K
The o2 is in the drivers side exhaust manifold. Unplug the connector, turn the sensor counterclockwise with a 7/8 wrench. Install the new one and reconnect. The new one will already have anti seize applied to the threads to prevent galling.
Team Owner
Joined: Dec 2000
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From: SE NY
Cruise-In II Veteran
First you can use field service mode (details on my site) to see if the ECM is going into and staying in closed loop mode.
If you replace the O2 sensor do not touch no get dirty the sensor end of it while handling and installing.
If you replace the O2 sensor do not touch no get dirty the sensor end of it while handling and installing.
