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Thread: Fuel Pressure Regulator

  1. #1
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    Default Fuel Pressure Regulator

    Ive had two unsuccessful fault finding trips to the garage, my car was going into limp mode with fault. But garage were unable to identify any fault when the looked at it!
    On route home from garage the 2nd time, the car faulted, and limped. I about turned to the garage in limp mode before the fault was able to clear its self on the subsequent turn of the ignition! I basically stormed in and demanded a mechanic come out to the car, he came armed with his tech2, and identified a Fuel Pressure Regulator fault. 2 days worth of work he says.
    Does this have any impact on the fuel pump, i.e. will they replace that too? Or indeed does it indicate that the fuel pump is about to go?
    Anyway advice would be appreciated.

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    Hi what's the exact code and msg/interpretation?

    What engine / model / year?

    There are a couple of 'pressure regulators': rail pressure control valve, suction control valve, fuel metering solenoid. Maybe with a bit more info, I could find what part is causing the issue on TIS 2000. Solving the problem may be another matter!

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    Full Member spennny's Avatar
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    He has a 3.2 v6 diesel

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    Quote Originally Posted by spennny View Post
    He has a 3.2 v6 diesel

    Confused??? Y30DT and Z30DT were the only ones I knew about and both were 3.0L. Still, if it's either of these, need more info

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    Hi I have the 3L CDTI SRI V6, 57 plate. All the guy told me was that it was the FUEL pressure regulator, sorry i cant give more info. Im just really conrernced that the fuel pump is on its way out too after reading the article on the bbc news.... now i know its a 2.2 petrol they refer too, still worrys be though!

    http://www.bbc.co.uk/blogs/watchdog/...ddenly_lo.html

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    OK, should have checked your profile!

    There was a problem with some cars: blocked / failed suction control valves. It took years to do something about this and changes were implemented after engine number 69692 (01.09.2006). The SCVs are located on the fuel pump. There are other fuel pressure controlling valves!

    This is only my opinion, so take it with a pinch of salt if you like...

    Ask exactly what code was thrown. Ask exactly what the error message was. Ask exactly which 'fuel pressure regulator' they think has failed. Ask them for the evidence of drawing this conclusion. Ask them if they have worked on this engine before. If you're not sure, walk away and find someone else. These are complicated engines and codes can be thrown that 'look like' a certain fault but can be something totally different.

    The code should be in the form "PXXX rail leak or rail pressure control valve malfunction" or something similar. If the garage can't tell you this information, they are either trying to pull the wool, or don't really know (again, IMHO). Shelling out for two days work will cost you dearly and you want to make sure you NEED to have that job done and that it WILL cure the fault.

    Do you have a local diesel injection specialist?

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    Thanks for the response. The garage is Evan halshaws. And it wont be costing me anything as it still under warranty thank god! But not for much longer!

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    Give it a good thrashing after getting it back to make sure it's OK over all of the rev range.

    Maybe they were just 'dumbing down' the diagnosis, rather then being a BS artist. I'm just a bit suspicious of garages and only take mine to one place who I know doesn't talk out of their backside, rip me off, etc.

    Warranty? Dealership? Cough... COURTESY CAR!

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    Will do.

    It was my partner who took the car, i was at work. The guy phyiscally showed her the Tech2 device in his hand with the fault displayed.

    i pressume I shouldnt be too concerned about the fuel pump then?

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    I don't think that a failed valve should mean the pump's about to die - there were problems with the SCVs and I get the impression that people who have chipped / mapped the V6 have had problems.

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