1999 VOLVO X70 Engine And Engine Cooling Problems

I HAVE JUST REPLACED THE ETS ON MY 1999 VOLVO XC. OVER THE LAST 15 MONTHS, OUR VOLVO HAS UNDERGONE A COMPLETE COLLAPSE. IT STARTED WITH A BLOWN HEAD, DESPITE HAVING THE CAR SERVICED REGULARLY. MY REPAIRMAN SAID THE CAR HAD EXPERIENCED A HEAT PROBLEM BEFORE WE PURCHASED IT, IN HIS OPINION. SINCE THAT TIME, WE HAVE HAD TO REPLACE THE ABS AND ETS MODULES. THE CAR IS STILL NOT RUNNING. DESPITE REPLACING THE ETS, THE VOLVO DEALER CLAIMS THEY CANNOT GUARANTEE THE UNIT. WHILE WE DRIVE, THE ENGINE JUST STOPS. SEVERAL TIMES THIS HAS HAPPENED IN TRAFFIC AND WE HAVE BEEN FORTUNATE TO MAKE IT TO THE BERM. THIS HAS CONTINUED TO HAPPEN. WE HAVE USED A MECHANIC OTHER THAN VOLVO BECAUSE THE DEALER HAS BEEN SO NON-RESPONSIVE. AT THIS MOMENT MY REPAIRMAN IS AWARE OF 8 CARS IN CHATTANOOGA EXPERIENCING THE SAME PROBLEMS. *JB