Acura RL engine cuts out around 4000 RPM causing coil failures on Acura RL

Some Acura RL owners report experiencing engine cut-outs around 4000 RPM, which can lead to coil pack failures. This issue may put stress on the coil pack, resulting in misfires and rough idle conditions that affect performance, particularly noticeable at idle. Additionally, some owners find that major mechanical problems can contribute to these performance issues, including rough idling. High back pressure in the exhaust system is also cited as a potential cause for the engine cutting out at this RPM, which can further impact the coil pack's performance. To resolve this issue, it is essential for owners to diagnose the root cause, checking for back pressure and other mechanical problems. Regular maintenance, including inspecting and replacing worn-out components like coil packs, is recommended to prevent these engine cut-outs and associated failures.