Duane Beach-Barrow
New Member
My 2001 Honda Civic EX Coupe with 168,000 miles, has me baffled! I usually run 100% Antifreeze in the engine because I live in the desert. Car ran hot on the freeway, I refilled it with Antifreeze, and it kept running hot, even on short trips & not going over 40 mph. I turned the heater on, sometimes it blows hot, but sometimes blows cold. If I turn on the AC so the fans behind the radiator come on, that helps a little. But it will still run hot on a trip more than 5 miles and going under 40 MPH. I have replaced the Thermostat, Thermostat Housing and the Sensor that goes into the Thermostat, an adjacent sensor in the top of the engine next to the valve life cover. I also replaced the two relays and 4 fuses that control this part of the car and the gas cap. I took it to both AutoZone and O'Reilly and they put it on their computer. I got a P1457 Error Code {EVAP System Leak Detected (Canister Area)}, and a P1361 Error Code (TDC Sensor 1 Noise). All of the hoses are intact, I flushed the Radiator when I replaced the Thermostat. Before I spend $200 for parts and labor, is this the real cause of my car overheating?