Question about 1996 Toyota Previa

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We made the terrible mistake in buying a Toyota Previa long distance. We love them and this is our third, but this one, a 1996 Alltrac, arrived with a seemingly unsolvable problem. This car has no power. It is loud. (the muffler is good). The car gets no more than 10 mpg .The computer says the problem is the knock sensor. Of the seven mechanics who have seen it, half say it's not the knock sensor and the engine is fine. Those that think it's the knock sensor believe we should just get a new engine as it would cost nearly the same to access the knock sensor as to replace the engine. We have had the fuel injectors replaced and all wires and plugs. It seems to run better when cold. We have already put $7000 into it and are no closer to a solution.If we do have to replace the engine we would expect to pay at least another $3000 here in Alaska. This is our only car and at the moment it is not drivable.

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Accessing the knock sensor is not a hard job when the front seats and floor are removed, should take no longer that 2 hours at a dealership. It is a common fault for the knock sensor to fail & will give obvious problems with power. Also, the check engine light should illuminate. Very sorry you have had to spend this kind of money.

Posted on Mar 10, 2011


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