Cadillac Repair Questions? Ask a Mechanic for Answers ASAP
If the blade is open It is stuck. Check the throttle cable to make sure you have slack. If there is slack and the blade won't close try cleaning it to free the blade up. If there is no slack remove the cable from the blade to see if it closes farther. If it does your cable is bad. I still think your idle system is more likely though. Do you have a Iac tester or no?