Hi I have a 92 thunderbird sc with 57 thousand miles. Water pump was recently changed. Spark plugs have been done, thermostat has been done after water pump was changed car seems to be leaking or burning coolant I’m not sure which. Runs good when driving but has rough idle occasionally and needed coolant to be refilled. Engine starts to overheat I’m guessing I should do a pressure test. We think it might be bad radiator. Any advice or thoughts on what it could be.