I have been having this issue for a while now, the RPM goes dead and then back again, it will stay dead for a long time, then randomly will come back and work for a day or 2 and then die again. I was told to change the cluster and I did, but the issue still the same. I have read that a ground cable could cause it, and I have check all the ground cables that I could find and still no luck. I have also check the distributor, all the cables are good. is there an specific place that I could check? its not a big deal because the car still running but it will be nice to have that gauge working