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  #11  
Old 07-04-2020, 12:56 PM
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Quote:
Originally Posted by newfort View Post
Hi david2047,

Sorry, don't have insight into the pressure convertor and the noise you are experiencing.

Before you begin to tinker with the EGR valve and/or cooler, I would invest in a scanner (if you don't already have one). I personally use Foxwell NT530 and it has been good so far. This way you can check for any codes to diagnose the actual issue. For all you know the EGR could be perfectly fine and the problem might be somewhere else.

A lot of folks also use ISTA software to diagnose and run specific tests.
Hey mate
Do you think this product is useful for scanner code?
https://obd2australia.com.au/product...4aArATEALw_wcB
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  #12  
Old 07-06-2020, 10:11 AM
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Hey guys,
I found another problem yesterday
The car use a lot of fuel when it is idling or waiting for traffic light,
basically the fuel consumption decrease 0.1L every 5 second when it's not driving,

but when it's driving the fuel consumption is fine, around 10-11L/100km
Does anyone know what is going on?
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  #13  
Old 07-06-2020, 11:26 AM
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Quote:
Originally Posted by david2047 View Post
Hey guys,
I found another problem yesterday
The car use a lot of fuel when it is idling or waiting for traffic light,
basically the fuel consumption decrease 0.1L every 5 second when it's not driving,

but when it's driving the fuel consumption is fine, around 10-11L/100km
Does anyone know what is going on?
If you have quite recently reset the consumption calculation the consumption when vehicle isn't moving changes the figure quite drastically. That is normal and does not indicate the engine is consuming fuel more than normal on idle.
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  #14  
Old 07-06-2020, 12:03 PM
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Quote:
Originally Posted by Clavurion View Post
If you have quite recently reset the consumption calculation the consumption when vehicle isn't moving changes the figure quite drastically. That is normal and does not indicate the engine is consuming fuel more than normal on idle.
Gotcha
I did reset the fuel consumption
Cheers mate
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  #15  
Old 07-13-2020, 08:18 AM
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Originally Posted by Clavurion View Post
Glow plugs won't change the consumption. That "duck noise" is typical for a failed EGR vacuum solenoid like you already figured out. If you don't have diagnostics check the engine coolant temp on cluster hidden menu. It should be near 90 C. Low running temps can make consumption worse and eventually causes problems with DPF.

Hi Clavurion,
A little update, with a 15 mins drive, 60% highway and 40% city, the engine coolant temp keep at around 56 C.
I reckon I should replace the thermostat.
Thanks for the information.
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  #16  
Old 07-13-2020, 02:10 PM
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Quote:
Originally Posted by david2047 View Post
Hi Clavurion,
A little update, with a 15 mins drive, 60% highway and 40% city, the engine coolant temp keep at around 56 C.
I reckon I should replace the thermostat.
Thanks for the information.
There are three possible causes. Main thermostat, EGR thermostat or auto gearbox heat exchanger. EGR thermostat is easy to replace even without loosing coolant. Gearbox heat exchanger you can rule out by compressing the coolant line from radiator to heat exchanger (Nr.11).
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  #17  
Old 07-13-2020, 08:15 PM
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Quote:
Originally Posted by Clavurion View Post
There are three possible causes. Main thermostat, EGR thermostat or auto gearbox heat exchanger. EGR thermostat is easy to replace even without loosing coolant. Gearbox heat exchanger you can rule out by compressing the coolant line from radiator to heat exchanger (Nr.11).
Cheers
Can I double check the auto gearbox heat exchanger with you?
is it the first one in this link?
https://www.realoem.com/bmw/enUS/sho...diagId=17_0399
17217553389
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  #18  
Old 07-14-2020, 06:55 AM
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Quote:
Originally Posted by david2047 View Post
Cheers
Can I double check the auto gearbox heat exchanger with you?
is it the first one in this link?
https://www.realoem.com/bmw/enUS/sho...diagId=17_0399
17217553389
Yes. These have a separate thermostat (Nr.4 in the diagram) so there is no need to renew the heat exchanger but just that thermostat if needed.
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