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Discussion Starter #1
Screenshot_20180402-170118.jpg

hi guys i keep getting this code flag up & i was wandering if this has anything to do with the "juddering".
Any advice of what to check/ clean would be appreciated.
 

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Discussion Starter #2
i have read across the internet that it could be a number of causes, e.g
fuel filter-but don't think its that old.
fuel pressure regulator blocked?
but the error also says it goes with a faulty auto box, code AL4 but mine is a 6 speed manual??
 

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If filter is OK i would check fuel pressure regulator on rear of HP pump the o-ring disintegrates and jams the valve
 

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Discussion Starter #5
sorry forgot to add that ive replaced the fuel filter & it still judders.
ive been told that egr valve could cause this type of problems but it was replaced by previous owner not that long ago.
 

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Discussion Starter #6
does anyone know how to test the valve to see if it functions correctly once ive got it off the pump?
thanks in advance.:thumb:
 

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The valve is on the back of the hp pump there is also a valve on top of pump but this is for third piston deactivate.

You can you planet to cycle the valve in actuator test which should cause it to move in and out

Sent from my SM-G935F using Tapatalk
 
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