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BMW 3-Series (E90 E92) Forum > BMW E90/E92/E93 3-series General Forums > Regional Forums > UK > UK Technical Forum > My Thermostat change 330d



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      02-17-2013, 02:12 PM   #23
335DEE
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Mines done .. Got a 5MPG improvement over the same journey and now definitely am aware of regens ( never sensed one before ) also had a slight hesitation on light throttle every now and again at about 1750 revs which appears to have gone now too.

from me
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      02-17-2013, 02:47 PM   #24
mistryn
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You still have your dpf Tim?
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      02-17-2013, 03:00 PM   #25
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Quote:
Originally Posted by mistryn View Post
You still have your dpf Tim?
Yes I do , although I did wonder if i did not because the custom exhaust I have plus the seriously disgusting 90's peugeot 306 DTurbo stink that emanates from the pipes!
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      02-18-2013, 03:43 AM   #26
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Got mine finished late on Saturday night. Not had a chance to check the MPG but it runs at a lot better temp.

Between 88 - 97 now. Compared to 65 before.
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      02-19-2013, 03:22 PM   #27
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Tim,
Is your d smokey? I've never seen a BMW d with a DPF blowing smoke, the two I've had always kept the exhaust tips spotless!
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      02-19-2013, 04:23 PM   #28
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Quote:
Originally Posted by o0timbo0o View Post
Yes I do , although I did wonder if i did not because the custom exhaust I have plus the seriously disgusting 90's peugeot 306 DTurbo stink that emanates from the pipes!
It shouldn't stink like that! Mine doesn't smell at all.
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      03-03-2013, 03:52 PM   #29
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Just a quick thanks for this guide, changed the thermostat on my 335d yesterday.

Slight difference between the 335 & 330 as there is a mounting bolt holding the air box to turbo pipe on that isn't mentioned, no big deal just incase anyone else reads this.

I filled the egr cooler up before I put the stat back on and it seemed to make bleeding easy.

Oh and top tip, make sure you don't drop any bolts
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      03-25-2014, 03:35 PM   #30
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Reviving an old thread - will be giving this a go soon if the egr stat i ordered does not resolve issue of temp dropping on motorway, having had a 530d, 335d and now 330d, i am confident that either both or one of the thermostats need changing as temperature drops from 80+ locally to 60 or so on motorways and i have not felt a single regeneration in the 400+ miles so far

In the past a thermostat change has shown quick warm up times and stable 90+ degrees temp regardless of type of journey
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      03-25-2014, 07:07 PM   #31
Jules59
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Changing thermostat on the N57 330D is quite different.
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      05-30-2014, 04:44 PM   #32
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did mine tonight.... took 3 hours and its all back together ready for coolant in the morning...a fair bit harder than the days of a mk3 escort or astra gte where the thermostat was just three bolts right in front of you with nothing else to take off!

I would just add that make sure you have a good range of extension bar lengths and a flexible drive wouldn't go amiss either.
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      05-31-2014, 04:55 AM   #33
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coolant done, bled and road tested - sits at 88 degrees nicely now took it up to 90 degrees, back home, checked for leaks and topped up with half a litre. Job done. hopefully see a slight increase in mpg.
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