Hi all dont crucify me if its already been asked but im having issues and im stumped as to why . 2007 xr6 turbo manual bf ive recently changed water pump , done new hoses ,changed temp sensor ,thermostat and changed and flushed cooolant 2 times now . And today I even went out of my way to let the car run with the filler bottle cap off and long story short the car runs considered normal temps when the cap is off (just above quarter) and every so often spikes up and does the usual thermo fans kick in cools it down then back to normal thermo fans shut off . But when the filler cap is then placed back on the filler bottle temps spike after maybe 2-3 mins thermo fans kick in and its an endless battle to run car colder and the thermo fans never turn off as its running "hot" never gets to half way but its not normal for this car . I have no clue as to why and how its doing it any advice/help greatly appreciated.
