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Q: no acceleration going up hills on 2001 Ford Focus

Rookie cbe0621eac06868b3efe0d8d1d3611e23c60d3114864ea2ec19a68cfbd3eebab
i just had the valve gasket cover replaced along with the plugs and wires. that very same day i started having trouble accelerating up hills no matter how much gas i give the car just creeps along
(1) Answer
I suspect that there might be a problem during installation of the spark plugs or wires. A vacuum line may have been knocked off or a sensor not plugged in. Bring it back to the shop that performed the work for a diagnostic. Explain the details of the symptoms so they can recheck their work.