Northstar Engines and System Technical Discussion Discussion, 2000 DHS - cooling system problems in Cadillac Engine Discussion; My cooling system won't release pressure off system and hoses get really big like ready to explode... When I drive ...
My cooling system won't release pressure off system and hoses get really big like ready to explode... When I drive it the next day I have to add water to system before i leave cause the pressure pushed all fluid out... Why
Just make sure which ever one you end up with has jiggle or little ball bearing (BB) check valve on it so that you never have any problems purging air pockets from the system. Most aftermarket low cost thermostats don't have them. I recommend you get an AC Delco part# ACD 131-128 from a dealer or an AC Delco parts house.
I have a crack in my water crossover and shop told me they can't run a pressure test until it get fixed... But once they fixed that they will run the test and find out if the heads are bad and I would waste $400