Low fuel pressure

GW4489 · May 9th, 2021, 22:37

Anyone have a clue. Low fuel pressure. Limp mode most of the time. New pressure sensor new fuel filter new tank sender fitted. Still goes into limp mode.
Ideas please.

gmonag · May 9th, 2021, 23:09

How do you know it was low fuel pressure? Did you read DTCs?

reggit · May 10th, 2021, 19:37

Which engine and how many miles has it done?

If euro 3 I’d start suspecting the in tank pump. Does diesel pour out if you take filter off (or remove the drain bolt if it’s the metal one) and turn ignition on?

GW4489 · May 10th, 2021, 21:12

Diag check came back with low fuel pressure. changed fuel sensor + pump in tank + fuel filter. Still no joy. Volvo is an XC90 2.4 diesel 55 plate with 77,000 on the clock.

Kev0607 · May 11th, 2021, 00:12

Quote:

Originally Posted by GW4489

Diag check came back with low fuel pressure. changed fuel sensor + pump in tank + fuel filter. Still no joy. Volvo is an XC90 2.4 diesel 55 plate with 77,000 on the clock.

You've changed the fuel sensor... Do you mean the fuel pressure sensor on the end of the rail?

What about the regulator, near the high pressure pump?

Have you done an injector leak off test? You might have bad injector(s).

Are you using VIDA, or just a generic scan tool? Posting the fault codes may help.

May 9th, 2021, 22:37	#1
GW4489 New Member Last Online: May 10th, 2021 21:37 Join Date: May 2021 Location: Newcastle-under-Lyme	Low fuel pressure Anyone have a clue. Low fuel pressure. Limp mode most of the time. New pressure sensor new fuel filter new tank sender fitted. Still goes into limp mode. Ideas please.

May 9th, 2021, 23:09	#2
gmonag Premier Member Last Online: Jan 15th, 2024 17:24 Join Date: Jun 2010 Location: Bury St Edmunds	How do you know it was low fuel pressure? Did you read DTCs? __________________ Greg

May 10th, 2021, 19:37	#3
reggit Premier Member Last Online: Apr 17th, 2024 20:01 Join Date: Feb 2012 Location: Preston	Which engine and how many miles has it done? If euro 3 I’d start suspecting the in tank pump. Does diesel pour out if you take filter off (or remove the drain bolt if it’s the metal one) and turn ignition on? __________________ 2009 Volvo V70 D5 (Polestar 225bhp) r-design 180,000 miles

May 10th, 2021, 21:12	#4
GW4489 New Member Last Online: May 10th, 2021 21:37 Join Date: May 2021 Location: Newcastle-under-Lyme	Diag check came back with low fuel pressure. changed fuel sensor + pump in tank + fuel filter. Still no joy. Volvo is an XC90 2.4 diesel 55 plate with 77,000 on the clock.

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