Discussion Starter · #1 ·
About a week ago I started hitting 220-230 degrees and I started the 69 chevelle (350) up and warmed it up...240 and i am sure it will keep climbing. What is the most common thing to lead to this other than rad fluid? Therm. gauge not calibrated? water pump? I appreciate any helpful comments. Also, I used to idle at 900ish and now it is barely at 500 and i am lucky if it doesnt shut off the engine.