There are 2 fuel filters 1 in tank and the other is on the subframe underneath the back seats.
Is it coughing and sputtering?
Is it over loading, puffing smoke?
Is there a miss under the hood?
If there are no codes it's something simple.
You're just going to have to seek it out and kick yourself for not thinking of it sooner.
Vac leak.
Spray the vac lines down with starting fluid. If it idles up while doing this you have a leak.
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