94 mustang gt running rough

The Midnight

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Rough idle and acceleration, I have changed the plugs, wires, cap and rotor and cleaned the MAF sensor, any ideas what it could be?
 

CC'S95GT

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dirty fuel filter? Clogged cats?
do you have any mods?
have you tried to pull codes? you can have a code set without the CEL being on.
 

Curry_Hurry

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Possible vacuum leak as well. If you have a scanner check the IAC counts.

If not use a can of brake clean, spray around intake/vacuum lines and if rpms increase there you go.
 

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