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#171
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Knock on wood, my thermostat at 90k+ miles seems to be functioning well. 84C+ even in cold weather. The only time it's lower is sometimes when it's really cold but I never see it below 80C unless I'm coasting down a long hill and it's cold out. Sometimes it takes a while when it's really cold. I'm going to start paying closer attention. I've calculated over 32 mpg in the right conditions, maybe 28 mpg in the real deep winter highway driving.
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8/2011 X5 xDrive35d Sport, Black Sapphire Metallic, Black Nevada Leather, Fine Burr Walnut Trim 2/2001 M5, Jet Black, Exclusive Complete Black Walk Nappa Point Heritage Leather, Black Cubic Trim |
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#172
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Finally was able to change my thermostat today.
It took me exactly 4.5 hours from start to finish. Not that hard with help of this thread! Great job OP!!! About that white connector you mentioned (that connects EGR cooler to some other connector) - you pull white thing back and firmly push it down, I used pliers but was able to repeat by hands as well. Tricky connector I must say. You need to do it in two steps. All other very close to what was described but I did not take off air hose coming from the intercooler to the throttle/EGR valve (big one on driver side with metal springs), I just undid top part and move it to the left so it clear way to take off shroud. Also, I did not take off intake muffler, it looks like you did that to fight with that stubborn connector. I did not find why else you need to take that off. All the rest as in DIY. Last edited by vetaldj; 07-18-2016 at 04:43 PM. |
#173
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I think mine stuck shut for a while.Hit 204*F when I shut it off. I noticed exhaust was really hot.So I hopped back in to see gauge .Ive never seen it past 188-190*F ,usually 184 tops.Went for a ride and shot back up to 197*F then cooled to about 190*F for a few miles.Still higher than usual.I bought a ScanGuard after reading this thread to keep my eye on temps.I don't think it has EGT.Do you think it's the thermostat?
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#174
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Do you mean ScanGauge? It has limited use with the X5d but I'm working with the company to get more commands working like EGT, transmission temperature, oil temperature, etc. and fully compatible firmware. Water temperature works great.
You didn't say what the outside temperature was or what you were doing but I've seen 210F before for brief periods on the hottest days and after hitting traffic or having stopped after a cruising period. Driving around,180-195F is pretty standard for me whether it's winter or summer.
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8/2011 X5 xDrive35d Sport, Black Sapphire Metallic, Black Nevada Leather, Fine Burr Walnut Trim 2/2001 M5, Jet Black, Exclusive Complete Black Walk Nappa Point Heritage Leather, Black Cubic Trim Last edited by josiahg52; 08-10-2016 at 10:31 AM. |
#175
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Yes scangauge.It was only 80* out with a steady 45mph of the last 5 miles before shutting car off.I restarted car to see the 204* after noticing the hot exhaust tings.It was 15* cooler out and car temp 20* higher than normal.Funny thing is I've tried to get car hot,191* tops and only for a brief second.Thanks for your reply j52
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#176
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The dealer recommend not using my Scangauge.Said a lot of codes tripped at one time.Lots of random codes that's didn't go together.Must have been when car cut out for split second and dash lit up on highway.Said I'd buy a new thermostat because they didn't change it because of no code?He said it isn't just a swap it had to be reprogrammed when swapped?
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#177
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Quote:
Wow!!! They said that new thermostat needs to be programmed?? Run away from that dealer if they told you so... |
#178
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Quote:
Throw in a bit more words... I know you know what you meant, but maybe explain what this means?? |
#179
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He might have ment the dash needed cleared if it got hot and I just change thermostat on the road.But I'm sure he said it'd ( thermostat) needed programmed.
The car is still under warenty,they don't change thermostat without a code or them seeing car HOT.I told him I'd get a new thermostat in case it needed changed out on the road.He said it wouldn't do any good because they'd have to program it.Said it'd be in limp mode but I think he took those words back and said the dash light would have to be cleared.From what I've read ,when thermostat shows signs of messing up it's not long after it takes shit. |
#180
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Thank you sgrice! Mine has 170k miles and discovered the thermostat was stuck open, plus had a code for the EGR Cooler Performance. I followed your instructions, without which I could not have done these procedures. I discovered that the door of the EGR cooler was stuck, and the inside all charred up. So I wound up replacing that as well. It passed NYS inspection and running fine ever since.
Here is what I did differently from you: 1) I left in place duct #3 before the MAF sensor, no need for Tite Reach tool. 2) I removed the plastic cover below the fan shroud, and the steel cross member underneath it. Originally I was trying to find the coolant drain cock, but ended up cleaning a lot of leaves and dirt out, and eased shroud installation. 3) I drained and collected about 2 gallons of coolant by disconnecting the long thin (about 35 mm) hose below the radiator shroud bottom cover. Minimal mess, and virtually no additional coolant leaking when later disconnecting any other hoses. Refilled the cooling system at the end with a vacuum filler. Thank you again for the detailed work procedure that allowed me to brave this job! 2010 xDrive35d |
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