Question about Ford Explorer
That sounds like a possibility. Your engine management system has a cold start circuit. It is equal to a choke. It will keep the mixture rich and limit the engine spark advance. Both affect performance.
Autozone and Oreillys will do a free scan which may pick this up. You would need to change the correct sensor which is usually different than the sensor that operates the dash gauge. A "cold start" condition is a normal occcurence; the duration of the Cold start is something the scanners may not catch.
These types of problems would show up in O2 problems and Rich bank conditions after your Catalytic converter starts complaining. This should not cost much to get you back to 100%.
Posted on Aug 31, 2010
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Posted on Jan 02, 2017
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