I got a call from a friend who runs a shop in town, to see if I can help him out with a customer’s MegaSquirted Myers Manx dune buggy. Really cool buggy – lots of attention to detail on it!
I took the ECU home and have run a bunch of tests and am now stumped. I’m fairly certain there is something wrong with the crank trigger circuitry or the chip itself. I have borrowed a MegaStim board to test the ECU (I have since ordered a JimStim for myself), and I can follow the rpm signal into the board, through the opto-isolator chip, and into the main chip of the ECU, but the ECU just isn’t seeing it. I can fake “trigger” the injectors, but the ECU isn’t recognizing a “running” engine.
I’m confident I can solve it, but I’ve been at it now for about 6 hours of research and testing. The customer is just better off ordering a new ECU. I, on the other hand, I am very stubborn.
I will not be dominated by an electronic circuit.