Question about 2002 Chevrolet Astro

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Diagnostic code P0128 on a 2002 chevy astro van

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You could shotgun both parts and replace both...or just remove the thermostat. place it in a pot of water with a thermometer and warm it up. watch when it opens. if it opens before the temp stamped on the theormostat then it is bad and will not require replacement of the temp sensor. If it opens at the temp on the t-stat then replace the sensor. Rarely caused by sensor. Mostly caused by t-stat. no need to spend the money on both when you only need one.

Posted on Nov 28, 2009

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Replace the thermostat,and the coolant sensor,and itt will fix ya up.

Posted on Oct 06, 2009

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