Volvo Community Forum. The Forums of the Volvo Owners Club

Forum Rules Volvo Owners Club About VOC Volvo Gallery Links Volvo History Volvo Press
Go Back   Volvo Owners Club Forum > "Technical Topics" > S80 '06> / V70 '07> / XC70 '07> General

Notices

S80 '06> / V70 '07> / XC70 '07> General Forum for the Volvo S80 '06> / V70 '07> XC70 '07> models (V70 Generation 3)

Information
  • VOC Members: There is no login facility using your VOC membership number or the details from page 3 of the club magazine. You need to register in the normal way
  • AOL Customers: Make sure you check the 'Remember me' check box otherwise the AOL system may log you out during the session. This is a known issue with AOL.
  • AOL, Yahoo and Plus.net users. Forum owners such as us are finding that AOL, Yahoo and Plus.net are blocking a lot of email generated from forums. This may mean your registration activation and other emails will not get to you, or they may appear in your spam mailbox

Thread Informations

Duff Thermostat

Views : 410

Replies : 11

Users Viewing This Thread :  

Reply
 
Thread Tools Display Modes
Old Jan 12th, 2021, 17:16   #1
reggit
Premier Member
 

Last Online: Today 14:03
Join Date: Feb 2012
Location: Preston
Default Duff Thermostat

Decided to plug my ELM327 into the car whilst on a long motorway run so I could monitor the coolant temperature.
It didn’t rise about about 75 Celsius, and fell as soon as load was taken off the engine.
Me thinks ‘stat has expired in the open position.

Any tips on replacing it?

Who on earth ever decided it was a good idea to get rid of temperature gauges from cars.... may partially explain my absolutely pants mpg!

Car is a MY2010 euro5 D5 205bhp

Edit: found a thread on it - https://www.volvoforums.org.uk/showthread.php?t=197671
Think it’ll be going into an independent specialist to be done, too much hassle for the time I’ve got!
__________________
2009 Volvo V70 D5 (205bhp) r-design 170,000 miles

Last edited by reggit; Jan 12th, 2021 at 19:18.
reggit is online now   Reply With Quote
Old Jan 12th, 2021, 19:55   #2
Tatsfield
Premier Member
 
Tatsfield's Avatar
 

Last Online: Today 11:21
Join Date: Nov 2015
Location: Poole
Default

I read in a forum post that for a job which should be seen as the changing of a consumable, changing the thermostat is not the simple job that it is on most other cars. It's a poor design decision because thermostats slowly degrade and we shouldn't have to wait until the cars performance falls to a low point before realising that the change needs to be done.

On a previous car the regime was to change the thermostat and the coolant temperature sensor every 3 or so years to ensure that the running temperature of the coolant around the block and the coolant temperature reported to the ECU to control the fuelling were accurate and that the engine ran at its most efficient. It used to be the loosening of three bolts, removing the thermostat chamber cover, taking out the old one, putting in a new one, replacing the cover and tightening the bolts. 20 minutes work for the DIY owner.
__________________
2012 XC70 SE Lux Polestar 230 bhp D5 Auto Oyster Grey
Tatsfield is offline   Reply With Quote
Old Jan 12th, 2021, 21:50   #3
reggit
Premier Member
 

Last Online: Today 14:03
Join Date: Feb 2012
Location: Preston
Default

Tell me about it! Used to be a 20 minute job, looks like it may be 2 days!
__________________
2009 Volvo V70 D5 (205bhp) r-design 170,000 miles
reggit is online now   Reply With Quote
Old Jan 13th, 2021, 19:20   #4
minibull
VOC Member
 

Last Online: Yesterday 16:36
Join Date: Jan 2020
Location: Bradford
Default

I'm going to have to get mine changed as well, a recent trip over the tops on the M62 gave a temperature reading of between 90 and 65 degrees. The DPF regen not kicking in if the engine doesn't get up to normal operating temperature during shorter journeys is a concern.
__________________
2011 XC70 AWD SE LUX D5 Polestar Black Sapphire
minibull is offline   Reply With Quote
Old Jan 14th, 2021, 02:27   #5
Kev0607
Premier Member
 

Last Online: Jan 23rd, 2021 01:56
Join Date: Apr 2019
Location: Manchester
Default

Its bad enough not having a temperature gauge, but Volvo decided to put the thermostat in the most awkward place to add insult to injury.

