ideal running temperature?

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XantiaDaveEire
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ideal running temperature?

Post by XantiaDaveEire »

on a diesel xantia ...might seem a bit stupid to ask.. :oops:
1998 Xantia 1.9 TD 186k
2008 C4 grand Picasso exclusive 105k #-o
Peter.N.
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Post by Peter.N. »

Thermostats are normally around 90C
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Post by citroenxm »

I think an idicated 90 deg is too hot - Im comfortable with the guage showing 75 - 80 deg - If head gasket is good and clear, it will give pleanty good enough heating, and leaves pleanty of room for warming up when stuck in traffic..

Paul
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KP
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Post by KP »

Diesel's usually get upto about 80' on the dash and should only get to 90 when working hard or in traffic. Saying this my Activa gets upto 90' quickly but the oil takes ages to get anywhere near this. Oil is a better reflection of the overall engine heat in my experience.

If its getting to 90' you need to flush your coolant system out :-)
Xantidote
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Post by Xantidote »

The original thermostat in my 1.9TD Xantia had 83 degrees stamped on it, and in normal running the gauge hovered at 80. If the temperature climbed to 90 on the gauge, then the fans would cut in.

New thermostat recently fitted, and temperature hovers on bottom of the 80 mark on the gauge. So situation normal :)

Martin
Martin

1995 Xantia TDLX (deceased :( )
citroenxm
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2010 Peugeot 207 SW 1.6 8v HDi 161k and rising
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Post by citroenxm »

Oil is always slower to warm through. My V6 water gets to 85 - 90 but the oil still shows cold - untill a good 15 miles after then it starts to rise...

Paul
Sharing a pug 207 1.6 hdi Sw 16v.
M reg Xm 2.1 td auto exclusive S2 269k and rising
L reg XM V6 12v SEi auto .. Light project

A very sad...
1994 XM 2.1 d auto
addo
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Post by addo »

It's my understanding that an OEM thermostat is specified to more or less the preferred running temperature.

Shooting the temps with a pyrometer in various places, is a good way to feel how it's behaving - check the head near thermostat housing, the block on opposite side, upper radiator hose. I would trust the gauge on the dash for anything other than a general indication.
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