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      01-13-2013, 08:17 AM   #1
chriz1
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320d lci thermostat change

Hi,
Is there a walk through guide about on own to change the main thermostat on a 320d n47 engine ? Car will get to about 86 degrees no more
Cheers
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      01-14-2013, 04:04 AM   #2
Dan-danGT
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86c is better than mine! Mines stay at 80 doing about 80-90mph. Around town it goes to 82 that's max I get.
I'm not sure about the guide, use the search button. Not to difficult apparently, I will be doing mine in a month or so.
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      01-14-2013, 07:56 AM   #3
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I would its similar to others -
Remove engine cover (5 bolts)
Remove EGR stat (might as well replace this at the same time)
Undo 2 pipes (might loose a spoonfull of coolant)
Remove the EGR cooler (difficult part as one of the torx bolts difficult to get to)
Undo main stat/pipes
Reversal of the above
Bleed system/top up coolant

Above is a very simple guide but it is DIY if you are handy with spanners
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      01-14-2013, 02:38 PM   #4
chriz1
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Thanks mate, wouldn't it need a full fill of coolant after doing this though?
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      01-14-2013, 03:42 PM   #5
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I will see if I can dig out the pdf manual a fellow e90 member wrote up

Changing the egr stat alone wont need topping up, but with the main stat you will loose majourity of your coolant. I used 1 bottle of bmw coolant mixed with 1 bottle of water in 50:50 ratio - make sure you buy coolant from BMW 9 a bottle but its the right spec
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      01-14-2013, 03:43 PM   #6
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http://www.e90post.com/forums/showthread.php?t=632656
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      01-14-2013, 04:01 PM   #7
chriz1
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Top man thanks mate
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      01-15-2013, 03:26 PM   #8
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My 325d is getting to between 72 and 78c (mostly staying at 75 on 20+ miles journeys) Is this bad?
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      01-15-2013, 03:37 PM   #9
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Yes, far too low - you will be loosing economy and risking possible future DPF issues.
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      01-15-2013, 03:39 PM   #10
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Oh eck! 6 glow plugs and two thermostats now on the shopping list
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