Honda Accord 1996 running rich

Hi, my name is Devin. I am an auto repair expert with the Car Genius team here at RepairPal. I'm sorry to hear you're having trouble with your Accord. Running rich and being in limp mode can indicate a few possible causes. Since the vehicle cuts out after 3000 RPMs and runs rich (too much fuel in the mixture), the issue could be related to the engine management system, such as the mass airflow (MAF) sensor, oxygen sensors, or the fuel injectors. A malfunctioning MAF sensor can cause incorrect readings, leading the engine to inject too much fuel. The oxygen sensors monitor the air/fuel ratio; a faulty one could also result in the engine running rich. If the fuel injectors are stuck open, that could also explain the excess fuel. Limp mode is a safety feature designed to protect the engine or transmission. It's often triggered by the engine control unit (ECU) detecting a significant problem, such as a sensor failure or a misfire. A scan for error codes would be beneficial to pinpoint the issue further. If you need more advice, have any other questions about your vehicle, or would like to get connected to a RepairPal Certified shop near you, we have you covered. Give us a call at 877-913-1554, and we will happily help you out!