just got back. The truck will not warmup unless you are on the highway, and even then it fights to get to temp. I let it warm up for 5 mins or so and did some stop and go driving for 20 minutes or so and it never warmed up, I had to keep the heat off or it would immediately drop right back down. The upper radiator hose does have pressure. I dont know how much but the hose has a fair amount of pressure in it when its warm, none when cold. Also as soon as you stop and the heater is on the temp goes down very quickly,at a stoplight the guage will go down. It used to take awhile for the guage to go down. Hope this helps
Last edited by scheidt27 : 03-23-2008 at 09:18 PM.