I have a 1987 k5 Blazer with a 5.7 TBI. It has about roughly 100000 miles is auotmatic and does has 4 wheel drive. The problem I am having is my Gauge always reads 210 even when I first start the truck in the morning then after about 10 minutes goes in the red to 260. I have checked the resivior when this happens the water is not boiling, the radiator is not hot to the touch and both the radiator hoses feel the same temp. I have drove it like this for a half an hour with no problems. I have replaced both senors the one by the water neck as well as the one on the head. I have also repaced my thremostat with a 160 one as well as flushed and filled the cooling system. my questions is, is my gauge telling truth if so what is wrong and how can i fix it.
Jul 10, 2007 at 12:38 AM