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Old November 21st, 2018, 21:11
lawsoncl lawsoncl is offline
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Join Date: Jan 2006
Location: North Idaho
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Re: Sudden drop in fuel economy

Quote:
Originally Posted by XJ99JEEP View Post
I just had a sudden drop in my fuel economy that is pretty noticeable. I donít see any leaks in any fuel lines or anything. Is there a chance that my O2 sensors finally took a crap or that my map sensor is bad. Any opinions that could lead to a resolve?

Possibly. Is the engine fully warming up? I'm thinking stuck thermostat which should be obvious on the dash or a bad coolant temp sensor which can be tested with a multimeter.
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