1994 idle problem
 

The car stumbles when in idle only. It does not die.
Other than that it drives great. I replaced the air and fuel filters, spark plugs and ignition wires, distributor cap and rotor, coolant sensor and cleaned the throttle body. I does not matter whether the air conditioner is on or if the car is in or out of gear. It is a 2.2 engine with auto trans. The car was made in Japan. The check engine light does not come on.
Any sugestions. It only happens when the gas tank is 1/2 full or more
Thanks
Strafford

you seem to replace the right parts... can't think of what causing it.

Thank you for responding, I am a driveway mechanic who likes challenges but this has me stumped!:cool:
Strafford