thanx for the documents, they are another resource. unfortunately, i'm afraid it is not the motor mounts. i took the car for a drive yesterday and found that it is hard for it to hold idle. the "economy" gauge is up to the middle when it is in idle. the engine does not die, instead it feels the computer compensates keeping on the gas. it still rumbles and runs erratic. when i apply the gas, it seems that the harder i push the less power there is going to be. could it be the mass airflow sensor or something else related to the throttle?