The car idles fine. It revs up but slowly drops RPMs.
Hi there: The idle is controlled by the idle control valve (https://www.yourmechanic.com/services/idle-control-valve-replacement), mass air flow sensor (https://www.yourmechanic.com/services/mass-airflow-sensor-replacement), and throttle body (https://www.yourmechanic.com/services/throttle-body-replacement) of a fuel injected motor. Any of these components could be dirty, damaged, or have faulty wiring that is...
I just did a tune up and now my truck shakes when speeding up from about 1500 to 2000 rpm. Smooths out when pressing gas harder. [Engine](/topics-engine-ford/) sounds better and stronger than before tune up also noticing more tran...
I just did a tune up and now my truck shakes when speeding up from about 1500 to 2000 rpm. Smooths out when pressing gas harder. [Engine](/topics-engine-ford/) sounds better and stronger than before tune up also noticing more tranny slip between gears. Mechanic's Assistant: Have you noticed an increase in fuel consumption? And how does the vehicle start—same as usual? Same as usual and decrease in fuel consumption. Mechanic's Assistant: What is the make/model of your '00 car? 2001 ford f250 5.4 Mechanic's Assistant: Are you fixing your F250 yourself? What have you tried so far? Done it all myself. Havent done anything yet. My first thought was a tire balance and rotation.