I have a '92 with a 2.5 in it. I noticed that it was running hot, just below the red line. Checked the rad and found it to be low on coolant, it took only about a pint to fill it. Still was running a bit high so I changed the thermostat and radiator cap. Temp was still reading hightbut the upper hose and radiator are staying cold. Heater hoses are hot a fit blows hot. So next step was a new water pump and it's still doing the same thing. Tried another new t-stat with no change. So I thought maybe the rad was plugged so in goes another rad. Now temp is still up but not as much, around 230. Now top hose and radiator top get warm but not the rest of the rad. Something has to be plugged but I just can't get a handle on it...anybody have any suggestion of where to go next? It's not losing coolant or having the deadly milky oil but it's not building a lot of pressure.