1992 AUDI 100 — Problems, Recalls & Safety Data

92 AUDI 100S, STUCK THROTTLE AND BRAKE BOOST FAILURE, PREVIOUSLY REPORTED. FOUND THE PROBLEM AND AM POSTING IT HERE. THIS CAN KILL SOMEONE. I HOPE NHTSA DOES SOMETHING. AUDI USA WILL NOT. SEE BELOW: FOUND THE PROBLEM. MANGLED PLASTIC DEBRIS IN THE THROTTLE BODY THAT WOULD HANG UP THE PLATE INTERMITTENTLY. SHAME ON ME FOR CALLING IT ACCELERATION WHEN IT WAS ACTUALLY A STUCK THROTTLE. WHAT I LEARNED IS THAT THE SMALL BRIEF THROTTLE STABS YOU DO TO KEEP GOING UPHILL OR IN TRAFFIC CAN RESULT IN VERY HIGH RPMS IF THE THROTTLE STICKS AT MAX EXCURSION. IT MAKES YOU THINK THE ENGINE IS ACCELERATING. SHAME ON AUDI FOR NEVER EXAMINING THE THROTTLE BODY AND IGNORING THE PROBLEM POSED BY THE DISINTEGRATING PLASTIC NECK ON THE VALVE I MENTIONED IN EARLIER POSTS. THE DISINTEGRATION OF THAT THIN PLASTIC NECK APPARENTLY CAN RESULT IN SIMULTANEOUS STUCK THROTTLE (FROM DEBRIS GETTING SUCKED INTO THROTTLE BODY AND PREVENTING THE THROTTLE PLATE FROM RETURNING TO IDLE POSITION) AND LOSS OF BRAKE BOOST THROUGH THE VACUUM LEAK CAUSED BY THE BROKEN NECK. BTW, THE BRAKES WOULD NOT STOP THE CAR ON THE LAST RUNAWAY (ABOUT 5500 RPM), JUST GOT IT DOWN TO ABOUT 20 MPH EVEN WHEN I WAS STANDING ON THEM, HAD TO SHIFT INTO NEUTRAL (WHICH TOOK THE RPMS TO REDLINE AND LIMITER) AND TURN OFF THE KEY. THAT REALLY SURPRISED ME. THIS PROBLEM COULD EASILY KILL SOMEONE. I HAVE NOTIFIED AUDI USA AND NHTSA BUT NOBODY HAS TAKEN ANY ACTION. I DON'T KNOW WHAT MORE I CAN DO TO PREVENT A TRAGEDY. REMEMBER, TWO OTHERS HAVE REPORTED RUNAWAY/ STUCK THROTTLES ON 92 100S. HOPEFULLY THE DEBRIS WOULD EVENTUALLY GET SUCKED OUT OF THE THROTTLE BODY AND CHEWED UP IN THE ENGINE, BUT MINE DIDN'T. IT HAD TO BE FOUND AND DISLODGED MANUALLY. WHILE IT REMAINS IN THE THROTTLE BODY, IT IS A DISASTER WAITING TO HAPPEN. *TR

92 AUDI 100S, STUCK THROTTLE AND BRAKE BOOST FAILURE, PREVIOUSLY REPORTED. FOUND THE PROBLEM AND AM POSTING IT HERE. THIS CAN KILL SOMEONE. I HOPE NHTSA DOES SOMETHING. AUDI USA WILL NOT. SEE BELOW: FOUND THE PROBLEM. MANGLED PLASTIC DEBRIS IN THE THROTTLE BODY THAT WOULD HANG UP THE PLATE INTERMITTENTLY. SHAME ON ME FOR CALLING IT ACCELERATION WHEN IT WAS ACTUALLY A STUCK THROTTLE. WHAT I LEARNED IS THAT THE SMALL BRIEF THROTTLE STABS YOU DO TO KEEP GOING UPHILL OR IN TRAFFIC CAN RESULT IN VERY HIGH RPMS IF THE THROTTLE STICKS AT MAX EXCURSION. IT MAKES YOU THINK THE ENGINE IS ACCELERATING. SHAME ON AUDI FOR NEVER EXAMINING THE THROTTLE BODY AND IGNORING THE PROBLEM POSED BY THE DISINTEGRATING PLASTIC NECK ON THE VALVE I MENTIONED IN EARLIER POSTS. THE DISINTEGRATION OF THAT THIN PLASTIC NECK APPARENTLY CAN RESULT IN SIMULTANEOUS STUCK THROTTLE (FROM DEBRIS GETTING SUCKED INTO THROTTLE BODY AND PREVENTING THE THROTTLE PLATE FROM RETURNING TO IDLE POSITION) AND LOSS OF BRAKE BOOST THROUGH THE VACUUM LEAK CAUSED BY THE BROKEN NECK. BTW, THE BRAKES WOULD NOT STOP THE CAR ON THE LAST RUNAWAY (ABOUT 5500 RPM), JUST GOT IT DOWN TO ABOUT 20 MPH EVEN WHEN I WAS STANDING ON THEM, HAD TO SHIFT INTO NEUTRAL (WHICH TOOK THE RPMS TO REDLINE AND LIMITER) AND TURN OFF THE KEY. THAT REALLY SURPRISED ME. THIS PROBLEM COULD EASILY KILL SOMEONE. I HAVE NOTIFIED AUDI USA AND NHTSA BUT NOBODY HAS TAKEN ANY ACTION. I DON'T KNOW WHAT MORE I CAN DO TO PREVENT A TRAGEDY. REMEMBER, TWO OTHERS HAVE REPORTED RUNAWAY/ STUCK THROTTLES ON 92 100S. HOPEFULLY THE DEBRIS WOULD EVENTUALLY GET SUCKED OUT OF THE THROTTLE BODY AND CHEWED UP IN THE ENGINE, BUT MINE DIDN'T. IT HAD TO BE FOUND AND DISLODGED MANUALLY. WHILE IT REMAINS IN THE THROTTLE BODY, IT IS A DISASTER WAITING TO HAPPEN. *TR

