I am having 2013 Ford fiesta se sedan and noticed my car is juddering while in full throttle and getting check engine light flashing at same time and less power every time while I stop and move, I recently visited local auto repair center and they checked all my spark plugs, fuel injectors and compression test and told me everything works good but still my problem stays on what would be the actual problem hoping for best answer and thanks in advance.
What makes this problem better or worse?
It’s worse when it’s in full throttle
How long has your 2013 Ford Fiesta had this problem?
RepairPal Certified shops can diagnose and repair your 2013 Ford Fiesta. They provide transparent pricing with a minimum 12-month or 12,000-mile warranty on repairs and services.
Hi, this is Bo, an auto expert on RepairPal's Car Genius team!
If your engine check light is flashing when you're at full throttle, that's a sign of a misfire. Even though your spark plugs, fuel injectors, and compression checked out, the problem could still lie with the ignition coils. When an engine is under heavy load (like full throttle), weak or faulty coils can struggle to fire properly. It's also worth checking for air leaks in the intake system, clogged catalytic converters, or fuel delivery issues that may only show up under hard acceleration.
If the light’s flashing, avoid pushing the engine too hard—it can cause damage. Get it scanned again to see if any more specific misfire codes (P030X) show up.
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