Nissan Pathfinder engine hesitation and stalling issue with starting problems, suspected ECU replacement needed on Nissan Pathfinder

Some Nissan Pathfinder owners report experiencing engine hesitation, stalling, and starting problems, which may lead to suspicions of needing an ECU replacement. These issues can stem from various factors, including fuel system and ignition problems that cause the engine to stall. Additionally, an off engine timing can result in stalling and misfiring, affecting the vehicle's overall performance. Many owners also note that starting difficulties, particularly in third-generation Pathfinders (2004-2012), manifest as no crank, intermittent starting issues, and electrical problems as the vehicle ages. Some drivers have reported intermittent hesitation akin to a misfire, especially under heavy loads, while others experience symptoms of the engine running unevenly, indicating potential underlying issues. Cold weather can exacerbate starting problems, with reports of unsteady idle and difficulty firing up. Given these common concerns, it is advisable for owners to address these known issues before prematurely concluding that an ECU replacement is necessary.