Fuel Pressure Sensor Location

Oka · Post by **Oka** » 19 Sep 2019, 21:15

Could someone tell me where the Fuel Pressure Sensor is located in 2001 V70XC?
Thanks

: Fuel Pressure Sensor.jpg (48.82 KiB) Viewed 1965 times

Oka · Post by **Oka** » 20 Sep 2019, 22:47

For all you 2001 XC70/V70XC owners, the Fuel Pressure Sensor does NOT exist.
I visited the Volvo dealer in town who later called their main Volvo place in lower 48,
and was confirmed. I also called the tech department of the VolvoUS and I was also
informed that my year does not have it and it is a mistake by them with the parts/repair
catalogs. The FPS started with some 2002 models.

Good to know.

Oka · Post by **Oka** » 22 Sep 2019, 22:03

I connected a gauge to the rail at the valve and turned the engine (since the car would not start).
Here's my reading. What would that mean, though it's above the 40psi requirement.
I am trying to troubleshoot the car not starting anymore.
Months back, it hesitates when applying more acceleration, then, it starts stalling, then it gave up.
https://flic.kr/p/2hjt9eY

Post by **abscate** » 23 Sep 2019, 05:11

I think the P2 fuel pressure spec is 50 psi.

That fluctuation is not good though, I saw the same thing when my pump electronic module or PEM went bad

106 Miles 2 Chicago · Post by **106 Miles 2 Chicago** » 13 Mar 2024, 12:21

For my 2001 V70, 2.4L 5 base model, I received the FPS ordered from IPD, then later opened the hood and where the FPS was supposed to be installed on the fuel rail, had a schrader valve for pressure relief only.
No FPS as Oka's post earlier FPS effectivity for the 2001 year are in error. I wish I read that earlier!

Post by **abscate** » 14 Mar 2024, 03:01

There was a wierd transition in the fuel delivery system between the 1998, 99,00 and the next generation chassis

Up to 2000 it was all analog pump drive, fuel pressure regulation by engine or manifold vacuum.

Then it went to fuel pump pressure driven by CEM, then CEM/PEM in the 2003,4 range

We have had many hours of live wasted by people searching for PEMs on cars that don’t have them

CEM central electronic module

PEM pump electronic module

Post by **vtl** » 14 Mar 2024, 05:22

Early P2s don't have an ECM-controlled fuel pump. It just runs at 100% duty, always delivers 400 kPa fuel pressure and dumps anything over back to tank. It is when PEM was introduced ECM started to control how quick the pump spins. Apparently these later pumps live longer lives as they don't have to work half as hard.

Post by **abscate** » 14 Mar 2024, 15:24

The pumps on the late p2 live forever. Of course, the PEM dies at 10 years/150k

Post by **erikv11** » 14 Mar 2024, 19:15

abscate wrote: ↑14 Mar 2024, 15:24 The pumps on the late p2 live forever. Of course, the PEM dies at 10 years/150k

Fuel pump on our willow green XC70 died at 180k!

Post by **abscate** » 15 Mar 2024, 04:36

But your wheel bearings live forever,