Heated O2 sensors
TGO Supporter
Joined: Nov 2001
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From: Maryland; USA
Junior Member
Joined: Jan 2003
Posts: 13
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From: Maine
I had to put a heated O2 in my 89 GMC k1500 w/TPI 350 because of my headers and free flow exhaust w/ no cat. At idle the stock O2 would cool down too much. It runs better than it ever has, especially at idle.
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FormulasOnly
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Sep 10, 2015 09:07 PM