I had a few mins before work so I took the air cleaner off and started the car. I could feel the ICU working. After starting the idle was a little high for about half a minute then slowly decreased until the car was running rough with the econ gauge almost in the red and fluctuating. Then the idle went up to 1500 as the gauge pegged solid to the black. I shut the car off and immediately start it and it idled perfect at about 650 and the vacuum gauge not quite pegged to the left. After a few minutes the idle climbed back up to 1500 and the vacuum gauge was again pegged to the black. All the while the microswitch on the engine was touching the linkage and the linkage never moved. Next I will get a meter and check the duty cycle.