100 oct LL - Pontiac GTO Forum
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post #1 of 2 (permalink) Old 12-03-2016, 07:29 PM Thread Starter
 
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100 oct LL

So in reference to my earlier thread about the car running rough and what not, tonight it finally threw the check engine light with codes P0171 and P0174. So my question is will one tank of low lead gas be enough to foul up the O2 sensors?
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post #2 of 2 (permalink) Old 12-04-2016, 12:00 PM Thread Starter
 
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A scan tool and the actual gm service manuals are great. Looks like my 02 sensors are operating within range but my lt fuel trim is only at 10-11% so I guess one, if not more, of the injectors went bad.
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That image is too large. The maximum dimensions are 100 by 100 pixels. Munday The Lounge 6 08-03-2004 09:29 AM

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