HELP OR THE VOLVO GETS IT LOL

I have a Volvo XC 90 2010 manual

The codes that are present are as follows :

2520 , 2530 , 2590 , 25A0 which all indicate low fuel pressure I have replaced the fuel filter twice in three months. I have replaced the maf sensor as that was also a code cannot remember what that one was previously have replaced the fuel pressure regulator with a new Bosch one in the high-pressure diesel pump none of these has helped so the problem is as follows : so when these codes are present, the amount of power that you get from the engine seems to change with every time you start the vehicle, you can park the vehicle up and it was running reasonably well and the next time you start the engine it does not produce any power and does not want to rev over 2000 rpm however, if you dip the clutch and throttle, it will rev out, not necessarily into the redline, but at least 4 to 4.500 rpm and when you let the clutch back out, it dies straight back down to proximately 2000 revs but you can clear the codes and it will drive fine for one to 10 miles. Depends how much of an idiot it wants to be on the day at my wits end with it to the point of need someone to take it away from me before I beat it severely LOL, please help

Given what you’ve changed, and knowing absolutely nothing about them except that they have a Volvo badge on the back and somewhere between 3 & 5 wheels … is there a way to ascertain whether the pump is the problem (assuming they’re expensive or you’d already have tried that)?

The diesel models can burn out the power supply wire for the in tank lift pump. Fairly common especially when regularly run low on fuel

    timbo

    Brilliant Tim!

    I knew that they did fail but never knew it was this.

    Could you fix the wire and the pump still good?

      Hey first thing thanks for your time in replying !

      Hi Timbo the real head fcuk I have with it is that as soon as you clear the codes then it drives like a new one for 1 - 10 miles so I am struggling to think it could be a wire or the pump itself as it as you can’t reset something that is physically wrong with it or am I as my son says thinking to practical for modern day vehicles . give me an old fashioned lift Pump filter and injector pump without all the needless sensors any day !

      Once again thanks any help is appreciated

        And I always fill tank with diesel to the brim then use it down to low tank and refill

        Regarding it driving normally for the first 10 miles (and you’re prolly not pushing it during that time), modern management systems do wonders when some disaster is afoot. I know that doesn’t help … hope you do find it, ish like this bothers the living poop out of me, it’s something super-duper minor stopping a vehicle from having a solid 20-30 year’s worth of good solid comfy non-resource-wasting life in it.

          Forg

          It really doesn’t matter how you drive it or treat it it’s just has a mind of it’s own wish I could just bypass all the sensors and turn it back to an 80s lift , filter and inject and bang n go diesel I’ve started old diggers n tractors that’s been in a hedge for 25 years but modern stuff will always be modern ecu and sensors will be the end of the classic car !

            Pissedofvolvoowner so I am struggling to think it could be a wire or the pump itself

            It might take 10 minutes for the pump &/or its power feed wire to get hot. Then the wire's electrical resistance will increase. Then the ECU will see pump overcurrent &/or lack of pressure due to lower supply voltage and set a code...

            ...well, that's my guess.

            With the unfortunate absence of Mister Bear, Timbo is the only one around here presently who understands these 21st century whiteblocked gadgets. (I sure as flock don't - our 2010 S80 V8 has 57 different goddamned modules, so I don't touch it). If he's suggested this as a problem area, it's worth checking out.

              Ok thanks that makes sense I think I’ll just put a new pump in and keep my fingers crossed!

              The thing I don’t understand is I go out there today and start it without clearing the codes and it could be fine ! It’s just the Volvo lottery with a very slim chance of winning 🥇 lol

              Non Volvo no diesel specific comment.. sometimes multiple recurring codes can be symptomatic of ECU type issues

              Ok thank you have the pump out of the pump at the moment and see how that goes ! Fingers crossed 🤞

              6 days later

              Unfortunately it wasn’t the fuel pump in the tank brand new one fitted and no difference so I guess pressure rail sensor next then I’m without a clue …….. any idea folks ?

              I thought you already did the FP sensor. That’s the common failure.

              Done the one on the fuel pump now thinking the rail sensor on the end of the common rail

              4 days later

              What’s the bets on the pressure rail sensor being the problem please reply with your odds on a 1-10 basis 0 being not a hope in hell or 10 being problem solved!

              10

              It’s the common fault

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