problem solved; engine 525D not reaching operating temperature.
01-12-2010, 11:35 AM
#242
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Very interesting reading. Does anybody know if the problem is fixed for later models? I have a 2008 525D and does not experience high diesel consumption. Runs below 6,5liter per 100km. Should I still be worried?
01-16-2010, 01:48 AM
#244
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I checked the temp. in slow, morning rush-hour traffic here in Oslo and it took 25 min. to reach max. temp. of 78 degrees. I must admit I have noticed that it takes longer to reach comfortable inner temperature on this car than any other BMW's I have owned (this is my 5'th and my 1'st diesel). I also talked with a friend who owns a 2007 525DT and his experience is the same. We are both heading for the BMW dealer. Has the EGR valve/termostat been the guilty component in most similar cases?
01-16-2010, 08:13 AM
#246
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My Ride: BMW E61 525DSE Auto Touring.
2004 54 plate
Metalic saffire Black,
Active Steering.
18 Inch Style 124 Alloys,
falken 452s
Beige Leather
Dark Poplar Wood Trim
xenon bulb upgrade
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Originally Posted by Steinar' post='1091785' date='Jan 16 2010, 10:48 AM
I checked the temp. in slow, morning rush-hour traffic here in Oslo and it took 25 min. to reach max. temp. of 78 degrees. I must admit I have noticed that it takes longer to reach comfortable inner temperature on this car than any other BMW's I have owned (this is my 5'th and my 1'st diesel). I also talked with a friend who owns a 2007 525DT and his experience is the same. We are both heading for the BMW dealer. Has the EGR valve/termostat been the guilty component in most similar cases?
then i got the main stat changed and it now warms up very quickly compared to before around 10 mins
and normal temps are around 92-95 so i think at least one of your thermostats has gone
02-21-2010, 03:27 AM
#248
For those of you that are having a go at changing the EGR Thermostat I have a few tips:
The vacuum hose that's in the way of the rear 10mm bolt securing the EGR Thermostat is the trickiest part of the job. There's a short length of rubber hose attached to a piece of rigid pipe. About 30cm along the rigid pipe there is a flexible joint so you can move the rigid pipe about. The connection to the vacuum pump is a single Torx screw but the joint needs to be pulled out at least 1cm to disconnect it. On my car the engine lifting bracket prevented any movement. So... the answer was to put a very large flat bladed screwdriver through the hole in the lifting bracket and apply pressure, this flexes the bracket and gives the 1-2mm clearance you need to pull the rigid + flexibible + joint up and out of the vacuum pump.
Now you can access the EGR Thermostat bolts.
The coolant loss is absolutely trivial - a few drips - but worth having a rag to hand.
Oh, and don't be tempted to pull out the quick release circlip on the thermostat. The whole thermostat comes apart......It can be put back together but is fiddly....You only need to undo the jubilee clip on the rubber hose....
The vacuum hose that's in the way of the rear 10mm bolt securing the EGR Thermostat is the trickiest part of the job. There's a short length of rubber hose attached to a piece of rigid pipe. About 30cm along the rigid pipe there is a flexible joint so you can move the rigid pipe about. The connection to the vacuum pump is a single Torx screw but the joint needs to be pulled out at least 1cm to disconnect it. On my car the engine lifting bracket prevented any movement. So... the answer was to put a very large flat bladed screwdriver through the hole in the lifting bracket and apply pressure, this flexes the bracket and gives the 1-2mm clearance you need to pull the rigid + flexibible + joint up and out of the vacuum pump.
Now you can access the EGR Thermostat bolts.
The coolant loss is absolutely trivial - a few drips - but worth having a rag to hand.
Oh, and don't be tempted to pull out the quick release circlip on the thermostat. The whole thermostat comes apart......It can be put back together but is fiddly....You only need to undo the jubilee clip on the rubber hose....
02-21-2010, 04:03 AM
#249
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My Ride: '05 525d
The vacuum hose that's in the way of the rear 10mm bolt securing the EGR Thermostat is the trickiest part of the job. There's a short length of rubber hose attached to a piece of rigid pipe. About 30cm along the rigid pipe there is a flexible joint so you can move the rigid pipe about. The connection to the vacuum pump is a single Torx screw but the joint needs to be pulled out at least 1cm to disconnect it. On my car the engine lifting bracket prevented any movement. So... the answer was to put a very large flat bladed screwdriver through the hole in the lifting bracket and apply pressure, this flexes the bracket and gives the 1-2mm clearance you need to pull the rigid + flexibible + joint up and out of the vacuum pump.
02-21-2010, 07:58 AM
#250
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