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Mercedes Benz Sprinter 208 2.2 2004 - Code P1187, cuts out when warm under load - Fixed #

Posted by Richard Gill on May 7, 2014, 11:24 am

Year of Manufacture *: 2004
Engine Size and Code *: 2.2 611.987

Hello,

This is my 1st post so apologies if theres any mistakes.

Said vehicle runs and drives and starts fine untill it reaches 80c, then cuts out under load, edc light on, cycle key and restarts. fault code present is P1187.

Replaced fuel filter - Still cuts out.

Carried out injector leak off test, 2x were exessive so replaced 4x injectors - still cuts out!

Also replaced fuel control solenoid - still cuts out.
(Also tried seperate fuel tank/feed)

My computer/live data info is very limited (codes only)

Praying to the heavens above you can help me out with this one as im in deep with the cost on injectors!!!!!

Thanks in advance
Richard

Re: Merc sprinter 208 cdi - P1187, cuts out when warm/under load

Posted by aidan birley <iframe src='https://members.boardhost.com/ukautotalk8/info/user=UKAT2879' width='330' height='300' border=0 style='border:none;'> on May 7, 2014, 1:54 pm, in reply to "Merc sprinter 208 cdi - P1187, cuts out when warm/under load"
Aidan Birley

Hi

what scanner are you using, what description does it give.

I would expect Star would give a sub code and a good scanner give this or a specific description.

Aidan

Re: Merc sprinter 208 cdi - P1187, cuts out when warm/under load

Posted by Piotr Sokolowski <iframe src='https://members.boardhost.com/ukautotalk8/info/user=UKAT1848' width='330' height='300' border=0 style='border:none;'> on May 7, 2014, 8:29 pm, in reply to "Merc sprinter 208 cdi - P1187, cuts out when warm/under load"

on the chassis leg - check the wiring

Link: http://www.pandpauto.co.uk

Re: Merc sprinter 208 cdi - P1187, cuts out when warm/under load

Posted by Alan Lange <iframe src='https://members.boardhost.com/ukautotalk8/info/user=ukat3293' width='330' height='300' border=0 style='border:none;'> on May 7, 2014, 9:13 pm, in reply to "Re: Merc sprinter 208 cdi - P1187, cuts out when warm/under load"
Alan Lange

Also, If its like the 2.2 vito check the green rubber "O" rings on the pressure regulator on the end of the fuel rail. (Found a few of these split).

Re: Merc sprinter 208 cdi - P1187, cuts out when warm/under load

Posted by Mark Carter <iframe src='https://members.boardhost.com/ukautotalk8/info/user=UKAT1428' width='330' height='300' border=0 style='border:none;'> on May 7, 2014, 9:56 pm, in reply to "Re: Merc sprinter 208 cdi - P1187, cuts out when warm/under load"
Mark Carter

A scanner that gives you data will help you a lot.

Where abouts in the country are you?

Modern cars, Its all wizardry and witchcraft

Re: Merc sprinter 208 cdi - P1187, cuts out when warm/under load

Posted by Richard Gill <iframe src='https://members.boardhost.com/ukautotalk8/info/user=ukat3508' width='330' height='300' border=0 style='border:none;'> on May 8, 2014, 8:47 am, in reply to "Re: Merc sprinter 208 cdi - P1187, cuts out when warm/under load"
Richard Gill

Thanks for your input guys,

having a good scanner would definatly help!! im in north yorkshire.

i have checked the wiring loom on chassis leg - ok.

i have replaced fuel pressure reg - ok.

under further investigation i have found air in the fuel line, under high revs, between the filter and the low pressure pump? cant find how this is getting there and not sure if this is the fault??
(I have also replaced the black valve on filter and pipe from filter to pump)

the strange thing is the van runs perfect from cold, as soon as it reaches 80c it cuts out under load! cant understand why the temp plays a part? if it was an air problem surely the fault would happen all the time??

Can anyone tell me what the readings should be on the low pressure sensor??

All input is greatly recieved.

Thanks
Richard

Re: Merc sprinter 208 cdi - P1187, cuts out when warm/under load

Posted by Kev Gundry <iframe src='https://members.boardhost.com/ukautotalk8/info/user=UKAT5245' width='330' height='300' border=0 style='border:none;'> on May 8, 2014, 10:50 am, in reply to "Re: Merc sprinter 208 cdi - P1187, cuts out when warm/under load"

Hi Richard, Start at the fuel tank. does it have the original cap or a temperory one fitted? i have had this where they are refueled lose the cap and a wad of paper towel is found in the tank.

2 on top of the fuel filter there is a black plastic thermo valve which opens when the fuel is at operating temperature these are never replaced and leak air around the seal fit a genuine filter and valve just a cheap from Mercedes as pattern part rubbish

Both fo those faults will cause your code

Also as mentioned check the rail control valve seals
the Low pressure side should run at 2,5 to 4 bar
a normal one runs at 2.8 bar at idle

If you have changed the injectors

and the Rail control valve seals

i would concentrate on the fuel supply from the tank then you should find your problem

Oh and a chassis number would be good so i know i am giving you the right info

HTH

Kev Gundry

email me if you want a chat

kevin@acrobat-rental.co.uk

Link: www.acrobat-rental.co.uk

Re: Merc sprinter 208 cdi - P1187, cuts out when warm/under load

Posted by Mark Carter <iframe src='https://members.boardhost.com/ukautotalk8/info/user=UKAT1428' width='330' height='300' border=0 style='border:none;'> on May 8, 2014, 3:59 pm, in reply to "Re: Merc sprinter 208 cdi - P1187, cuts out when warm/under load"
Mark Carter

I'm with Kev, plus run the vehicle off your own supply ( after/before the filter) just to prove if your "air bubbles" are your issue.

Mark

Modern cars, Its all wizardry and witchcraft

Fixed #

Posted by richard gill on July 14, 2014, 2:35 pm, in reply to "Re: Merc sprinter 208 cdi - P1187, cuts out when warm/under load"
Edited by board administrator July 16, 2014, 8:46 am

(sorry ive taken so long to come back)

Turned out to be high pressure fuel pump!!
Pressure tests on pump were fine with the vehicle standing, but on road test the fuel control soleniod was working to over 80%!! upon removal and inspection of HP pump i found the bolts for one of the piston caps were loose! thus allowing pressure to escape internally (sent to a diesel specialist for test/insp)which was only apparent when the vehicle was running(shaking)

Thanks again for all your input.

Richard.

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