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Fuel pressure at fuel rail low headache

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4.9K views 3 replies 4 participants last post by  County  
Hi all, thank you to the knowledgeable people on this forum, it has been so informative but I am now at a loss and find myself looking for help from you lovely people.

Discovery Sport 2.0d 2017 4x4
Basic Diagnostic trouble code P0087
Low pressure at fuel rail

Had an issue where the DS stalled and refused to restart for 5 minutes. Got home and it then refused to start again. RAC diagnosed in tank pump (by noise!) We changed the in tank pump as advised and it fired up no issues until a week later when idling again it stalled and would not start. Started again after 24 hours so did a few 100 miles, no problems until again when left idling for 5 minutes engine cut out and wouldn’t start. Went into indy garage and they have called saying it’s the HPFP in engine as they are getting low pressure fuel readings but not high when the problem was replicated at idle, £3k fix, it’s made me sick!! Before I spend a small fortune can anyone offer advise?

Would a fuel filter change not be a good place for the garage to start? If it is the HPFP why will it run at normal driving all day without a hiccup but die after 5minutes at idle? Any other ideas? I can’t afford to replace the pump for it to be something else in the end.

Sorry for the long thread and I appreciate any help anyone can offer.

Rural Girl
Sorry to hear this. It must be a very stressful time for you.
I have looked up the fault code in the LR workshop manual, (which you can obtain for yourself FOC here), and you can see they have provided a range of troubleshooting tips for this fault which you may want to discuss with your indy garage. One of the suggested remedies is indeed the replacement of the pump itself, so it would seem they are on the right track. But you may want to rule out any of the other possibilities first. Hope you can get this resolved to your satisfaction and please let us know how you get on.

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