Hello I have a problem with my tacho.. I have a Golf 3 with audi TT tacho.. He has at the beginning ( 2 years ago) normal funkzerniert. but a year ago he started to make problems. If, for example, outside is cold then he goes the first 4 min even nix, then when the car got warmer then slowly find him to people. but so it shines and again runs out about 4 min long. the whole ads have moved back and forth after 8 min. overall the tacho goes then only n ormal, but my water temperature indicator has shifted by 30 degrees, that is when I turn on my car then the indicator is already at 70 degrees.. if the car is normally warm it has already arrived at 130 degrees.. and that becomes worse and worse.. now the tacho needs already 12 minutes. to run then normal.. Is the tacho broken or is there something else???? MFG A.Width