problem solved; engine 525D not reaching operating temperature.
#291
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My Ride: 2006 520d - 19" 172s- Remapped - LCI taillights V6 cables - LCI xenon headlights - Denison 500 with BTA1500 - led interior lights - OEM led number plate lights
Planned mods:
Folding mirrors - Modmynav kit - High gloss shadowline trim -
So got my car back and on a 5 mile trip home the car easily hit 90 degrees and didn't go below 89 or above 91. Very pleased to say the least. I'll be doing a test like above tomorrow morning and will post results as soon as I can:
The thermostat was broken and it was only luck that a saw a different service advisor than the one who fobbed me off. I felt going over to the idiot and saying I told you so and you don't know shit but I didn't because I want to keep relations good with my local dealer. If anything this has helped me became a familiar face in the dealership and I am sure I'll get treated better from now on (especially as they think I know what I am talking about).
Just for reference my car is a 2006 520d - the technican's response to this thread when he wouldnt accept there was a problem was that my car was not the same engine as other cars in this thread.
The thermostat was broken and it was only luck that a saw a different service advisor than the one who fobbed me off. I felt going over to the idiot and saying I told you so and you don't know shit but I didn't because I want to keep relations good with my local dealer. If anything this has helped me became a familiar face in the dealership and I am sure I'll get treated better from now on (especially as they think I know what I am talking about).
Just for reference my car is a 2006 520d - the technican's response to this thread when he wouldnt accept there was a problem was that my car was not the same engine as other cars in this thread.
#292
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Hi Jas.
Great results posted there.
I'm presuming your car is under warranty the way you seem to refer?
If not what was the final bill?
I just changed my EGR thermostat and the car runs around 85c like yours.
I'm not too worried and will keep an eye on any deterioration. For info, my 2 year old works 530d and DMS's 535d both run at 86C.
Just odd they should both run at that temp.
Neil.D
Great results posted there.
I'm presuming your car is under warranty the way you seem to refer?
If not what was the final bill?
I just changed my EGR thermostat and the car runs around 85c like yours.
I'm not too worried and will keep an eye on any deterioration. For info, my 2 year old works 530d and DMS's 535d both run at 86C.
Just odd they should both run at that temp.
Neil.D
#293
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My Ride: 2006 520d - 19" 172s- Remapped - LCI taillights V6 cables - LCI xenon headlights - Denison 500 with BTA1500 - led interior lights - OEM led number plate lights
Planned mods:
Folding mirrors - Modmynav kit - High gloss shadowline trim -
I have BMW insured warranty with a £250 excess.
The main stat was changed as a goodwill because I raised the issue whilst under the three year warranty and I had a good service advisor.
I did check with RA Engineering in Reading and he reckons the main stay would be an hour to two hours labour (£58 + vat per hour) plus parts (which should be about £50 all in)
The main stat was changed as a goodwill because I raised the issue whilst under the three year warranty and I had a good service advisor.
I did check with RA Engineering in Reading and he reckons the main stay would be an hour to two hours labour (£58 + vat per hour) plus parts (which should be about £50 all in)
#294
The EGR stat is the same on almost all BMW diesel engines, I bet the main stat is pretty common too. That means the fault will be across almost all BMW diesels.....
What I have noticed is that these thermostats do age. They start at 92C then slowly creep down after a year or so. I suspect you're OK down to about 85C then you really ought to change it.
And it's the main stat that is usually the biggest culprit, the EGR stat can be the cause but generally isn't the main problem.
What I have noticed is that these thermostats do age. They start at 92C then slowly creep down after a year or so. I suspect you're OK down to about 85C then you really ought to change it.
And it's the main stat that is usually the biggest culprit, the EGR stat can be the cause but generally isn't the main problem.
#296
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My Ride: 2007 E61 M5, 1989 Z1
Main stat now replaced as well and the car gets to 90 and stays there at a minimum. Interesting to watch the temp climb to 95 going up a long hill and then drop back to 90 on the level or downhill.
#297
Just read everything ! Purchased a 2005 m sport auto E61 6 weeks ago. Getting 20mpg avg not impressed even less when doing A & B roads.
Accessed the coolant temperature menu highest it ever got to was 79c. Printed this thread out and handed to the car dealer. They are now going to look at the car. At first they said 20mpg was about right !!! Just trying to fob me off I think. Will keep you all updated. I think changing both stats is the way to be sure after reading all of this. Anyone on here have same or near similar car pre LCI with MPG results before and after.
Accessed the coolant temperature menu highest it ever got to was 79c. Printed this thread out and handed to the car dealer. They are now going to look at the car. At first they said 20mpg was about right !!! Just trying to fob me off I think. Will keep you all updated. I think changing both stats is the way to be sure after reading all of this. Anyone on here have same or near similar car pre LCI with MPG results before and after.
#299
I am a bit perplexed:
My car (2004 530d E61) ran around at 65-75 degrees on B-roads in cold weather. I also recorded several times how quickly it warms up in the morning, along the same city route.
I changed my EGR thermostat, but there is almost no improvement. The car ran at 75 degrees in city night traffic yesterday (ambient around 8-9 C, and the warm-up after start was only a little bit better.
My old EGR thermostat could also not be blown through, so I suspect it might not have been broken at all!
Is it possible that only the main thermostat is responsible for such a low operating temp of 75 degrees?
I just hope that a main therm replacement will cure it as I will have problems regenerating my DPF outside city driving, which is pretty cr**py.. :thumbsdown:
My car (2004 530d E61) ran around at 65-75 degrees on B-roads in cold weather. I also recorded several times how quickly it warms up in the morning, along the same city route.
I changed my EGR thermostat, but there is almost no improvement. The car ran at 75 degrees in city night traffic yesterday (ambient around 8-9 C, and the warm-up after start was only a little bit better.
My old EGR thermostat could also not be blown through, so I suspect it might not have been broken at all!
Is it possible that only the main thermostat is responsible for such a low operating temp of 75 degrees?
I just hope that a main therm replacement will cure it as I will have problems regenerating my DPF outside city driving, which is pretty cr**py.. :thumbsdown:
Lately the outside temperatures have been below zero and my milage is getting worse so i hope the main thermostat will fix that. And i have a Check engine light on with a "EGR increased emissions" fault which i hope will be resolved.
#300
My car runs at mid to upper 70's when on load at speed but drops back to low 70's when off load and even upper 60's if moving a bit slower. It'll get to low/mid 80's if stationary in traffic (this I assume to be the radiator fan switch setting) but despite the stat being marked 88 degrees, can I convince my local dealer that there's something not right with it? No luck so far despite pointing them in the direction of this thread in which there are so many owners of different models of E60 / E61 diesel with exactly the same symptoms being cured by replacement of one or both thermostats.
In fact when you dig a little deeper on other forums, you find owners of other BMW models complaining about the same thing. Both thermostats are the same part number for every diesel engine (I've only checked Pre LCI) in the 5 series range so I'd wager that they're also the same components for other 1/3/7 series engines.
So, any recommendations on how to get this part changed under a BMW AUC warranty when the dealer doesn't seem to recognise the fault? When was fault diagnosis reduced to "the lap top says no, ergo nothing's wrong" anyway?
Two attachments show my running temp against another owners with a new stat fitted, it's cut and dried if you ask me!