1992 Audi 100 problems

Filed Jan 18, 2008 · Acceleration, Brakes · 80,000 miles · CA

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 the federal safety agency 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 the federal safety agency 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.

Filed Jun 12, 2007 · 84,000 miles · CA

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!!!!

Filed Jun 12, 2007 · 84,320 miles · CA

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.

Filed Jan 6, 2006 · Fuel system · 89,000 miles · SC

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.

Filed Jan 5, 2006 · Fuel system · 89,000 miles · SC

Recently purchase a used 1992 audi 100 cs wagon. When I got it home and in the garage, there was a terrible gasoline odor. I noticed the puddle on the floor, and got under the car to check it out. Sure enough, there was gas leaking from the fuel lines in multiple places from the tank to the engine bay. All of the lines are severely rusted, to the point that it has sprung leaks. In checking audi online forums, it seems to be a common problem, with most people splicing in sections of hose to keep their cars running without having a persistent gas leak. I was suprised to see that the only fuel line recall on these units was 1993 and 1994 models. Luckily, I caught this thing before their was an ignition source to cause a fire. Currently, I am planning on using the ever popular tube splice until I decide if I will bend myself a new set of lines since replacements seem to be hard to come by.

Filed Aug 16, 2005 · Airbags · MI

Dt: there was a recall but this vehicle was not included in the recall due to VIN. Air bags did not deploy. However, air bag light was on. Dealer has not looked at vehicle. The light came on june 15, 2005, and it stayed on.

Filed May 23, 2005 · Airbags · VA

I?ve a 92 audi 100 cs quatro, VIN [xxx]. It appears that the federal safety agency recall id 97172000 would cover this car, as the VIN number is in the range of applicable vehicles. As I write this, the dealer is replacing this part, the airbag controller, because the diagnostics has indicated that it has failed. This appears to fit with this recall. However, when I talk to the dealer (checkered flag, virginia beach, va) and the audi service line they say that this recall does not apply to this vehicle. But they cannot tell me why. They plug it into the computer and it says it doesn't apply. Nobody can tell me if the recall was applied. And the range on the recall document says: [xxx] - [xxx] which certainly seems to fit by VIN number (see above) my compliant ? Either the recall is not being honored or the recall has already been applied and nobody in the audi can confirm that it has been applied. I've only had this vehicle for a year. So I can't confirm that it wasn't applied. However, your system, should keep track if a particular car has had the recall applied. The consequences are that I've got to pay $1300 for the part and $300 for installation. I would like audi to (a) show me the recall was applied or (b) refund me $1600 (or so) for the part and labor that you charged me. *js information redacted pursuant to the freedom of information act (foia), 5 u.s.c. 552(b)(6)

Filed Apr 21, 2004 · Tires · 92,000 miles · OH

Upon inspection of the tires by the consumer he noticed cracks around the edges of all four tires. Also, tread begun to separate from the tires. The tires were not worn out, and 80% tread remained them. Dealership was notified, but refused to provide assistance because the tires had over 5,000 miles.

Filed Sep 15, 2003 · Acceleration · 86,000 miles · MD

While driving, a sudden surge in speed caused I believe bythe automatic activation of the cruise control feature on my 1992 audi cs 100. I hit my brakes, shiftedmy automatic transmission to neutral and stomped the accelerator several times until the engine stopped racing. I checked to see if the cruise control was in the off position, it was. The same thing occured several more times before I had the cruise control disconnected, after which the car drove normally.

Filed May 20, 2003 · IL

The rear speaker had blown, which caused the entire system to fail, there was a recall regarding the issue # 01v324000, however the vehicle identification number was not included.