How JustAnswer Works:

  • Ask an Expert
    Experts are full of valuable knowledge and are ready to help with any question. Credentials confirmed by a Fortune 500 verification firm.
  • Get a Professional Answer
    Via email, text message, or notification as you wait on our site.
    Ask follow up questions if you need to.
  • 100% Satisfaction Guarantee
    Rate the answer you receive.

Ask Trev Your Own Question

Trev
Trev, UK Ford Car Mechanic
Category: UK Ford
Satisfied Customers: 1260
Experience:  NVQ 3, Modern Apprenticeship, MOT Tester, 15+ years experience diagnostic technician
15853224
Type Your UK Ford Question Here...
Trev is online now
A new question is answered every 9 seconds

I have a ford transit connect on a 53 plate its the tdci unit

Customer Question

I have a ford transit connect on a 53 plate its the tdci unit and the engine man light comes on and cuts the power till the van comes to a stop, if i restart and go no more than 50mph its fine, i have had the faults read from the ecu and it states the injuector fuel pressure too low. Its had the fuel rail replaced which included the pressure sensor but to no avail. Anybody have any ideas? Thanks
Submitted: 5 years ago.
Category: UK Ford
Expert:  Trev replied 5 years ago.

Hi

 

Welcome to Just Answer

 

If the van is experiencing low rail pressure, it is most likely caused by an injector with excessive leak off, this means that the injector is noy holding pressure, and returning the fuel back through the leak off system, and this lowers the rail pressure.

 

You need to start by getting a leak back test done on the injectors, this measures the ammount that each individual injector is leaking back, and indicates a faulty injector, and that injector must be replaced.

 

Most garages can do this for you, the equipment to do it yourself is quite expensive, and not really cost effective.

 

Hope this helps, if you need more help, let me know.

 

Regards

 

Trev

Customer: replied 5 years ago.

Well i had the injectors removed and tested at a specialist and they were found to be faulty, they were all replaced and the codes imputted into the cars computer, after a run the same fault is apparant.

 

Fault codes this time are P0251 and P1211.

 

The garage has had the van back and fitted a replacement fuel pressure regulator on the diesel pump and also replaced the diesel fuel filter but still the van has this fault, the van is perfectly driveable but when put under load in any gear other than 1st and 2nd the light comes on and its then game over until you turn the ignition off and back on again, i am now £1000 in and still have the same fault it seems.

 

Please help. Carl

 

 

Expert:  Trev replied 5 years ago.

Hi

 

The 2 codes together could be indicating a fault with either the ECM, or the wiring to it, as 251 rfers to - injection pump metering colntrol A, circuit malfunction (either wiring, injection pump or ECM), and code 1211 refers to - injector control pressure high or low (wiring, injector or ECM).

 

The 2 items in common are the ECM, which is where I would start looking, it may be that when the injectors were reprogrammed, it has confused the ECM, and it may need to be reprogrammed, this is quite common, and easily done, otherwise, check the wiring, and test the ECM with the diagnostics computer by performing live tests.

 

Regards

 

Trev

JustAnswer in the News:

 
 
 
Ask-a-doc Web sites: If you've got a quick question, you can try to get an answer from sites that say they have various specialists on hand to give quick answers... Justanswer.com.
JustAnswer.com...has seen a spike since October in legal questions from readers about layoffs, unemployment and severance.
Web sites like justanswer.com/legal
...leave nothing to chance.
Traffic on JustAnswer rose 14 percent...and had nearly 400,000 page views in 30 days...inquiries related to stress, high blood pressure, drinking and heart pain jumped 33 percent.
Tory Johnson, GMA Workplace Contributor, discusses work-from-home jobs, such as JustAnswer in which verified Experts answer people’s questions.
I will tell you that...the things you have to go through to be an Expert are quite rigorous.
 
 
 

What Customers are Saying:

 
 
 
  • Wonderful service, prompt, efficient, and accurate. Couldn't have asked for more. I cannot thank you enough for your help. Mary C. Freshfield, Liverpool, UK
< Last | Next >
  • Wonderful service, prompt, efficient, and accurate. Couldn't have asked for more. I cannot thank you enough for your help. Mary C. Freshfield, Liverpool, UK
  • This expert is wonderful. They truly know what they are talking about, and they actually care about you. They really helped put my nerves at ease. Thank you so much!!!! Alex Los Angeles, CA
  • Thank you for all your help. It is nice to know that this service is here for people like myself, who need answers fast and are not sure who to consult. GP Hesperia, CA
  • I couldn't be more satisfied! This is the site I will always come to when I need a second opinion. Justin Kernersville, NC
  • Just let me say that this encounter has been entirely professional and most helpful. I liked that I could ask additional questions and get answered in a very short turn around. Esther Woodstock, NY
  • Thank you so much for taking your time and knowledge to support my concerns. Not only did you answer my questions, you even took it a step further with replying with more pertinent information I needed to know. Robin Elkton, Maryland
  • He answered my question promptly and gave me accurate, detailed information. If all of your experts are half as good, you have a great thing going here. Diane Dallas, TX
 
 
 

Meet The Experts:

 
 
 
  • Trev

    UK Ford Car Mechanic

    Satisfied Customers:

    271
    NVQ 3, Modern Apprenticeship, MOT Tester, 15+ years experience diagnostic technician
< Last | Next >
  • http://ww2.justanswer.com/uploads/witt0018/2009-02-09_180738_trev2.jpg Trev's Avatar

    Trev

    UK Ford Car Mechanic

    Satisfied Customers:

    271
    NVQ 3, Modern Apprenticeship, MOT Tester, 15+ years experience diagnostic technician
  • http://ww2.justanswer.com/uploads/35/350matt/2012-6-7_182356_matsavatr.64x64.jpg Matt's Avatar

    Matt

    Engineer

    Satisfied Customers:

    1090
    BEng hons Mech engineering, in auto industry 22 years
  • http://ww2.justanswer.com/uploads/FO/fordspec/DSC00877.64x64.JPG neil's Avatar

    neil

    UK Ford Car Mechanic

    Satisfied Customers:

    316
    started as appentice electrician , now specialise in transit
  • http://ww2.justanswer.com/uploads/GazzaR1964/2009-06-03_115816_meingarden.jpg Gary Robinson's Avatar

    Gary Robinson

    UK Ford Car Mechanic

    Satisfied Customers:

    233
    25 years of working on Fords, from Cortina's to Kuga's.
  • http://ww2.justanswer.com/uploads/NA/nabilc/2011-1-24_205715_jap500.64x64.jpg Billy's Avatar

    Billy

    Trainer/Master tech.

    Satisfied Customers:

    76
    Trainer 8+ years, Master tech. 10+ years, SAE member
  • http://ww2.justanswer.com/uploads/TE/techmachine/0601821347169_717372168_8940977_39623330_o.64x64.jpg Ross's Avatar

    Ross

    Mechanic

    Satisfied Customers:

    62
    Automotive Technician
  • http://ww2.justanswer.com/uploads/vidinman/2009-12-28_54613_2_wweks_ago_and_then_this_006.jpg DR CAR's Avatar

    DR CAR

    MOSTLY FORD

    Satisfied Customers:

    44
    39 YEARS GARAGE TRADE MOSTLY DIAGNOSTIC AND FAULT FINDING
 
 
 

Related UK Ford Questions

Chat Now With A Ford Mechanic
Trev
Trev
MOT Tester/Mechanic
275 Satisfied Customers
NVQ 3, Modern Apprenticeship, MOT Tester, 15+ years experience diagnostic technician