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Replacing coolant thermostat V70 2010 2.4D

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Old Jan 29th, 2021, 01:29   #11
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Originally Posted by Moussey View Post
I'm pretty sure my thermostat is knackered since the heater doesn't blow hot air and my shiny new bluetooth gizmo and Car scanner app (really impressed with them) show the coolant runs at about 50 deg C tops.

I'm also pretty sure its behind the engine, what a place to put it.

I am about to tunnel in from underneath and maybe the wheel arch, has anyone been in there and have any tips?
I could be wrong however my understanding is that from what you describe this is on the EURO 5 (205 PS) D5 ... while the earlier EURO 4 (185 PS) D5 (like mine) the coolant thermostat is on the upper front left side (as you look at the engine from the front of the car) where the radiator top hose joins the engine block. The thermostat is inside a housing that the top hose attaches to and it also has the coolant temp. sensor screw into that same housing. The confusion probably exists due to the fact that 2009 was the year when the D5 went from EURO 4 to EURO 5 in the UK at around September/ October time IIRC.
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Old Jan 29th, 2021, 09:53   #12
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Some engines have the thermostat on their right side, towards the windscreen in the car. Awful to reach.
Normal operating temperature in my D5 diesel is 88°C.
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Old Jan 30th, 2021, 13:50   #13
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Thats where mine looks to be. Think Model Flyer needs to post some photo's.
Hi tt82 . I'd like to post some pics but V70's , mine and my sons have been gone now a few years .
Moved over to Jaguar XF Sportbrake. After 20 plus years of Volvo ownership.
Different car similar problems caused by Mr Fords interference but far better drive and fuel economy .
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Old Jan 30th, 2021, 16:59   #14
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Some engines have the thermostat on their right side, towards the windscreen in the car. Awful to reach.
Normal operating temperature in my D5 diesel is 88°C.
That would be on the euro 5 D5 models, so 2009 onwards. Its an awful job to replace the thermostat on the newer models from what I've heard/read & not one that can be done in a few minutes either. There's a fair amount of disassembly involved to get to the part in question & that's why Volvo charge upwards of £400 to do it.

Its a much simpler job on the euro 4's though (how it should be). Why they put the thermostat in such a daft place on the euro 5's is beyond me.
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Old Jan 30th, 2021, 18:38   #15
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Why they put the thermostat in such a daft place on the euro 5's is beyond me.
A parting gift from Ford to Geely?
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Old Jan 31st, 2021, 13:34   #16
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Why they put the thermostat in such a daft place on the euro 5's is beyond me.
If you take the view point that the service and the parts departments role is to generate revenue for corporate bodies. They are not there to make our lives easy in any way.
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Old Jan 31st, 2021, 23:40   #17
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If you take the view point that the service and the parts departments role is to generate revenue for corporate bodies. They are not there to make our lives easy in any way.
I suppose not. How nice of them.
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Old Feb 1st, 2021, 13:25   #18
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Over the years my take on inaccessibility of engine components seems to be that the designers worried more about efficient and cost effective assembly on the assembly lines rather than about maintenance and not that they have devious plans to run up servicing bills.

I had a car where the manufacturer wouldn't sell you low cost ABS reluctor rings and you had to buy the whole drive shaft because they bought the drive shafts complete with the rings attached so they didn't bother to put separate rings in the parts inventory. If you bought after market rings, they fitted perfectly but on the assembly line they hadn't wanted to be bothered with assembling the rings onto the shafts so they bought them complete and only sold them that way. The owners club fumed over this but I could see that the fiddly job of putting the rings on the shafts wasn't something that the manufacturer wanted to have to do and the spares situation flowed from that.

I suspect that the thermostat site at the back of the engine is of no consequence when the unit is attached to the engine on the engine assembly line and only becomes a problem when it has to be replaced with the engine in the car. Ford would have prioritised cheap assembly over everything while I suspect that the old Volvo company would have figured in the maintenance consequences, but then Volvo was never a cheap car and Ford always strived to make their cars as cheaply as possible.
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Old Feb 1st, 2021, 15:15   #19
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Volvo do conduct revisions, from the service point of view, when they are designing new models. Especially things that need access during regular maintenance are considered, since they don't want to show up in tests with a high service cost for no good reason.
But in most tests, by car magazines and similar, they don't show the cost of replacing the thermostat. Most probably due to the fact that with all sensible designs, it's a simple job.

I've not studied in detail why they moved it from the upper front left side location on the engine to one you can hardly even see, let alone reach to.
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Old Feb 1st, 2021, 17:25   #20
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Just in the process of doing mine on the E5 D5. (See progress thread)

Picture gives you the bits I’ve had to remove to reach the thermostat. They’re just stacked in the boot, but you get the idea. This definitely is the worst one I’ve ever attempted!
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