I've got and older tenant sweeper that starts and runs great for about twenty min then I just shuts off check engine light comes on. Then it will start right up and run for 45 seconds and do the same thing. The spectrum 1 reg is new 3 times replaced due to freezing up got that problem resolved but the new problem still continues if you let the truck cool off you can start and run it about ten min before shut down occurs again has anyone had this issue before I'm thinking ecu is my problem not 100 sure thanks for anyone that can help oh cannot find any burnt or chaffed wires