I'm now getting what i'd describe as a 'spinning rattle' from driver's side of the dash. it's very interminit and only seems to happen above 40 mph and will do it for a sec or 2 then not for a while-although it has gone longer on occasion. besides the heater stuff what is there mechinical under the dash. I'm thinking speedo cable but i do not know if it's mechinical or electronic. this is on a 98, 2.5L stock.
The speedo is electronic, so no noise. There is nothing mechanical on that side of the dash, just turn up the radio louder and stop "hearing" the noises you think are there. It's ajeep they make noise.