Due to the faulty sensors its going to turn off (restart) constantly, unless you use a ridiculous dangerous temp or override the sensors. Of course you won't be able to monitor temperatures anymore if you do that, should the fans ever fail it will melt, probably... But i think you can leave the sensors alone and just use a ridiculous dangerous temp, so at least you can monitor the thing, more or less (ignoring the occasional 160°c spike) etc, giving you a chance to act manually, especially if you have a monitoring app.