If you are losing antifreeze, it is either leaking it or burning it, which may be the cause of the stalling. If headgasket, then the O2 sensors will have to be replaced and possibly the CAT.
Have a compression test performed to isolate the problem, if OK, then look for leaks. If compression is bad, then headgasket or possible intake gasket.
If headgasket then it will need to be changed and if a bolt is broken or threads in head are stripped, you will need a Timesert repair. Don't let them talk you into a heli-coil or anything else, Timesert is the only repair for a Northstar.
Sunday, December 28th, 2008 AT 8:26 AM