Do you have any codes? I have a 2004 and the air filter is a bear to get to. The next time i change mine I am going to use gasket silicon to make the airfilter stay in place while I wrestle the houseing back in . That way I know the filter didnt move. I Had to clean the maf sensor because it was so dirty from previous air cleaner issues. This should help youir condition alot better and i got 4 more miles to the gallon. Just use carb cleaner ans compressed air to dry it out. Spray it real good.
Thanks Dan
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Mechanic
Mechanic at school corp bus garage! Experience in fleet diesel and regular automotive.