2004 Nissan Titan

IMAGINE DRIVING DOWN A MOUNTAINOUS ROAD IN IDAHO STATE. YOU ARE GOING DOWN A HILL IN A PICK-UP TRUCK PULLING A CAMPER. ALL OF A SUDDEN YOUR VEHICLE GOES INTO LIMP MODE - IT WON'T REV OVER 1000 RPM. YOU LOOK TO PULL OVER BUT THERE IS ONLY A SMALL SHOULDER. VEHICLES ARE SKIDDING TRYING TO AVOID AN ACCIDENT AS YOUR VEHICLE IS DISABLED AND ONLY PARTIALLY OFF THE ROAD. AFTER FIXING THE PROBLEM, I REALIZED THE TRUCK SHOULD NEVER HAVE GONE INTO LIMP MODE. IT IS A CRITICAL DESIGN FLAW WITH THE VEHICLE. I WAS PUT IN HARMS WAY FOR NO REASON. ALL VEHICLES USE TO HAVE THE ENGINE SPEED CONTROLLED VIA MECHANICAL LINKAGE OR CABLES FOR THE GAS PEDAL. VERY FEW FAILURES EXISTED WITH THIS DESIGN. TODAY GAS PEDAL RUN BY A WIRE THAT SENDS AN ELECTRONIC SIGNAL TO THE VEHICLES COMPUTER. THE COMPUTER IN TURN EVALUATES THE GAS PEDAL POSITION WHICH THEN SENDS A SIGNAL TO THE FUEL INJECTORS AND THROTTLE BODY TO CONTROL THE ENGINE. THE CRITICAL DESIGN FLAW COMES INTO PLAY WHEN VEHICLE DESIGNERS COMBINE OTHER ELECTRONIC SENSORS ON THE SAME CIRCUIT AS THE GAS PEDAL. NON-CRITICAL COMPONENTS LIKE GAS EVAPORATOR SENSORS, POWER STEERING SENSORS, AIR CONDITIONER SENSORS. WHEN ANY OF THESE NON-CRITICAL ITEMS EXPERIENCE AN ELECTRICAL SHORT, THE VEHICLE GOES INTO LIMP MODE POTENTIALLY PUTTING DRIVERS IN HARM'S WAY DOES THIS RECOMMENDED SOLUTION FIX ALL PROBLEMS RELATED TO THE GAS PEDAL? NO IT DOES NOT. IT IS A LOT SAFER. I BELIEVE NHTSA SHOULD EVALUATE & ASSESS THIS CRITICAL DESIGN FLAW. I HAVE BEEN A CONTROLS ENGINEER FOR 28 YRS AND THIS DESIGN IS NOT SAFE. PLEASE REFER THEIR MODEL A60 SERIES MANUAL. NOV 2003 EDITION, REV-APRIL 2004, PUB NO. SM4E-1A60U1. SECTION B , PAGES EC-423 THRU 427. I WOULD FIND IT SATISFACTORY IF NISSAN REDESIGNED AND FIXED ALL VEHICLES BY SEPARATING CIRCUITS WITH CRITICAL ENGINE COMPONENTS FROM NON-CRITICAL COMPONENTS. *TR

THE VEHICLE DISPLAYED INTERMITTENT CHEMICAL TYPE ODOR THROUGH HVAC SYSTEM, 3 DEALERSHIPS UNABLE/UNWILLING TO CONFIRM, OR SEEK DIRECTION FROM CORPORATE AS TO METHOD FOR RESOLUTION AT MY SUGGESTION/REQUEST. I WAITED ONE YEAR TO ALLOW FOR VEHICLE TO "OFF-GAS" INTERIOR ODORS FROM MATERIALS USED IN MANUFACTURE, HAD TO INSIST THAT DEALER STAFF DOCUMENT THE CONCERN WHICH IS YET UNRESOLVED AND DENIED ASSISTANCE FROM CONSUMER AFFAIRS DEPARTMENT TO SATISFY HEALTH AND SAFETY CONCERNS. INCURRED SIGNIFICANT ADDITIONAL EXPENSES TO ALLEVIATE ISSUE SUCH AS IN CABIN AIR FILTER AND PURCHASE OF IONIZING UNIT; PLUS MISSED WORKDAYS, TRANSPORTATION, FUEL AND SERVICE AND DIAGNOSTIC FEES AT DEALERSHIPS. *TR

TL* THE CONTACT OWNS A 2004 NISSAN TITAN. THE CONTACT STATED THAT THE FUEL SENDING UNIT FAILED AND WAS CAUSING INACCURATE FUEL LEVEL READINGS. THE CONTACT STATED THAT THE FUEL LEVEL GAUGE WOULD DISPLAY THAT THERE WAS ONE QUARTER TANK OF FUEL WHEN THE FUEL TANK WAS ACTUALLY EMPTY. THE VEHICLE WAS TAKEN TO THE DEALER WHO ADVISED THE CONTACT THAT THE PROBLEM WAS THE SENDING UNIT AND THERE WERE NO RECALLS FOR THE FAILURE. THE MANUFACTURER WAS NOTIFIED AND CONFIRMED THAT THERE WERE NO RECALLS AND OFFERED NO OTHER ASSISTANCE. THE FAILURE MILEAGE WAS 88,000.

