Water gauge temp test

  #1  
Old 04-10-2019, 08:45 AM
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Default Water gauge temp test

Hey guys.

Just bought a 93 240.

Its a good little thing, but Iím still figuring out itís issues.

Ive noticed the water temp gauge barely moves off the lowest position. See pic attached.

I saw the previous owner replaced the radiator. In the boot there was also some chemi-weld.

Im concerned the radiator replacement was a quick and easy fix for a bigger issue and perhaps the chemi-weld is a safety measure in case it happens again.

My question is - how can I check the water gauge on the gauge cluster is representing whatís going on in the engine?

i live in Australia so ambient temperatures can climb pretty high so this is a concern driving a car designed for European conditions.

Anyone have any guides of how to check?


This is where the gauge sits - irrelevant of highway driving or bumper to bumper city in the summer.
 
  #2  
Old 04-10-2019, 09:45 AM
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welcome and you should read this 240 Temp Faker
 
  #3  
Old 04-10-2019, 06:49 PM
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Originally Posted by silvermine View Post
welcome and you should read this 240 Temp Faker
Whaaa.. splendid mate!

Thank you!
 
  #4  
Old 04-11-2019, 06:09 AM
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Actually it sounds to me from your symptoms that your thermostat is stuck wide open or missing rather than the faker board.
 
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Old 04-11-2019, 06:59 PM
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Originally Posted by act1292 View Post
Actually it sounds to me from your symptoms that your thermostat is stuck wide open or missing rather than the faker board.
if it eventually got up to temp - I would suspect the same. But because it never moves - I think itís not reading temperature.
 
  #6  
Old 04-12-2019, 05:59 AM
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When the thermostat is stuck open, it will not go up very much at all. When mine was stuck open, it wouldn't move past what yours is reading in the picture. When it was below freezing out, I could barely get it off the lower line.
 
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Old 04-12-2019, 03:35 PM
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with the engine idling after sufficient driving to heat it up, take a IR thermometer and read the temp of the hose from the water pump
 
  #8  
Old 04-15-2019, 09:36 PM
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The heater is warm.. not hot - but warm.
I have noticed the temperature of the air rising slightly - but not much.
May order a new thermostat none the less - no harm in replacing.

thanks guys
 
  #9  
Old 04-17-2019, 05:18 AM
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that definitely sounds like a stuck open thermostat, so your engine is never getting up to proper operating temperature. your gas mileage is suffering due to this, fixing it should improve the economy and performance.
 
  #10  
Old 04-17-2019, 07:28 AM
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and, of course if after removing it isn't obvious, the OP could test the existing t-stat in a pan of boiling water to see if it is actually working properly .. or not..
 
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