I have checked the relay on the driver side and proved it to be good. With an ohm meter hooked to the disconnected frequency valve connector located near the fuel distributor I get a constant reading of 13.2 volts, which is not indicative of any sort of fluctuating voltage which would indicate some sort of varying control. Un-plugging the Lambda causes the engine to run differently but not better. Also there is no noise or vibration at all from the frequency valve to indicate any activity. This is what leads me to think the Lambda ECU is defective. Am I close?