Wally - before you disconnect, discard, etc. I suggest you search this forum for postings by others who have experienced your problem. I can remember at least three threads. Bottom line is that part #126 830 07 84 or similar is certainly available from dealer (I paid under $35) or cheaper from Phil at Fast Lane. That part attaches to the end of the stainless coil and acts like a thermostat admitting or blocking the flow of bypassed coolant.