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Pinky

Member Since: 09 Jun 2016
Location: England
Posts: 210

2011 Defender 110 Puma 2.4 DCPU Baltic Blue

Coolant woes!

So, on top of my ABS problems I now have a coolant problem. It is being pushed out of the cap and the heater valve. I had a new heater valve fitted a few months ago because it was leaking but now it’s much worse and coming from the cap which again was replaced. I’m guessing something is pressurising it. I have no overheating, the gauge remains steady at half way, no problem starting, runs fine pulls ok, there is a slight stutter if I over rev before changing gear but that could be to do with the map. I read on another thread that the egr cooler could be a cause of a pressurised system, any other thoughts gratefully received.

2nd Sep 2019 2:41pm

andydef90

Member Since: 09 Feb 2015
Location: yorkshire
Posts: 617

2014 Defender 90 Puma 2.2 HT Corris Grey

there is more than one cap check you have the right one also is the thermostat working correctly if slow to open that could cause pressure in the system good luck

3rd Sep 2019 6:09pm

Pinky

Member Since: 09 Jun 2016
Location: England
Posts: 210

Definitely have the right cap, had several over the years! I think I’ll give the thermostat a try before going to the indy.
Thanks.

3rd Sep 2019 7:53pm

Sulisuli

Member Since: 30 Oct 2016
Location: South west
Posts: 4799

2015 Defender 90 Puma 2.2 HT Corris Grey

I’d be checking the thermostat next, good luck hope it’s a cheap fix for you

2015 HT XS 90
2008 SVX 90
2000 XS TD5 90

3rd Sep 2019 7:55pm

Pinky

Member Since: 09 Jun 2016
Location: England
Posts: 210

So, I’ve changed the thermostat and things seem ok so far. The temperature gauge comes up so much quicker than before and no expulsion of water yet! However, the bottom hose is still cold even after a run, is that normal?

16th Sep 2019 7:37pm

NickMc

Member Since: 01 Oct 2014
Location: Norn Iron
Posts: 1676

Is your water pump ok?

16th Sep 2019 9:55pm

Pinky

Member Since: 09 Jun 2016
Location: England
Posts: 210

How would one tell?

17th Sep 2019 6:16am

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