Anyone else's refrigerator make loud popping noises every so often?

It can be sound of refrigerant gas/oil. This can happen if you try to move the refrigerator. You can try one thing, power off your refrigerator completely for 4 hours. This will settle down the gas/oil and probably it will start without sounds or with less sounds. Remember to consume the food before as it may get spoilt. Better to gave the gate open to completely bring the gas in tubes to normal for two hours.