Question about Buick Rainier

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I was driving at about 70 mph all of the sudden I could no longer accelerate. When I step on the gas pedal nothing happened. I had to coast over to the side and catch a tow. The car will start fine, idles fine goes into gear smooth But then nothing. Any ideas??

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These vehicles use a "drive by wire" system. That means there is no longer a cable to pull the throttle open.

if something goes wrong they automatically default to 0% throttle for hard faults.

You either had a sensor go bad, or the motor that opens the throttle.

Posted on Oct 23, 2013

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Question to Toyota Ed: How would you explain Toyotas with Sudden unintended acceleration in cars that have the Denso pedal in them? I have heard that Volkswagen Jettas are also using the Electronic...


Hello, Zman777.

According to the material provided by Toyota, the Denso pedal does not have the alleged acceleration issue.

Also, according to information that has been provided by Toyota, the alleged acceleration issues is being caused by two possibilities;

One is additional placement(s) of floor mats on top of the factory floor mat. The extra mats are not secured, and can move around the driver side footwell, and, in the worst case scenario, move on top of the accelerator pedal, and trap in into the 'applied' position. I myself have experienced this mat/entrapment issue during a road test.

The other possibility is that certain accelerator pedal mechanisms may mechanically stick in a partially depressed position or slowly return to the idle position. Over time, the internal mechanism in the accelerator pedal my become worn. As a result of this wear, combined with certain operating and enviromental conditions, friction in the mechanism may increase and intermittantly result in the accelerator pedal being hard to depress and/or slow to return or, in the worst case, stick in a partially open position, increasing the risk of a crash.

In short, according to what we have been provided, the issue is mechanical, not electrical. The modification that Toyota dealerships are performing rectify this issue, and, this modification has been approved by the NHTSA.

Nowhere has it been found that the vehicles with the alleged acceleration issue have 'accelerated' without warning, as in sitting still, and the car is suddenly going 100 mph. None.

What 'could' happen, if the pedal 'was' sticking, is, in my opinion, an 'Unexpected Non-Deceleration' condition.

If you were going 15 mph, and the alleged issue appeared, when you let off of the gas pedal, the car would continue at 15 mph, and NOT accelerate to 100 mph, as has been falsely mentioned in the media.

Regarding VW, sorry, I cannot comment on VW, or any of their systems, I am not a certified VW mechanic.

I hope that this info helps you out.

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