I have a 2009 Škoda Octavia. The engine has been swapped to a Volkswagen engine (since both brands are made in the same country/group). The original engine was a 1.6L, but it now has a 2.0L engine installed. The fuel pump is also from a Volkswagen.

Sometimes, the 'EPC' light turns on on the dashboard. When this happens, the car loses power, feels sluggish, and doesn't accelerate properly. What could be causing this issue?"

⟐ Commented July 26, 2026 at 17:32 MST