Question about 1991 GMC Sonoma
My 1991 Sonoma idals really low and will not pass Hamilton County's Emissions Testing. It has a 4.3 fuel injected v-6, and has almost 190,00 miles on the engine. What would cause this problem?
You may have a worn out O2 sensor or catalytic converter. Maybe time for a tune-up?? Is the check engine light on?
Posted on May 29, 2010
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Posted on Jan 02, 2017
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