2001 V70 2.4T Long crank after sitting, fuel odor, underside of fuel tank damp Topic is solved

[prwood]

A few more updates and observations:

- When I ordered the fuel pump from FCP, their website said that the fuel screen was included; however, when the part arrived, Bosch's packaging said that it was not included, but must be installed or the factory warranty was void. As I understand it, the screen is supposed to be the first line of defense to protect the pump from failure should crud get into the tank, since the pump is before the fuel filter. I went ahead and installed the pump anyway, considering that FCP has their own lifetime guarantee and would replace the pump if it failed. I also contacted FCP and they said that the pumps had at one point included the screen, but this may have changed since they made the note on their website, and so they're going to send one out to me at no charge. I feel comfortable enough with the procedure at this point that it shouldn't be a big deal to get in there and put it on.

FCP Website

Screen Shot 2019-02-26 at 9.05.10 AM.png (36.81 KiB) Viewed 1680 times

Bosch Packaging

- I hope I'm not just imagining this, but this new fuel pump also seems to have eliminated another issue which I have attributed to various things in the past, but never the fuel pump. Whenever I was at a stop and would press the accelerator with anything but the lightest touch, there would be a short delay and then a thump as the car began accelerating. Previously I had thought it was either a motor mount or transmission issue, but now it seems to have gone away, and acceleration is smooth and immediate when I press the pedal. I'm wondering if the pump has been underperforming for a while now, and the delay/thump when accelerating was a result of a slight loss of fuel pressure or diminished delivery while at a stop, followed by a thump when the larger burst of fuel is delivered. I had been noticing the fuel smell for a while, the thump when accelerating a bit more recently, and the long crank when starting just within the past month, so I'm wondering if the failure was progressive.

- Perhaps related to the above: When I had the seats out and the access hatches off, and was testing to see where the pump was leaking from, I could hear almost no noise from the pump. After replacement, however, when I tested before putting things back together, the new pump was extremely loud in comparison. Sort of like a constant whooshing. At first I thought I had perhaps not installed it correctly, so I went back and re-seated the pump and retightened the lock rings, but the noise remained. Now I'm thinking that this is probably what it's supposed to sound like, the whooshing being the sound of fuel rushing into the line, and now that the covers, insulation, and seats are all reinstalled, I can't hear it at all.

I'm going to monitor things very carefully to see if any other changes occur due to the newer, healthier fuel pump.

[jimmy57]

There is a fuel pump inlet screen made onto the bottom of the pump. You would likely break stuff taking it apart to put that screen on it if they provided one. The screen containing part is the black plastic circular pump mount that has "fingers" with latching tabs that holds fuel pump into the white plastic cup. The fuel filter is under the car but it is downstream of pump and catches pump wear particles so they do not foul the fuel injectors and fuel pressure regulator. That is just some standard statement for fuel pump boxes as some are a pump and not an assembly that includes the inlet strainer.

[prwood]

That is just some standard statement for fuel pump boxes as some are a pump and not an assembly that includes the inlet strainer.

Yup, in fact I just heard back from FCP that they checked the parts they had on the shelf and in fact this part does not require a strainer to be added, and that as you said, the statement on the box is generic. Phew!

[XC70Rider]

One pump I purchased had a sock included but the box was labeled "Strainer Not Included"?

[abscate]

Whenever I was at a stop and would press the accelerator with anything but the lightest touch, there would be a short delay and then a thump as the car began accelerating

Peter....check your VIN with the dealer to see if the 2001 "start stop neutral " software was removed, that was a 2001 only present from Volvo.

Sticky above, too

[prwood]

Quick update after a few weeks: Everything seems good, based on the following criteria:

1. There should be no fuel odor inside or outside of the car when not at a fueling station.
2. Engine should start immediately with no prolonged crank.
3. Engine should perform normally with no decrease in performance, stalls or sputters that might indicate issues with fuel delivery or contamination.
4. Fuel economy should be within expected range.
5. Fuel gauge on dashboard should correctly indicate fuel level throughout the full range from Full to Empty.

I already marked the topic as solved, but thanks again, everyone, for your help!

[chrism]

There was a recall issued for leaking fuel pumps:

https://www.nhtsa.gov/vehicle/2001/VOLVO/V70#recalls

[StickyPocket]

There was a recall issued for leaking fuel pumps:

https://www.nhtsa.gov/vehicle/2001/VOLVO/V70#recalls

Unfortunately, this recall is only valid for cars that are bought/driven in certain warm weather states. I tried to use this recall when my fuel pump failed 2 years ago, but as the car was bought and driven in NJ/NY, i had to pay for the whole thing.

[jking4020]

I just wanted to add that fixing the crack on the top of the fuel pump with JB weld I've seen a lot of fails. Anybody doing this fix should consider using super glue and baking soda. It cures almost immediately and it is harder than the plastic you are sealing. drip in a magnanimous amount of super glue in all four chambers and then cover with baking soda. Use a toothpick to dab it all together and it cures very quickly. I sealed mine with this over a year ago and have had no issues since.