Like everyone else I have had nothing but problems with my 2001 Lincoln ls. This is the worst car I have ever owned, but my wife loves it! I have replaced all the coil packs, valve cover gaskets, heater control valve, hoses ect. Now I have another code the famous p0174 and sometimes hot air will blow out the vents with the a/c on. I have saved a lot of money doing the work myself so I am also fed Lu with this car but willing to give it another try for my lady. Please help! Thanks