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Speedy Squirrel Speedy Squirrel is offline
Rocket Scientist
Join Date: Jun 2008
Location: Detroit
Posts: 938
Originally Posted by Ronnie's.930 View Post
Thanks for the info, Speedy. Where do I check the O2 voltage?
First, get the car up to normal oil temperature by going up on the freeway and stomping a Mustang. (That last part is not per the manual).

Disconnect the O2 sensor plug connection on the left-hand side at the rear of the
engine compartment.

On the SENSOR end of the plug, check the voltage between the terminal with the Green wire and engine ground. It should be in the range of 0.1V to 0.95V. If it is running rich, it should be somewhere around the 0.8V to 0.95V range.
Old 01-23-2013, 07:27 PM
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