poor mpg 05 Dodge Caravan?

utobobo

New member
only 22 k miles on it, getting 26 or 27 mpg. then it dropped to 22 on next tank. Back up to 26 for 5 tanks then back to 22. Now it is staying at 23. New plugs, air filter, Lucas in several fill ups. It runs fine, good acceleration and shows no codes at checker when they checked it with there code reader. Anyone have any ideas?? DON
I was hoping to get it back to 26. that is what it averaged for the last year that I have owned it.
Ethanol drops it a little but not that much, thinking the catalytic converter might be bad, but that would show codes I think.
 
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