Quote:
Originally Posted by the_3d_man
Dealerships are always so quick to say that the ECU must be defective. I've NEVER seen a car with a bad ECU. They don't just fail but I know so many people who in the process of trying to diagnose a problem have had the dealership replace the ECU. It's just the answer that dumb service techs like to give.
|
ECUs can and do fail, especially if they are exposed to the heat and NVH of the engine bay. Sometimes it's a design fault, like the 90's Jeep Grand Cherokee ECU. These cars also had really bad main harnesses. A harness in good shape goes for $400+. Ask me how I know.
The JGC had all of the above going for it.