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Old 05-19-2020, 12:52 PM
Join Date: Jan 2013
Location: Finland
Posts: 403
Clavurion is on a distinguished road
This is starting the get interesting. So did you actually renew those connector pins on the pressure sensor? Have you now tried removing the sensor plug when it's refusing to start?

In basic those fuel pressure figures look just fine and it's normal that rail pressure drops quite quickly after turning off. But is it always showing that 276,36 bar rail pressure when refusing to start and what does it then show with ignition pos.2 before cranking?
E39 530dA -02 M-Sport Messing metallic
E53 X5 3.0dA -06 Sport Stratus grey
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Old 05-19-2020, 01:46 PM
Join Date: Mar 2020
Location: UK
Posts: 20
rbjtech is on a distinguished road
Hi Clavurion - thanks for the replies again

So if I remove the HP pressure sensor plug, it still does not start.

On the ignition only position - the value (when connected) reads as 0.

First value is the Pre-supply LP Bar, 2nd the HP Rail Pressure Bar during a hot start attempt.

9["3.80","0.00","440.12","1378.62","35.00","0.00","2 4.52"]
:["3.80","20.47","440.12","1303.70","35.00","1.47"," 23.11"]
:["3.62","286.59","440.12","764.24","25.00","1.41"," 23.11"]
:["3.62","286.59","440.12","759.24","25.00","1.41"," 23.11"]
:["3.62","286.59","440.12","759.24","25.00","1.62"," 26.79"]
:["3.62","286.59","481.06","754.25","25.00","3.35"," 35.88"]
:["3.61","286.59","491.30","759.24","25.00","3.90"," 46.85"]
:["3.61","286.59","501.54","754.25","25.00","3.92"," 56.08"]
:["3.62","276.36","440.12","754.25","25.00","1.41"," 23.12"]
:["3.79","255.89","440.12","964.04","35.00","1.41"," 23.12"]
;["3.80","143.30","440.12","1388.61","35.00","1.41", "24.53"]
9["3.80","81.88","460.59","1378.62","35.00","0.00"," 0.00"]
9["3.80","51.18","286.59","1378.62","35.00","0.00"," 0.00"]
9["3.80","30.71","286.59","1378.62","35.00","0.00"," 0.00"]
9["3.80","20.47","286.59","1378.62","35.00","0.00"," 0.00"]
9["3.80","10.24","286.59","1378.62","35.00","0.00"," 0.00"]
9["3.80","10.24","286.59","1378.62","35.00","0.00"," 0.00"]
9["3.80","10.24","286.59","1378.62","35.00","0.00"," 0.00"]
9["3.80","10.24","286.59","1378.62","35.00","0.00"," 0.00"]
8["3.80","0.00","286.59","1378.62","35.00","0.00","0 .00"]

On the Pins - It's a brand new pressure sensor so they should be ok, on the connector pins I did not renew, but my logic says that as I was getting the reference voltage and constant readings from the sensor, it is likely not the pressure sensor nor the connector that is causing the problems ?. I'm totally happy to cut off the connector and solder to the sensor pins directly if this resolves it ?..
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