I'm still getting the ect sensor error code. This time I know the sensor is good, because I tested it and with the engine cold it has resistance 1.9kohms (book says 2, so I think thats good), and as the engine temp goes up the resistance goes down. Now I need to test the plug for voltage. Can someone tell me how to do this? I have a pocket digital multi meter and it has different settings for voltae. I don't know how to set it up properly, any help appreaciated. Thanx