Thermostat/ temperature

B

bakers

Member

Posts

61

• Friday at 17:29

• #1

Got a 300TDI defender, it’s always run a bit cool to the point the heater isn’t hot, gauge shows about 1/4.

Decided to change thermostat see if any improvement, put in a 88 degree and now the gauge is almost at top of black, but not ‘boiling’

Original was a Waxstat.
Put them both in a pan and the waxstat opens at a lot lower temperature than the new one.

Is the new gauge temp too high and do waxstats open at lower temperature than the 88 degree ones.Not altered anything else.

Steve

 

Attachments

• 
  IMG_3502.jpeg

  214.8 KB · Views: 8
• 
  IMG_3502.jpeg

  214.8 KB · Views: 8

A

Anaconda

Well-Known Member

Posts

5,516

Location

Thames Valley

• Friday at 18:16

• #2

Isn't that about right if the engine is hot?
You need to test the coolant temp with one of them hand held temperature gun thingies. If all OK then all you need to do is keep that temp position as normal running temp.
My son's 200tdi did exactly the same thing after fitting a new thermostat except it sits even higher. It's doesn't over heat, proven with a secondary gauge .

 

A

Anaconda

Well-Known Member

Posts

5,516

Location

Thames Valley

• Friday at 18:19

• #3

Digital Thermometer Infrared Gun IR Laser LCD Temperature Non-Contact Meter Gun | eBay UK

â Laser Targeting Perfect for surfaces that are hot, moving, toxic, or otherwise unsafe to touch. Never aim the laser at human or animal eyes, or indirectly via reflective surfaces. â High-Visibility LCD Display.

www.ebay.co.uk

One of these

 

dag019

Well-Known Member

Posts

6,677

Location

Warwick

• Yesterday at 12:45

• #4

Your pictures match what my garage does and I was a little concerned it was getting too hot. But I also have an 88 stat fitted. I would have expected the gauge to sit at about halfway but sits where yours is. But even towing doesn’t really move above that. So maybe that is just the right point for the higher temp stat.

 

tottot

Well-Known Member

Posts

8,543

Location

west wales coast

• Yesterday at 15:48

• #5

The modern made stats are often rubbish. Last year I had 3 replacements when original failed after many years.
Number 1 did not work at all, 2 packed up after a month. Number 3 a new in the box original Waxstat still fine.
If you want to know your actual temp fit an after market capillary gauge that reads in numbers/degrees.