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Re: 90 4-Runner H2OS signal, Code 25 & 26
Posted to Technical Discussion Forum on 4/9/2000

Hi Brian, I believe there is a TSB about this combination of codes on the 3VZ-E engine. Check the play in the distributer, if it is more than 1.5 MM it could be the cause of these codes.

To clarify, check the play between the distributer and cam by pulling b... Login to read more.