I have owned my 2002 since March and I have been working out the issues ever since. One particular problem is the tach. It doesnt like to work in the cold and only the cold. In the summer, it always worked, but if its cold out, like now, it doesnt work. Sometimes, after about ten minutes of driving, it might kick on. Also, if i hit the top of the instrument cluster wih my hand while running, the needle will jump up and fall back to zero. I have been going through the wiring and found a bad connection which I repaired yesterday. But this morning, the tach only seemed to be working at 50%. If I was at (based on engine sound) around 3000 rpm, the tach would only register 1500 rpm. At idle, it says 0 rpm. Any Ideas?