Home › Forums › Stay Dirty Lounge › Service and Repair Questions Answered Here › Car randomly stalling › Reply To: Car randomly stalling July 5, 2020 at 11:14 am #959409 Jeffrey VoightParticipant Crank sensors are cheap and easy. Just replace it. A leaking cooling system is lethal to the engine. It should be fixed properly. If the radiator leaks, it needs replaced. Radiator stop leaks are not proper repairs.