List Of Check Engine Light Rpm Not Working Ideas. Sounds like engine performance is challenged likely due to a fuel, spark or air intake concern. From time to time the gauge will work but only for a few hours and the check engine light remains on.

Replace catalytic converter (s) with new original equipment catalytic converter (s), $1,383. Over time the wiring for your rpm gauge may become faulty. Sensor problems, like a faulty vehicle speed sensor or engine control module.