Yet another example of what I imagine will be an expensive job to fix a part that would be done in minutes on other cars.
__________________
2007 (P3) Volvo S80 2.4D (163bhp) - 103,000 miles.
Kev0607 is offline   Reply With Quote
Old Jan 14th, 2021, 11:46   #6
Tatsfield
Premier Member
 
Tatsfield's Avatar
 

Last Online: Today 11:21
Join Date: Nov 2015
Location: Poole
Default

Perhaps if Volvo owners shifted their mind set on thermostat replacement and looked at it in the same way as cam belt replacement then we would be routinely scheduling the work every 2 or 3 years regardless of whether we had discerned faults because by that time the thermostat might be pretty far gone and the effects of that would be costing us money in fuel etc any way although we might not notice the gradual drop off in performance over the long period of time it takes for the wax capsule to degrade and fail. What life expectation should we have for this ancient technology component? Whatever it turns out to be, we need to factor that into a routine maintenance and replacement schedule for our Volvos perhaps together with the coolant temperature sensor which also has dramatic effect on performance which can onset slowly with gradual degradation of the sensor before it actually fails.
__________________
2012 XC70 SE Lux Polestar 230 bhp D5 Auto Oyster Grey
Tatsfield is offline   Reply With Quote
Old Jan 14th, 2021, 13:50   #7
Model flyer
Master Member
 

Last Online: Yesterday 15:45
Join Date: Jan 2006
Location: Kent,pothole capital of UK.
Default

If your lucky enough to have the engine with the thermostat at the top left of the engine ( looking from the front ) then its a breeze to change . If on the other hand you have one of the frankenstien engines that has the thermostat tucked up behind the turbo its really awkward job . So unless your a masochist or enjoy torture bite the bullet and pay Volvo to fit one . It will be the thick end of £400 ( may be more now ) but worth it
__________________
The secret of flight is to aim at the ground and miss !

Previous Volvos 740 GLE . V40 CD ,V70 2.4 SE LPT.V70 D5 P2. V70 D5 Se Lux P3. Current Jaguar XF Sportbrake but still like Volvos
Model flyer is offline   Reply With Quote
Old Jan 14th, 2021, 13:54   #8
Kev0607
Premier Member
 

Last Online: Jan 23rd, 2021 01:56
Join Date: Apr 2019
Location: Manchester
Default

Quote:
Originally Posted by Model flyer View Post
If your lucky enough to have the engine with the thermostat at the top left of the engine ( looking from the front ) then its a breeze to change . If on the other hand you have one of the frankenstien engines that has the thermostat tucked up behind the turbo its really awkward job . So unless your a masochist or enjoy torture bite the bullet and pay Volvo to fit one . It will be the thick end of £400 ( may be more now ) but worth it
Which engines or model years had the thermostat at the top left of the engine?
__________________
2007 (P3) Volvo S80 2.4D (163bhp) - 103,000 miles.
Kev0607 is offline   Reply With Quote
Old Jan 14th, 2021, 15:19   #9
Model flyer
Master Member
 

Last Online: Yesterday 15:45
Join Date: Jan 2006
Location: Kent,pothole capital of UK.
Default

The early 2007 V70 to mid 2009 had an easy to get to thermostat. Then the late 2009 had the difficult version. My son had that one ! I believe that changed again in 2011 to tricky type. Volvo tend to change around for some reason . Dont know about later versions as have moved away from Volvo for a few years.
The simple to change thermostats are easy to see once the engine cover is pulled off.
Of course you could buy a V70 with the buried thermostat and never have a problem .
The symptoms on my sons car was that the heater never really got hot so he plugged a diagnostic in to read the temp and it was well low. With new thermo fitted car felt better and was more economical.
He met the technician who fitted the new thermostat when he went to collect from our local main dealer. He was well brassed off and said the book allowed three hours for the job and it took him over five hours ! and thats with a car lift !
__________________
The secret of flight is to aim at the ground and miss !

Previous Volvos 740 GLE . V40 CD ,V70 2.4 SE LPT.V70 D5 P2. V70 D5 Se Lux P3. Current Jaguar XF Sportbrake but still like Volvos
Model flyer is offline   Reply With Quote
Old Jan 15th, 2021, 15:58   #10
100K+
Premier Member
 

Last Online: Today 10:15
Join Date: Aug 2008
Location: Newcastle
Default

Quote:
Originally Posted by reggit View Post

Who on earth ever decided it was a good idea to get rid of temperature gauges from cars.... may partially explain my absolutely pants mpg!

!
If you do find out who he is please let me know, as I would like to have a very strong word with him too.
But then I'm a dinosaur, I'd still like the 1600E dash with the four 2" instrument cluster

Cheers
Bob
100K+ is offline   Reply With Quote
The Following User Says Thank You to 100K+ For This Useful Post:
Reply


Currently Active Users Viewing This Thread: 1 (0 members and 1 guests)
 
Thread Tools
Display Modes

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off

Forum Jump


All times are GMT +1. The time now is 14:05.


Powered by vBulletin
Copyright ©2000 - 2021, Jelsoft Enterprises Ltd.