2000 NISSAN MAXIMA Engine And Engine Coolingexhaust System Problems

AFTER DRIVING AT HIGHWAY SPEEDS FOR 20 MINUTES, GOT OFF HIGHWAY AND PULLED INTO GAS STATION. AFTER PUTTING THE VEHICLE IN PARK, THE CAR SHUT OFF. AFTER COMING OUT OF THE STORE, IT FAILED TO START. WENT BACK TO THE CAR LATER, AND IT STARTED RIGHT UP. TOOK TO MECHANIC, BLAMED THE SERVICE LIGHT ON THE ANTI-THEFT SYSTEM. CAME ON AGAIN 2-3 WEEKS LATER, TOOK TO A DIFFERENT MECHANIC WHO SAID IT WAS THE IGNITION COILS. QUOTED ME $1300 TO REPLACE ALL 6. OPTED NOT TO PERFORM REPAIR AT THAT TIME. 2 WEEKS LATER, THE COIL FAILED AND CAUSED THE CAR TO RUN VERY ROUGH, AS WELL AS CONSUME LARGE AMOUNTS OF GAS. REPLACED BROKEN COIL AND O2 SENSOR. CAR CONTINUES TO GET FAR BELOW AVERAGE MPG. ABOUT 15 MPG HIGHWAY DRIVING. *TR

TRANSMISSION FAILURE: BOUGHT VEHICLE IN APRIL OF '99. TRANSMISSION BEGAN TO SLIP AT 15K. REMAN TRANS UNDER WARRANTY. 2ND SLIP OCCURRED AT 30K UNDER WARRANTY. DENIED VEHICLE TRADE. REMAN TRANS. 3RD OCCURRENCE AT 45K, REPLACED TRANS W/ OEM UNDER WARRANTY. DENIED TRADE. TRANSMISSION FAILURE AT HIGH TEMP FOR LONG DRIVES (2 HR INCLINE) AND HAD TO WAIT FOR THE TRANS TO COOL BEFORE IT DROVE AGAIN, ONE OCCURRENCE AT 55K, OIL OK. STILL INTERMITTENT POWER LOSS/SLIPPAGE. DEALERSHIP UNABLE TO RECREATE PROBLEM. DENIED TRADE. IGNITION COILS: KNOCKING, BAD GAS MILEAGE, AND POWER LOSS DUE TO IGNITION COIL FAILURE AT 70K. WAS TOLD I NEEDED TO REPLACE ALL COILS RATHER THAN THE ONE THAT WAS DAMAGED AND ALL SPARK PLUGS. ALTERNATOR WENT OUT AFTER REPAIR. REPLACED ALL COILS, PLUGS AND ALTERNATOR ($1500). STILL HAVE POWER LOSS & OCCASIONAL KNOCKING. NO HELP FROM NISSAN. DENIED TRADE. SUSPENSION: CONSTANT KNOCKING OF TIRE AREA AT...

ENGINE COILS AND OXYGEN SENSORS HAVE BEEN NEEDED TO BE BE REPLACED ON MANY OCCASIONS SINCE I'VE OWNED THIS VEHICLE. WHEN 2 OF THE COILS NEEDED TO BE REPLACED, THE ENGINE RAN EXTREMELY ROUGH (FROM BOTH MISFIRES) CAUSING A HUGE REDUCTION IN ENGINE SPEED AND THE INABILITY TO PASS OR ACCELERATE SAFELY ONTO THE HIGHWAY. THIS HAPPENED SO ABRUPTLY ON ONE OCCASION, THAT I WAS NEARLY RUN OFF THE ROAD. I AM THE ORIGINAL OWNER (PURCHASED AUG 1999) AND HAVE HAD TO REPLACE 4 OF THE 6 ENGINE COILS AND ALL 4 OF MY OXYGEN SENSORS (EACH ON DIFFERENT DATES). I ONLY HAVE 116K MILES ON THE VEHICLE. *TR

DT*: THE CONTACT STATED THE CHECK ENGINE LIGHT ILLUMINATED. THE ENGINE SPUTTERED WHEN STARTED AND AT 20-55 MPH THE ENGINE MADE A RATTLING SOUND. AT SPEEDS GREATER THAN 55 MPH, THE RATTLING STOPPED. THERE WERE THREE OXYGEN SENSORS REPLACED IN THE EXHAUST SYSTEM OF THE VEHICLE HOWEVER THE PERSISTED.