O2 Sensor problem
April 2011 ROTM
Joined: Mar 2009
Posts: 22,024
From: Tokeland, Washington
ROTM Winner's Club
yep codes may tell us more on the issue. may not but every little bit of info helps. check all your grounds, should be a ground strap on the driver side front of motor that goes to the frame. the 98 is different from the lt so the other ground may be different but i have one on the side of the block by the starter and one on the passenger side front of motor and one on driver side front of motor.
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In the Staging Lanes
Joined: Sep 2010
Posts: 48
From: Moncton N.B Canada
You have two oxy sensors before the cats, and two after the cats. The two after monitor the cats to make sure they're performing as they're supposed to. If not, it will trip a code and the check engine light will go on. Those two sensors don't alter engine runnability like the pre-cat ones will. That's why you need to see which error code you get, it will specify which sensor(s) it is.
Thanks Again.
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maybe next time
82-92 Transmission & Differential
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