I have a miss and rough idol till it warms to operating temp, I can either start it up and wait till the temp is up or drive 1 mile turn it off and sit a minute then turn it back on and wala it idols perfect. Takes off with no miss runs great. ok lets give you a history of what I did a year and a half ago till now. 1 owner grandma, with 52,000 miles and receipts of everything done to the car. I now have 58,500 on it. Gas millage went bad and I replaced every flicking thing to get it right.( list below ) Finally the next to last thing Throttle Base Censor brought the mileage on the highway up to 17 mpg and 13 in town. I can live with that sense the book says 14 in town 19 out. ok I then have a miss and rough idol untill warm. I didn't change the fuel filter till last because I couldn't find it, it wasn't where it was suppose to be, it was behind my power steering pump between the block. I had to remove the pump to replace the filter. Yes the filter was dirty as mud. I ran the tank of gas I had out with Gum-out injector cleaner also then refilled tank with shell gas and more Gum-out thinking my 4 month old injectors ( 2 ) on my 87, was dirty from my dirty fuel filter I didn't change. The motor idling got better and power I didn't know I had was restored but can't get the idling right. I feel it has to do with a injector screen clogged or some thing with the gas. I have used 1/4 tank of the new gas and gum-out so far. Anyone with this ordeal before. I know the fuel filter should of been long before everything else. Forgive me please. HELP

Distributor cap
Rotor
Spark Plugs
Spark Plug Wires
Coil
Vacume Hoses
Fuel Injectors
Air Filter
Throttle Base Kit
Oxygen Sensor
Coolant Temp Sensor
Throttle Position Sensor
PCV and gromets
Fuel Filter
Fuel Pump Relay
Tested EGR and other vacume parts to be ok