Hi I have a 4.3L vortec engine in a 97 gmc Sonoma. The engine temp gets to nearly 100 degrees celsius when the engine initially heats up before the cooling system kicks in. This just recently starte happening, it used to kick in at around 70 to 80 always then keep the temp there. After kicking in at 100 it still brings it back down to 70 and keeps it there but what could the reason be for it kicking in later now? And only when it first heats up?
Sunday, September 30th, 2012 AT 11:36 PM