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    gdcskates Posts: 2, Reputation: 1
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    Sep 23, 2010, 09:24 AM
    1991 toyota previa engine check light kicks code 22 water temp sonsor.
    I been told to rewire the harness coming from the sensor to the computer. Did that no help. I have changed the computer, no help. I think that there is a blockage in the coolant system. My temp needle spickes from time to time. Not from being too hot but from air trapped in the system and the coolant not coming in contact with the sensor. Is there a flush procedure and a bleed procedure.

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