Mazda Miata (MX-5) This compact RWD model, offered with many engines options for those are who want to cruise with the top down in a base model, or hit the track in one of the high performance models, has been a popular model since its introduction.

2007 MX5 NC error P0126 - what is normal water temp

  #1  
Old 05-07-2018, 08:56 PM
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Default 2007 MX5 NC error P0126 - what is normal water temp

So my daughter and I took a red eye flight several hundred miles away to buy a 2007 MX5 GT and took it on a road trip home. It only has about 48000 miles on it. We had a blast. However, about 4 hours into the trip, the check engine light came one. The original owner had installed a scan gauge- code was P0126 - which is coolant temperature related. I cleared the code at least a half a dozen times. I now have the scan gauge set on water temp - it was about 159 degrees Fahrenheit. During the trip the cluster gauge for water temp was near the middle, but slightly over towards the cool side.

I am probably going to take it somewhere for service and get the thermostat replaced. In the meantime, I'm going to keep an eye on water temp using scanguage. Does anyone know the normal water temp range for my car?
 
  #2  
Old 05-08-2018, 07:44 AM
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Highway cruising should be about 200 to 210 degrees fahrenheit.
 
  #3  
Old 05-08-2018, 08:20 PM
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ok, it threw the error twice today. Both times the water temp was between 155 and 160

anyone have an opinion weather it's the actual thermostat or a sensor? I thought I read somewhere that there is a sensor that can also go bad.
 
  #4  
Old 05-09-2018, 04:49 AM
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Remove the thermostat, flush the cooling system, fit a brand new genuine thermostat, fill cooling system with FL22 coolant, bleed the system.

Clear the code, drive it & see what happens.
 
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