Northstar Engines and System Technical Discussion Discussion, Another overheating northstar.... in Cadillac Engine Technical Discussion; First i wanna say sorry i didnt search alot but from what i did i really didnt find what i ...
First i wanna say sorry i didnt search alot but from what i did i really didnt find what i was looking for. I know they have head gasket issues and im hopin this isnt the case. It overheats roughly 30 mins after startup. Ive replaced both intake gaskets, thermostat, radiator, and the entire system has been flushed. The car runs perfect tho. Any ideas? Its a 98 sts
Definitely check that purge line first. In fact, a guy just the other day in another section of the forum found that his purge line was plugged which was causing his car's overheating. Do the block test after an overheating event for confirmation, but if you have already gone through the system, there isn't much left other than head gaskets.
If that is what it is there is plenty of reading to do here. A few guys (including me) are in the middle of doing the job... (But we are all going much deeper than just head gaskets.)