How do i find the air filter for the cab of my 2004 dodge dakota

possibly --- have a look behind the glove box above the blower motor

there is no serviceable fuel filter. It is part of the fuel pump assembly and serviced when you change the pump.

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try picking up a blower motor resistor, about 10-20 dollars at a local part store. then check this blog out. I have replaced 4 in my 2004 dakota, Takes about 10 minutes to replace, located on passanger side of truck above floor.
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The '01 dakota standard cab trucks are not equipped with a cabin air filter. Until recently not many vehicles were equipped with them.

When you recharged the vehicle did you have it vacuumed?

Check the spark plugs and catalytic converter.

replace the air filter,pcv valve and spark plugs if over 60 k and the wires are original replace dist cap rotor and wires also then clean the throttle bore spotless with cab cleaner and a rag scan for any codes and sensors out of range there is no fuel filter (it is part of the fuel pump)

It does not have a cabin air filter.. No worries about changing one.

No Cabin Air filter listed in NAPA's catalogs.

check for dirty or pluged cabin filter.normaly you will this find this under the dash on passenger side. also check in shop manual.