Chevrolet V3500 performance issue with bogging down between 2000 and 3000 RPM despite normal idle on Chevrolet V3500

Some Chevrolet V3500 owners report experiencing performance issues where the vehicle bogs down between 2000 and 3000 RPM, even though the idle remains normal. This problem appears specifically during acceleration in that RPM range, suggesting potential issues with the engine's performance. One common cause could be related to the fuel system, such as a faulty fuel pump or fuel delivery problem, which may lead to the bogging sensation. Additionally, a worn distributor gear has been identified as another potential culprit, causing acceleration problems despite normal idle operation. Furthermore, fluctuations in RPM and engine performance may also stem from issues with the idle air control (IAC) valve. To address these concerns, owners are advised to check the fuel system components, inspect the distributor gear for wear, and ensure the IAC valve is functioning correctly to maintain stable engine performance.