MY NAME IS [XXX], I HAVE A 2004 NISSAN TITAN I'VE HAD MY VEHICLE IN THE SHOP 5 TIMES FROM THE FUEL RAILS LEAKING WITHIN THE LAST 4 MTH. THIS DID NOT JUST START THE FUEL RAILS HAVE BEEN LEAKING OVER THE YEARS I JUST DID NOT KNOW WHAT THE SMELL WAS COMING FROM. ONCE THE PRESSURE BUILD UP IT STOPS LEAKING THAT WHY I COULD NEVER SEE THE FUEL LEAKING, UNTIL ONE MORNING I CRANKED UP WITH THE HOOD UP. THE THING IS THESE FUEL RAILS LEAKS THE FUEL ON THE ENGINE AND I KNOW NISSAN KNOWS THIS. INFORMATION REDACTED PURSUANT TO THE FREEDOM OF INFORMATION ACT (FOIA), 5 U.S.C. 552(B)(6). *TR

WHILE ATTEMPTING TO ACCELERATE, THE TACHOMETER HIT 3500 RPM AND THE ENGINE WENT FLAT. THERE WAS NO TYPE OF WARNING LIGHTS, IT WOULD REV UP TILL IT REACHED 3500 RPM AND THEN IT WOULD JUST CUT OUT LIKE IT HAD HIT THE REV LIMITER. I TOOK IT TO A NISSAN DEALER AND WAS TOLD THAT A LOW SPEED MISFIRE WAS THE ONLY CODE IN THE MEMORY AND THEY FELT THE PROBLEM WITH THE RPM WAS THE FUEL PUMP AS THEY HAD ALREADY REPLACED TWO 04 TITAN FUEL PUMPS. I CALLED BACK SEVERAL DAYS LATER AND WAS TOLD THE PROBLEM WAS NOT THE PUMP BUT THAT TWO OF THE CATALYTIC CONVERTERS WERE DAMAGED DUE TO THE MISFIRE. THEY HAD THE EXHAUST MANIFOLD UNHOOKED AND THE TRUCK RAN FINE. I HAD BOTH OF THE CONVERTERS REPLACED AND THE PROBLEM WAS STILL THERE. I TOOK IT TO ANOTHER NISSAN DEALER AND WAS TOLD THE FUEL PUMP WAS ONLY PUTTING OUT 34 PSI AT IDLE AND SHOULD BE 60. THEY ALSO SAID BECAUSE OF THE LOW FUEL PRESSURE THAT BOTH OF THE FRONT CONVERTERS WERE DAMAGED AND WERE NOW FAILING. THEY TOO STATED THEY HAD PROBLEMS WITH THE 04 FUEL PUMPS. I CONTACTED NISSAN (FILE NUMBER 6258543) AND ABOUT THIS AND RECEIVED NO HELP OTHER THAN BEING TOLD TO "HAVE A NICE DAY!' I HAVE SEARCHED THE INTERNET AND HAVE FOUND DOZEN OF INCIDENTS WHERE THIS HAS HAPPEN TO OTHER OWNERS AND THE PROBLEM SEEMS TO STEM FROM A FUEL PUMP PROBLEM ON THE 2004 TITAN. IN SOME CASES THE ENTIRE ENGINE HAD TO BE REPLACED WHEN THE CATALYTIC EXPLODED UPON THE RAW FUEL FROM THE MISFIRE REACHING THE CONVERTER. IT EXPLODED SENDING PIECES OF THE CONVERTER INTO THE ENGINE CYLINDER. NISSAN HAS NO TYPE OF SCREEN OR MESH IN THE CONVERTER TO CONTAIN ANY PIECES IN CASE OF A FAILURE. IF THIS HAD HAPPENED WHILE I WAS PASSING THE SEMI WITH ANOTHER VEHICLE COMING HEAD ON, THIS PROBLEM COULD HAVE RESULTED IN FATALITIES. THIS IS A PROBLEM THAT NISSAN NEEDS TO TAKE CARE OF BEFORE SOMEONE IS SERIOUSLY INJURED OR KILLED! *TR