1.9TD running temp

This is the Forum for all your Citroen Technical Questions, Problems or Advice.

Moderator: RichardW

Post Reply
User avatar
Xaccers
Posts: 7654
Joined: 07 Feb 2007, 23:46
Location: Milling around Milton Keynes
My Cars:
x 184

1.9TD running temp

Post by Xaccers »

Just wondering how your Xantias are running now the temperature has dropped?
Cassy normally runs at 80-90C but with the colder weather she's been sitting at 60C quite often.
Could it be the thermostat sticking open?
1.9TD+ SX Xantia Estate (Cassy) running on 100% veg
1.9TD SX Xantia Hatchback (Jenny) running on 100% veg for sale
Laguna II 2.0dCi Privilege (Monty)

DIY sphere tool
User avatar
spider
Posts: 3949
Joined: 05 Jan 2010, 14:28
Location: Derby.
My Cars: Soon, I hope...
x 77
Contact:

Post by spider »

In general an XUD will run around 80c regardless of the weather, possibly slightly less this time of the year (75 say)

Lower than 70 indicates gauge / sender issue (unlikely as they tend no to fail 'low' on these) or thermostat is slightly stuck open.

Just in my experience generally though this is. :)
Andy.

91 205D-Turbo, gone but still missed
02 106D, TUD5B, gone but not really missed apart from the MPG
User avatar
Xaccers
Posts: 7654
Joined: 07 Feb 2007, 23:46
Location: Milling around Milton Keynes
My Cars:
x 184

Post by Xaccers »

cheers spider, I guessed as much so bought a new stat a few weeks ago, will see about fitting it this weekend
1.9TD+ SX Xantia Estate (Cassy) running on 100% veg
1.9TD SX Xantia Hatchback (Jenny) running on 100% veg for sale
Laguna II 2.0dCi Privilege (Monty)

DIY sphere tool
jgra1
(Donor 2021)
Posts: 4625
Joined: 27 Nov 2005, 19:07
Location: Kent / Susssex
My Cars: 2010 C5 X7 2.0 hdi 160 exc auto
MG TF 135
Boxer II 2.2 camper conversion
BMW R1200RT
BMW K1300 R
Honda V F R 800 5thG / MT500 Armstrong
x 39

Post by jgra1 »

Xac mine suggests 85-90 in summer, often climbing 90 to a scary 98 until fans kick in.. I think now it's suggesting 75-80 more of the time..
I have little faith in the readings as such...


the coupe shows 70-80 in summer and less at this time of year.. although I have little faith in those numbers also. would be nice to know for sure
..I brought a digital temp gauge on ebay for my chevy, with a probe inserted into the pipework, cost me about £10 I think..
User avatar
Old-Guy
Posts: 1798
Joined: 11 Sep 2008, 12:08
Location: Gloucestershire
My Cars: 2011 Grand C4 Picasso VTR+ 1.6HDi in Kyanos Blue
1995 Xantia Estate SX 1.9TD in Vert Vega "The Green Lady" - now owned by XanTom
1998 Xantia 2.1 VXD Estate in Mauritius Blue - R.I.P. (terminal tin-worm)
x 17

Post by Old-Guy »

Once the green estate has warmed up, she runs with the needle rock-steady at 80ºC only climbing to about 85ºC (where the fans kick-in) if maneouvring or left idling.

At the risk of stating the obvious, a thermostat sticking open means longer warm-up times and when you use the heater, the engine temp will drop even further.

Changing the thermostat is very easy - you'll lose some coolant, so maybe time to change it?
2011 Grand C4 Picasso VTR+ 1.6HDi in Kyanos Blue
1995 Xantia Estate SX 1.9TD in Vert Vega "The Green Lady" - after 11 years now owned by XanTom
1998 Xantia 2.1 VXD Estate in Mauritius Blue - R.I.P. (terminal tin-worm)
davetherave
Posts: 880
Joined: 01 Apr 2009, 21:06
Location: Norwich
My Cars:
x 4

Post by davetherave »

My running temperature has drop around 5 degrees from 90 to 85., but prior to changing the stat earlier this year it was 60 degrees.
(95) XM Silver 2.1td Exclusive.
(87) Cx 2.5 DTR T1 undergoing major cosmetic surgery.
GPZ500s
colski
Posts: 101
Joined: 27 Sep 2010, 15:42
Location: United Kingdom
My Cars:

Post by colski »

My 1.9 td runs bang on 80, it only takes 1.5 miles to get to full running temp too :)
User avatar
VertVega
Posts: 1178
Joined: 01 Nov 2008, 19:39
Location: Province nordique de l'Union européenne
My Cars:
x 13

Re: 1.9TD running temp

Post by VertVega »

Xac wrote:Just wondering how your Xantias are running now the temperature has dropped?
Cassy normally runs at 80-90C but with the colder weather she's been sitting at 60C quite often...
Normally petrol Xantia (talking about mine) runs at 75-80 °C. During cold temperatures front grill cover would help.
Mostly diesel models are using grill covers during the cold period.