RUNAWAY THROTTLE. UNCOMMANDED ENGAGEMENT OF CRUISE CONTROL? WOULD NOT RESPOND TO BRAKE OR SHUTTING CRUISE CONTROL OFF ON STEERING COLUMN STALK SWITCH. VERY DANGEROUS!!! ALMOST CAUSED A CRASH, VERY INEFFECTIVE BRAKING WITH ENGINE TRYING TO KEEP CAR GOING AT ABOUT 55 MPH, BUT I MANAGED TO PULL OVER AND SHUT CAR OFF. I PULLED THE CRUISE CONTROL FUSE AND PROBLEM HAS NOT REAPPEARED. I AM AN ELECTRICAL ENGINEER.

DANGEROUS UNCOMMANDED ACCELERATION. I SUBMITTED A COMPLAINT EARLIER TODAY THAT SAID I THOUGHT IT WAS A CRUISE CONTROL PROBLEM BUT IT ISNT. IT HAPPENED AGAIN TODAY WITH THE CC FUSE PULLED!!! IT WAS PRECEDED BY A FUNNY FEELING IN THE BRAKES, LIKE NOT ENOUGH VACUUM BOOST, THEN RADICAL ENGINE ACCELERATION EVEN WITH MY FOOT OFF THE GAS PEDAL. I PUT THE CAR IN NEUTRAL, THE TACH REDLINED AND THEN I SHUT OFF THE IGNITION. STARTED IT AND IT DID IT AGAIN. I AM AN ENGINEER AND NEVER BELIEVED THE STORIES ABOUT AUDIS AND UNINTENDED ACCELERATION... BUT NOW I KNOW IT CAN HAPPEN AND IT IS SUPER DANGEROUS!!!!

THIS IS A FOLLOW-UP TO COMPLAINT 10146994 FILED ON 1-05-06. IT CONCERNS THE RUSTED OUT FUEL LINES ON MY 100CS WAGON FROM AUDI. I HAVE STARTED TO TEAR DOWN TO REPLACE THE LINES, AND SEE WHERE THE MAIN ISSUE SEEMS TO BE. AT ALL OF THE MOUNTING POINTS FOR THE FUEL LINES ON THE UNDERBODY FROM THE FUEL TANK TO THE ENGINE COMPARTMENT, THE LINES HAVE RUSTED THROUGH. THERE WERE ACTUALLY 8 LEAKS INSTEAD OF THE THREE THAT I ORIGINALLY THOUGHT WERE PRESENT. DUE TO THE RUBBER MOUNTS BEING COMPRESSED AROUND THE LINES, NOT ALL OF THEM SHOWED THE LEAKS UNTIL THE MOUNTING BRACKETS WERE REMOVED. IT APPEARS THAT THE RUBBER MOUNTS THAT ARE USED HOLD WATER ETC. ALLOWING THE FUEL LINES TO BE PRONE TO RUST THROUGH IN THESE AREAS. IN CHECKING ONLINE FORUMS, IT SEEMS TO HAVE BEEN A PROBLEM WITH PREVIOUS MODEL YEARS AS WELL. I HAVE FOUND NUMEROUS REPORTS OF PEOPLE REPLACING RUSTED FUEL LINES ON AUDI MODELS. I HAVE NOT MADE A BIG ISSUE OF IT WITH AUDI AS OF YET, ONLY CONTACTED THEM TO THE POINT THAT THEY SAID THEY WOULD NOT REPLACE AS A RECALL. I AM SURPRISED THAT THERE WAS NO PREVIOUS ACTION ON THIS AS IT CREATES A FUEL LEAK THAT CAN BE A SOURCE OF FIRE. MY GUESS IS THAT IF THESE LEAKS WERE IN THE ENGINE COMPARTMENT WHERE AN EASIER IGNITION SOURCE COULD BE FOUND, THIS WOULD HAVE BEEN A BIG FIRE ISSUE AND RECALLED. *NM