Ice in Radiator

It will restrict coolant flow and impede cooling in motor, it may also prevent engine coolant sensor from doing its job. If you have the time, run the engine in the driveway/garage and let it get up to temp, it should start melting the ice in the radiator, keep a close eye on temp gauge and shut motor off after a few minutes, especially if you start getting that "overheating" smell. (If you have a heat gun you can speed the thawing process). I've seen ice in a radiator persist much longer than you may believe possible, but restricted flow and moving at 30+MPH in cold weather can keep a radiator frozen for a long time. After you do get radiator thawed, give it a flush with proper cold-weather coolant. You should replace coolant every couple years anyhow as its rust inhibitors break down over time.

PS to add, don't drive it on road, you can cause engine to overheat with a restricted radiator, and you won't be able to shut motor off soon enough if it does.

If you have ice in the radiator wouldn't you'd think you'd have ice in the engine block?????