no my freind , i am sorry for miss-understanding. but the guy there in the garage has played with the throttle i came back to the garage they didnt admit of touching the throttle. they told we didnt do anything to the throttle. but i discovered this when i pushed the pedal i felt it become heavier, then i came sure they played with the throttle. also when i drove the car i found problem when shifting ( my focus is automatic gear). i will explain in more: now suppose i am driving my car and the gear now is 4 , then suppose i cick the pedal down, then the car will shift to 3 and the RPM will raise to 6 in order to push the car then the car will automatically will shift to 4. but now after problem in throttle, when i cick down the car dont shift even the RPM raise to 7. i am trying to adjust the throttle to make it softer to the original state ( i will do this when i am at home at off day). thanks for all of u.