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LinkBack | Thread Tools | Display Modes |
02-29-2020, 12:36 PM
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Here is their writeup on it: BMW THERMOSTAT PROBLEM AND SOLUTION. THE MOST IMPORTANT THING ON THIS SITE!! | BMW LOGIC7
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2005 X5 4.4i Build 04/05 Maintenance/Build Log Nav, Pano, Sport (Purchased 06/14 w/ 109,000 miles) (Sold 8/15 w/121,000 miles) 2006 X5 4.8is Build 11/05 Maintenance/Build Log Nav, DSP, Pano, Running Boards, OEM Tow Hitch, Cold Weather Pckg (Purchased 08/15 w/ 90,500 miles) 2010 X5 35d Build 02/10 Nav, HiFi, 6 DVD, Sports Pckg, Cold Weather Pckg, HUD, CAS, Running Boards, Leather Dash, PDC, Pano (Purchased 03/17 w/ 136,120 miles) 
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02-29-2020, 01:08 PM
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So, am: do some heated runs up a hill etc. It sounds like it should rise to 96-98 under load. Weird the error tripped at idle and 93 but I don't know the parameters where the heater kicks in to cool things off.
Maybe at idle the heater is supposed to open the tstat and keep it 90c. Maybe one of you V8 guys can report the temp at steady state at idle.
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2011 E70 N55 (me) 2012 E70 N63 (wife)
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02-29-2020, 01:20 PM
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Interesting read about the low temp tstat. Maybe your stuck open tstat is a good thing. :-).
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2011 E70 N55 (me) 2012 E70 N63 (wife)
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03-01-2020, 10:50 AM
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I fitted the 80c kit from the seller in the Czech Republic £69 4.5 years ago, the thermostat has recently failed open. I contacted him via eBay as to what thermostat is fitted/fits. Almost an immediate reply with FEBI p/n cost £9 The electric "map" plug lead is fitted with a 10 ohm resistor so as not to trigger codes. The engine runs, dependant on weather conditions between 88/92c. I converted to electric fan with a 93/97 switch. Never known it to use the 97c full speed. Will cycle 2 or 3 times after switching off. Havent had a coolant problem/leak since fitted.
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03-01-2020, 11:00 AM
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Should have added, as a bonus (in my eyes) the g/b oil runs 84/86c
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03-01-2020, 04:49 PM
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Quote:
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2004 4.8iS Check out the BMW CCA X Chapter on Facebook - https://www.facebook.com/groups/603822583674050/
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03-01-2020, 06:18 PM
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I would also, but I'm looking into the lower temp alternatives. Big deal with the 2 v 1.3bar coolant cap
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2011 E70 N55 (me) 2012 E70 N63 (wife)
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03-01-2020, 11:01 PM
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Replaced my power steering pump. What a PITA! Bentleys has incorrect info and makes it look a lot easier than it is. Hoping this kills the "vibration" noise when the truck is cold and idling in gear. Signs seemed to be pointing to the pump. We'll see.
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03-02-2020, 05:32 AM
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I found another loose end in the engine bay... looks like a sensor of sorts? Might have been damaged when the fan blew up, anyone know where this goes?
  Might be related to a persistent CEL I have, think the secondary air pump might also be a culprit since it's a bit loud, need to get the codes... my ODB scanner doesn't pick up much
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03-02-2020, 05:33 AM
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I found another loose end in the engine bay... looks like a sensor of sorts? Might have been damaged when the fan blew up, anyone know where this goes?
Might be related to a persistent CEL I have, think the secondary air pump might also be a culprit since it's a bit loud, need to get the codes... my ODB scanner doesn't pick up much
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