Car sluggish and jerky in only first gear
Among the possibilities are faults in the throttle position sensor (https://www.yourmechanic.com/services/throttle-position-sensor-replacement), mass airflow sensor (https://www.yourmechanic.com/services/mass-airflow-sensor-replacement), vacuum leaks, a clogged fuel filter, defective EGR valve or control circuit, and worn out spark plugs and wires. A mechanic would simply investigate these...
Check engine light- checked 3x - gas cap replaced-spark plugs changed, PCs valve replaced - dropped 28-\> 18 mpg Mechanic's Assistant: Does the light stay on, or does it blink? On all the time Mechanic's Assistant:</b...
Check engine light- checked 3x - gas cap replaced-spark plugs changed, PCs valve replaced - dropped 28-\> 18 mpg Mechanic's Assistant: Does the light stay on, or does it blink? On all the time Mechanic's Assistant: What year is your Spark? Plugs Nov 2020 Mechanic's Assistant: Are you fixing your Spark yourself? What have you tried so far? Dealership tune up Mechanic's Assistant: Anything else you want the Mechanic to know before I connect you? Idle issues when stop in traffic