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Mondeo P0251 Injection Pump A - Circuit Malfunction (Cam/rotor/injector)


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#1 AndrewGallon

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Posted 05 December 2013 - 08:06 PM

HI Guys,

ford mondeo tdci 130 zetec s. 120,000 miles.

 

Car keeps cutting out alot just after glow plug light comes on could be a few seconds after setting off or a couple of minutes. totally random but happens more when foot is down and when at higher speeds 50-60. don't go any faster lol. also in limp but not always

 

it wont start off the key when cold it has to be bumped off.

 

Also it dont smoke or anything like that

 

when its warm it will start off the key but the longer you leave it the harder it gets to start.

 

Had an OBD reader on it and it come up with P0251 INJECTION PUMP A - CIRCUIT MALFUNCTION (cam/rotor/injector)

 

 

P1000 undefined code

P1000

 

I have put a grey cam sensor in mine was black..  i have a new fuel filter i am going to put in tomorrow doubt itll fix it but wont do any harm in trying. 

Any experience with these codes??? Any help would be great..Cheers Guys i only bought it 4 days ago and the guy failed to mention these issues apart from he said it wouldn't start off the key. i thought him being a fireman might of been honest never mind eh..mondeo.JPG



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#2 mick85

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Posted 05 December 2013 - 08:27 PM

First thing u need check wiring but sounds like a PCM problem but it also could be pump but start by testing wiring from PCM to injection pump

#3 wase16ll

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Posted 05 December 2013 - 08:36 PM

got to be worth trying a set of glow plugs, or at least test the ones you have

 

ignore the p1000...its a minor code that often appears...something to do with incomplete obd test....doesnt affect engine/running



#4 AndrewGallon

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Posted 05 December 2013 - 08:39 PM

Hi Mick, Thanks for your reply. Please pardon my ignorance but what is a pcm. Is this an easy fix? 

 

It is absolutely doing my head in :(

 

Cheers



#5 AndrewGallon

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Posted 05 December 2013 - 08:48 PM

Cheers wase would faulty glow plugs make it cut out and give that code. I dont rule out thats maybe why its not a good starter :)



#6 mick85

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Posted 05 December 2013 - 08:53 PM

PCM is brain of the car it's ecu ford just call it that but same thing if u don't get anywhere wit the glow plugs let me know if Ur pump is Bosch or Delphi system an I try help u out with were to go next

#7 AndrewGallon

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Posted 05 December 2013 - 09:24 PM

right well i think my next 3 steps are changing fuel filter, checking the wiring and glow plugs.I heard something tonight about some wires that may of corroded as such from the cam sensor.. Is this right ??

 

How much is ECU reprogramming ''roughly'' same as a remap??



#8 mick85

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Posted 05 December 2013 - 09:38 PM

It could easily be down to wires shorting out each other but to be honest there so many possibilities an this just guess work u need to start wit basics an work ur way through has ur car been remapped before any service history a remap is different to an upgrade when u go to ford main dealer with a drivability concern they check for a later calibration to rectify certain concerns they do remap it but when most people say wanna get it remapped to get more power they go to a specialist were they remap to get more power not to fix drivability concern

#9 AndrewGallon

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Posted 05 December 2013 - 09:59 PM

It has a full service history half main dealer, I dont no if it has had a remap or not the guy i bought it off said his brother serviced the car and then it wouldnt start off the key would only bump start but he didnt say it was cutting out or anything to me. just strung me a line one thinks lol.



#10 mintalkin

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Posted 05 December 2013 - 10:18 PM

one of the common causes of P0251 is an injector returning too much fuel, the best thing you can do is get an injector leak off test done, this will confirm if one of the injectors is playing up.



#11 mick85

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Posted 05 December 2013 - 10:25 PM

Right tel me ur year an wat make diesel injection pump is your car is giving u a fault that injection pump fuel metering control circuit malfunction this mean ur problem lies with this circuit so could be an internal fault in ur ecu the wiring bad or ur pump knackered hopefully it's the wiring cause pump an ecu both over a thousand quid could u not throw car back at this chancer that p1000 means someone tried delete faults so he new there was this problem an was off loading it on someone else

#12 AndrewGallon

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Posted 05 December 2013 - 10:42 PM

 how much does that cost roughly, is there much work involved with that  @ mintalkin

Thanks for all  replies guys getting some good info feeling as if there is hope lol.

 

 

 

#13 AndrewGallon

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Posted 05 December 2013 - 10:59 PM

Registered year 2004 on a 53 plate and im sure i seen delphi parts on the car on things ive seen i can check tomorrow to be certain, where is the pumps location? part i seen with delphi wrote on it was at the front to the left of the starter motor. cheers for your reply.



#14 mick85

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Posted 05 December 2013 - 11:17 PM

Yeah the pump is at front engine runs off timing chain let me know tomorrow there a lot of helpful people on this who know there stuff I sure u will eventually figure it out u will definitely need a multimeter but to carry out most tests on wiring

#15 wase16ll

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Posted 05 December 2013 - 11:19 PM

there are many common faults on the tdci that can lead to a p0251 code

 

pump...very common..very.expensive if pump has sent filings around the fuel system as the lot will need cleaning/flushing...when you remove the old filter and cut it open, look for metal filings, if you find some be nice to your bank manager

 

filter...blocked

 

fuel pressure sensor or wiring/connection

 

fuel pump sensor or wiring/connection

 

injector/s...carry out a leak off test, will give an idea if faulty

 

injector recoding

 

glow plugs....worth testing as have seen something as simple as this set funny, totally unrelated codes/running issues but at minimum, may help with starting problem



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