Yea im thinking the radiator. I pulled the upper and lower hoses off and ran clean water thru, top to bottom, flow seemed a little restricted. So i put it back together filled it with prestone premix (does it really need the dexcool stuff if there is a complete flush? If so do i have to get that from the dealer?), bled the air using the bleed bolt on the upper hose to block connection. Then we took a 2hr trip...
It really seems to be a cooling capacity issue, took that trip with it over the holiday weekend, 1500ft climb with a full bed and tuggin a trailer, was fine until we heat the peak, temp slowly climbed going up the pass and then i pulled over mid way between the midpoint and "H", just left it running, started coming back down, steadied at the normal spot, put her back in drive and hot back on the highway, we crested the pass and it was fine the rest of the trip (30 min down about about an hour through stop and go small town(s) traffic. Coming home i was a cpl hundred pounds lighter, it climbed a little as i was cresting the pass, quickly retuned to normal once i was going down the hill, fine the rest of the way home.
So... agree i need the radiator rodded? Replaced? Do they make aftermarket radiators with more capacity?
Last edited by pdxjerryb; 05-27-2009 at 11:03 PM.