Question about 1993 Toyota Corolla

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Automatic won't kick down

Takes a very long time for the automatic to shift to 'overdrive'. Runs ok, temp guage looks ok but I suspect its not being registered as hot. Could it be a thermostat issue - if it is, where is it?

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  • stan_vatovec Nov 25, 2008

    Reasonably easy to replace? What's the access like? I read somewhere it was behind the alternator and it had to be removed. Does that sound right?



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The overdrive does not engage until the coolant reaches 177 degrees F. If your thermostat is sticking open, or staying "open too long", your OD will not engage. The thermostat is in a round housing, at the end of the large rad hose, on the end of the cylinder head. Hope this helps, and Thnaks for choosing FixYa!

Posted on Nov 25, 2008

  • Toyota Ed Nov 25, 2008

    No, the thermostat is not anywhere near the alternator; you were told wrong. The thermostat is under the distributor, on the end of the cylinder head. Drain the coolant, remove the two nuts on the thermostat housing, pull the housing off, and then remove/replace the thermostat. Note the position of the "wiggle valve" on the thermostat, it should be positioned at 12 oclock/straight up.

    Easy to do. Plus, the new stat comes with an O-ring, no gluing necessary! The graciousness of a FixYa rating for my assistance would be greatly appreciated!

  • Toyota Ed Nov 25, 2008

    Thanks for the FixYa. Much appreciated.



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