hey need help with this one. my 2001 se has a check engine light come on with a p1404 code. my care runs about 180degrees in the winter instead of 200 or 205. so i changed coolant temp sensor flushed and still nothing . only time it goes off is if i take out relays and plug back in. it fixes for about 40 miles or so but then check engine comes back on and fans run continuously again. someone please help , thermistat you think?