AUTOMOBILE 1998 MERCURY SABLE ENGINE RPM SURGES FIXED SEVERAL TIMES AT DEALER REPLACING SENSORS AND OTHER PARTS STILL SURGES PERIODICALLY IN 2002 THE ENGINE SURGED AND THE BRAKES DID NOT HOLD COLLISION WITH ANOTHER VEHICLE THE CAR WAS IN THE SHOP 5 TIMES BEFORE THE CRASH FOR THE SAME PROBLEM SINCE 2002 ANOTHER 4 TIMES AND THE PROBLEM IS STILL NOT FIXED ALSO AFTER SHUTTING OFF CAR, THE FAN STILL RUNS ALSO FIXED 4 TIMES NOW ONLY REASON WE DID NOT BUY A NEW, AND OTHER BRAND VEHICLE IS LACK OF FUNDS TO PURCHASE A NEW CAR THIS CAR IS DANGEROUS NOT SURE OF ACCIDENT DATE EXACTLY WILL CHECK POLICE REPORT . *NLM