Tune Up
August 2026 · Lake Wales
2013 Volkswagen Jetta

What Causes Sluggish Acceleration with a Check Engine Light?
What the customer reported
The vehicle owner noticed that the check engine light was on and the vehicle was sluggish to accelerate.
What we found and did
The technician found that the #2 ignition coil had failed, three coil connectors were broken, and the spark plugs were fouled and incorrect for the vehicle. The team performed a tune-up, which included replacing the #2 ignition coil, the three broken coil connectors, and the incorrect spark plugs. They also conducted a basic inspection of related components and system functions to ensure everything was operating correctly.
Result
After the repairs, the vehicle accelerated smoothly, and the check engine light was no longer illuminated.
Pro tip
Sluggish acceleration can often be traced back to ignition coil issues. Replacing faulty coils and connectors promptly can prevent further engine performance problems and keep repair costs down.
