I HAVE A P0128 FOR COOLANT THERMOSTAT

  • Tiny
  • dom.r.matra
  • 1997 Chevrolet Blazer
  • 14,000 miles

I have a P0128, for coolant thermostat. Do I need to change the thermostat?
Also, I have a P0446. For Evap Emissions. What doe this fully mean?
Thanks.

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Monday, December 10th, 2012 AT 11:58 PM

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  • Tiny
  • dom.r.matra
  • Member

I meant 140M miles.

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Monday, December 10th, 2012 AT 11:58 PM
  • Tiny
  • homer1967
  • Expert
  • 902 posts

Yes you need to change the thermostat, that is a very very common issue on those vehicles, I do atleast one a month. The p0446 signifies that you have a leak in you evaporative system and could be anything from a bad or loose fuel cap, to a broken hose to a faulty valve. You need to take it to a shop that has the specialed equipment and knowledge to diagnose that code.

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Tuesday, December 11th, 2012 AT 12:49 AM

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