You can also make your own from a black polycarbonate sheet material and still keep your Xantia's street cred 8-)
Factory grille covers are clip-in designs but you can tie your DIY cover with suitable cable tiers.
Engine under trays are also good to use during winter season. Of course they are more expensive to buy
and more difficult to make on your own :(
C5 II 2.0i 16V - 2005 - Estate - 103KW - EW10A - Petrol - Manual
User avatar
DickieG
Monaco's youngest playboy
Posts: 4877
Joined: 25 Nov 2006, 09:15
Location: Buckinghamshire
My Cars:
x 38

Post by DickieG »

davetherave wrote:My running temperature has drop around 5 degrees from 90 to 85., but prior to changing the stat earlier this year it was 60 degrees.
Dave are you OK? I thought 37° was normal, or has your car learned how to type? :lol: :lol:
13 Ram 1500 Hemi
14 BMW 535D Tourer
19 BMW i3s
06 C3 Desire 1.4
72 DS 21 EFi Pallas BVH
User avatar
CitroJim
A very naughty boy
Posts: 49526
Joined: 30 Apr 2005, 23:33
Location: Paggers
My Cars: Bluebell the AX, Polly the C3 Picasso, Pix the Nissan Pixo, Propel the duathlon bike, TCR Pro the road bike and Fuji the TT bike...
x 6160
Contact:

Post by CitroJim »

DickieG wrote:
davetherave wrote:My running temperature has drop around 5 degrees from 90 to 85., but prior to changing the stat earlier this year it was 60 degrees.
Dave are you OK? I thought 37° was normal, or has your car learned how to type? :lol: :lol:
It's only when Dave goes running that he gets that hot :lol: :lol: :lol:
Jim

Runner, cyclist, time triallist, duathlete, Citroen AX fan and the CCC Citroenian 'From A to Z' Columnist...
User avatar
Xaccers
Posts: 7654
Joined: 07 Feb 2007, 23:46
Location: Milling around Milton Keynes
My Cars:
x 184

Post by Xaccers »

Are there any things I need to be wary of when changing the stat or is it a straight forward job?
1.9TD+ SX Xantia Estate (Cassy) running on 100% veg
1.9TD SX Xantia Hatchback (Jenny) running on 100% veg for sale
Laguna II 2.0dCi Privilege (Monty)

DIY sphere tool
User avatar
spider
Posts: 3949
Joined: 05 Jan 2010, 14:28
Location: Derby.
My Cars: Soon, I hope...
x 77
Contact:

Post by spider »

It's straightforward.

Depending on the type of thermostat housing it will either have a circlip holding it in, or just have a plastic housing bolted to 'hold' it in place.

I think the circlip ones were discontinued around 93 / 94 though, but having not seen one for about 5 years :oops: , my memory is failing.

Ensure you have a new seal if appropriate.

You can (if you wish) place a bowl or something under the engine (protect gearbox / wiring with a cardboard sheet) and only partially drain the cooling system (having take spillage precautions, just remove the top hose!) , it will need to be bled after anyway.

Then you will only want one or two litres of antifreeze, although if its due a change now is a sensible time.

Usual precautions obviously (don't want to tell you how to suck eggs) cold engine ;)
Andy.

91 205D-Turbo, gone but still missed
02 106D, TUD5B, gone but not really missed apart from the MPG
User avatar
Old-Guy
Posts: 1798
Joined: 11 Sep 2008, 12:08
Location: Gloucestershire
My Cars: 2011 Grand C4 Picasso VTR+ 1.6HDi in Kyanos Blue
1995 Xantia Estate SX 1.9TD in Vert Vega "The Green Lady" - now owned by XanTom
1998 Xantia 2.1 VXD Estate in Mauritius Blue - R.I.P. (terminal tin-worm)
x 17

Post by Old-Guy »

Xac wrote:Are there any things I need to be wary of when changing the stat or is it a straight forward job?
Cassy's thermostat is almost certainly located under the fuel filter housing. The top hose fits over an adaptor that's secured to the front of the thermostat housing by two bolts (10mm hex head IIRC). Can't remember if there's a gasket or a rubber ring.

Cassy's radiator should have a drain tap- bottom O/S. Makes draining off enough coolant fairly easy but you need something like a large washing-up bowl.

The time-consuming part is bleeding all the air out of the cooling system.

Living in a hard-water area, to mix up coolant I've always used rain water - plenty around this week!
2011 Grand C4 Picasso VTR+ 1.6HDi in Kyanos Blue
1995 Xantia Estate SX 1.9TD in Vert Vega "The Green Lady" - after 11 years now owned by XanTom
1998 Xantia 2.1 VXD Estate in Mauritius Blue - R.I.P. (terminal tin-worm)
Post Reply