We have a 1995 Previa. In 2007 at about 93000 miles, it would accelerate on its own inside the city and on freeway. It was very scary. We used to call it the rogue vehicle with a mind of its own.

We took it to the dealer; the head engineer had to keep the vehicle overnight to see what it was doing. They said it was oxygen sensor - problem. This vehicle has 2 oxygen sensors, one about $350.00 and one about $600.00. He recommended first replacing the cheaper of the 2 and see what happened. We did, but still had the problem. Then we replaced the other one and that solved the problem. We have not had unintended acceleration for 3 yrs this month.

Though oxygen sensor is not a reason given by Toyota, we had the same end result of unintended acceleration in Previa, which is not even recalled so far.

I called the dealer last week and he said the problem they are discussing is different- we were not even on same page.

Then I called Toyota and informed them of the above problem we had.

I decided to post here as there could be other previa owners who had the same problem.