Two engines temperature totally different!

[julians]

Agreed…but he’s only doing 750 rpm

yep, thats why I said to ignore - I'm not entirely sure there is even a problem here at this stage. Until you can fully test the engines under decent load, there is no point in worrying about it .

Maybe (if I could be bothered) - I might remove the thermostats and put them in a pan of boiling water and check that they correctly open and close at the temperatures they are supposed to, but thats as far as I would go , and only because this is an easy test.

 

[Boater On Thames]

Check the manual. Saying need a special tool 9996863 to remove the thermostat. Is that a must?

 

[markc]

Check the manual. Saying need a special tool 9996863 to remove the thermostat. Is that a must?

I think that it's a drift for seating the new one. I'm no expert on Volvos, but I'd be happy to use different tools to reach the same result

 

[Mr Googler]

yep, thats why I said to ignore - I'm not entirely sure there is even a problem here at this stage. Until you can fully test the engines under decent load, there is no point in worrying about it .

Maybe (if I could be bothered) - I might remove the thermostats and put them in a pan of boiling water and check that they correctly open and close at the temperatures they are supposed to, but thats as far as I would go , and only because this is an easy test.

just checked the manual…still closed at 75c for the pan test.

 

[Boater On Thames]

That makes me feel safe now. So my engines are not having big trouble. Looks like only need to check or replace the starboard (60 C one) thermostat. Thank you very much for all of you!

 

[AndieMac]

That makes me feel safe now. So my engines are not having big trouble. Looks like only need to check or replace the starboard (60 C one) thermostat. Thank you very much for all of you!

If the thermostats haven’t been changed for a decade or two, replace them anyway as a matter of preventative maintenance.

 

[Boater On Thames]

Ok. I am learning how to remove it. Looks quite complicated. Need to remove a lot of parts to get to the thermostat. The number 28 item is the thermostat in the picture.

 

[markc]

I would make sure you have a set of replacement gaskets on hand, plus you'll need some fresh coolant before you start

 

[Boater On Thames]

Good idea! Thanks. I don't have any. Have to order some.

Oh. Maybe I will just keep using her as is. Then replace the thermostats in November together with the annual service.