i have a 93 acura integra and when i start it up it idiles at 1 1/2 grand but when it warms up it drops to about 200rpm and just stays thier. Then when i rev the engine it spudders alot. The RPMs have a hard time climbing up i already changed the fuel filter, spark plugs, spark plug wires and the disributer. also had to put it to tdc and then set the disributer to 180. but still acts up if can help me with this prob please answer.