Replace knock sensor harness when replacing head gasket on Toyota T100

The head gaskets are prone to leaks in as little as 60,000 miles. When the head gasket is replaced, the knock sensor harness should be replaced as well, as it can be damaged by leaky head gaskets, resulting in a serious decrease in fuel efficiency or in long term engine damage.

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Average mileage: (–)
1 model year affected: 1993
1 person reported this problem
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