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Author Topic: URGENT Help needed please  (Read 7896 times)

Offline SteveP

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URGENT Help needed please
« on: May 06, 2010, 11:54:12 pm »
We have a car on our ring trip running this fault: -

16471/P0087/000135 - Fuel Rail/System Pressure: Too Low

It's pulling back the power above 4000rpm at higher speed.

Any ideas??

A quick bit of logging following the guide on Ross Tech wiki shows the requested pressure isn't being meet about 4k rpm by upto 10bar.

Offline G4V VW

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Re: URGENT Help needed please
« Reply #1 on: May 07, 2010, 12:02:10 am »
Not much help but same fault code on another vehicle on another forum was HPFP faulty!!

Offline Hurdy

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Re: URGENT Help needed please
« Reply #2 on: May 07, 2010, 12:03:42 am »
Cam follower is the obvious one (and easiest to eliminate as a cause)

The more worn it is the higher the failure to reach requested rail pressure.

Stock fuel pump or HPFP? - could be the pump failing.

How is everything else? idle okay? Misfires?
Golf R gone.

Offline PDT

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Re: URGENT Help needed please
« Reply #3 on: May 07, 2010, 12:08:31 am »
Need to know the following:

Engine type
mods
post the logs up ( or email them to me at: sales@pdtuning.com)

Offline G4V VW

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Re: URGENT Help needed please
« Reply #4 on: May 07, 2010, 12:08:41 am »

Offline SteveP

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Re: URGENT Help needed please
« Reply #5 on: May 07, 2010, 12:09:41 am »
It's a normal GTI with a stock pump running with Stage 2 code.

K&N panel in standard airbox.

Will check the follower first thing  :happy2:

Offline SteveP

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Re: URGENT Help needed please
« Reply #6 on: May 07, 2010, 12:12:13 am »
Logs on the way PDT  :notworthy:

Offline PDT

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Re: URGENT Help needed please
« Reply #7 on: May 07, 2010, 12:28:09 am »
No log arrived?

Offline SteveP

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Re: URGENT Help needed please
« Reply #8 on: May 07, 2010, 12:40:35 am »
Should be now  :smiley:

Offline PDT

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Re: URGENT Help needed please
« Reply #9 on: May 07, 2010, 12:54:22 am »
Got the logs but dont show much, I have replied by email with some tips on logging and what I need to graph them correctly. Once I get them through I will check them over and send a reply to you  :happy2:

Offline SteveP

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Re: URGENT Help needed please
« Reply #10 on: May 07, 2010, 12:56:10 am »
Thanks David  :happy2:

Offline danishmkvgti

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Re: URGENT Help needed please
« Reply #11 on: May 07, 2010, 05:46:40 am »
could be the sensor sitting on the side of the hpfp, known fault and apr recommended me changing it as part of error elimination.

Over the top mod list ;o)

Offline SteveP

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Re: URGENT Help needed please
« Reply #12 on: May 07, 2010, 08:35:48 am »
A quick test with a known good working low pressure fuel sensor "appears" to have remove the fault, so a replacement is currently being collected.

Offline danishmkvgti

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Re: URGENT Help needed please
« Reply #13 on: May 07, 2010, 01:13:34 pm »
A quick test with a known good working low pressure fuel sensor "appears" to have remove the fault, so a replacement is currently being collected.

they one on the hpfp??  :smiley:

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Re: URGENT Help needed please
« Reply #14 on: May 07, 2010, 01:40:43 pm »
Interested to know the results of this mine is doing the same