HAD TAKEN MY S80 TO THE VOLVO DEALERSHIP A NUMBER OF TIMES COMPLAINING OF ENGINE HESITATION AND STALLING. VOLVO"S DIAGNOSTIC COMPUTER SYSTEM "VADIS" OUTPUT CODES CLEARLY SHOWED DEFAULT CODES INDICATING A FAULTY MODULE. THE SERVICE MANAGER AT THIS STEADFASTLY REFUSED TO REPLACE THE MODULE "DUE TO COST". I WARNED HIM OF THE POTENTIAL CONSEQUENCES OF TRYING TO OPERATE THIS VEHICLE WITH UNRELIABLE ENGINE FIRING AND THE ASSOCIATED "STALLING" THAT OCCURS WITHOUT WARNING. I EXPRESSED MY CONCERNS TO HIM ABOUT THE DANGER THAT THIS PROBLEM PRESENTED FOR ME AND OTHER VEHICLES WHICH I HAD EXPERIENCED DURING PREVIOUS "STALLINGS". UNFORTUNATELY, AFTER TREMENDOUS RESEARCH AND A NUMBER OF PHONE CALLS BEFORE I COULD BRING THIS INFO TO BEAR TO FORCE THE DEALERSHIP TO HONOR THEIR WARRANTY I EXPERIENCED A "STALLING" EVENT WHILE DRIVING ON THE EXPRESSWAY WHICH LEAD TO A SINGLE CAR ACCIDENT,RESULTING IN A TOTAL LOSS OF MY CAR. *NM