[ht325i]

I believe it's probably offset bostogrun, but was wondering if there would be anything i could do myself to fix this or do I have to just get a whole new cluster. I read about the batteries wearing out but if it were the cluster batteries would it be so consistent everytime? And also I just noticed that one of my fans is not turning on (not the water pump pulley operated but the one between the front grill and radiator)....would this have an affect on the high temp, and at what temp should this fan switch on if it were working?? Thanks...