hi
firstly i have just changed the thermostat on my 407 2.0 hdi 136, blimey what a job i have never seen a thermostat housing so big anyway now the temp does not sit steady .it will get up to about 80 maybe a tad more sit there for a mile or so then creep up to 85/87 ish before going back down to 80 ish.it will do this for the duration of the journey.i have no leaks and i did bleed the air out, the heater is also nice and hot any ideas?
secondly the oil temp needle seems to take an age to move off cold,maybe 6 or 7 miles but when it does it stays constant.is there a sensor somewhere or is this normal.thanks
407 temp questions
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Peter.N.
- Moderating Team
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Re: 407 temp questions
I wouldn't think that amount of variation is anything to worry about unless it goes well outside that range, it could be due to a faulty temperature sensor or maybe that the thermostat is a bit sticky.
The oil temperature always will rise more slowly that the coolant unless you are thrashing it, with gentle driving which is my norm the oil temperature rarely goes a quarter of the way up the scale.
If you think your thermostat was difficult to change, try doing one on a 2.1td XM, its at the rear of the engine on the bottom right hand side, you can't even see it
once you have done a couple you can do it by feel.
Peter
The oil temperature always will rise more slowly that the coolant unless you are thrashing it, with gentle driving which is my norm the oil temperature rarely goes a quarter of the way up the scale.
If you think your thermostat was difficult to change, try doing one on a 2.1td XM, its at the rear of the engine on the bottom right hand side, you can't even see it
once you have done a couple you can do it by feel.Peter