I’ve had some issues in the last couple of months with my tachometer not working correctly. Sometimes it will work, most of the time it is way over or under actual RPMs. I figured it was a bad stepper motor or soldering, and had been wanting to replace the cluster with one with trans temp gauge included. So, I ordered a refurbished one from a reputable company that rebuilds clusters to spec. Anyway, I received the new one and installed it. What do you know, the tach is still not working correctly. It seems to work okay for about two minutes at idle, but as soon as I drive it, the needle drops down to 0 and doesn’t move much. I pulled my fuse block under the hood to see if there was any cuts/cracks in the wires, and I didn’t see anything. I’ve searched the internet for several days looking for anything about this issue, but most of them attribute tachometer issues to the cluster stepper motors, bad car alarm installs, or faulty/tired soldering on cluster circuit board. I’m the second owner (my mother was the first), and I’ve not had any alarm, remote start, or anything else tapping into factory wiring. The car is basically in mint condition. Any suggestions would be very much appreciated! Thanks!