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Code 128 coolant thermostat malfunction?

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Old 03-03-2009, 11:12 AM
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Yea, my next guess would be a faulty thermostat...
Old 12-05-2012, 04:20 PM
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My 04 threw the same code last night. Found out it had a 160* in it which explains why it runs cooler but replaced thermostat with a factory 186* this morning and cleared code and everything is normal again!
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