Thermostat OEM Mazda or Motorcraft

Soon as i bought Motorcraft all was normal again

Make sure you use the motorcraft thermostat.

Go with the Motorcraft thermostat as it has a rubber seal on the outside edge.

Always buy the Mazda OEM branded thermostat from any local or online Mazda factory parts retailer, this is not the item you want to save a couple bucks on, no matter how much you trust that ‘other’ brand.

Make sure you use a Mazda OEM thermostat. I wouldn’t trust anything but OEM for those.

Buy an OEM thermostat from Mazda. The aftermarket ones are sometimes not identical.

They kept it for another day and were obviously able to replicate the fault and replaced the Thermostat as they thought it was sticking causing the Temps to fluctuate.

Thermostat failed multiple times

I’ve had a Motorcraft thermostat fail after 100mi on my Ford

I just had the code P0126 on my 2021 mazda cx-30 with 20,000 miles. Seems to be the same issue