The Best Check Engine Light Car Slow Acceleration References. When the check engine light starts flashing, you might be noticing other symptoms, especially if it is a misfire. Changing oem spark plugs and wires at recommended intervals is recommended by car manufacturers.

While accelerating, the engine requires more fuel. These will help you understand what’s causing the misfires. Web the most common causes for slow acceleration are clogged air filter, dirty mass air flow sensor (maf), clogged fuel filter, fuel pump malfunction, faulty oxygen sensor, dirty throttle body, worn spark plugs and clogged catalytic converter.