Faulty Needles
 

I need some advice, Im thinking about sending my needles to lextech to repair all four of my burned needles but I have two problems. One my tachometer works sometimes, only when its really hot outside and two my speedometer works but when it does work, my needles shakes until about 80MPH. Is it my needles that just need to be changed or is it much more serious like my speed sensor. BTW my fuel guage and coolant guage works fine.

Inside the cluster is a spring loaded module that controls the needle position on both the tach and the speedometer. The module is very sensitive and functions on a counter weight system with the needle. If anything goes even slightly out of alignment with these little spring modules... the needle will do a number of things including the symptoms you have described. Unfortunately, because the spring loaded modules are so sensitive it is very rare that one is able to repair it once it has gotten out of alignment. If it is a simple issue with the counterweight on the needle itself, lextech can fix it no problem... if it is the spring though... you will most likely need to get a new cluster :(

This morning I took out my instrument cluster and looked at the needles and I saw that the counterweight plastic part on both the tachometer and speedometer needles are both cracked so now I know what the problem is