2000 V70 XC died on highway to Florida

dwmeganbob · Post by **dwmeganbob** » 11 Aug 2010, 12:33

So, on one of the hottest Saturdays of the year, I have my 2000 V70 XC loaded for the annual trip to Florida - car topper, hitch-mount bike rack, 3 kids, 1 baby and wife. Then, in the worst possible place between Atlanta and St. Augustine - Vienna, GA - while cruising at 70 mph, the engine sputters and quickly dies.

After much pain and sweat I manage to get the car and family towed to the nearest truck stop where I learn the engine threw two 'injector circuit/open' codes and there is no fuel pressure at the injector rail.

After great pains securing a rental SUV, I spend the next week in Florida while my V70 sits in a truck stop in middle Georgia with what I assume is a failed fuel pump.

After towing the car home on a UHaul trailer, I notice in my garage that it sounds like the pump is working, I hear it spool then I hear liquid discharging back in the tank. Does this mean my pump is OK and that the Fuel Pressure Regulator is bad? Would the FPR fail outright while doing 70mph? What else might throw an injector circuit/open code and cause no fuel pressure at the rail? I guess the pump might still be bad even though it's making what sounds like the normal noise?

Thanks,
DW

Post by **jblackburn** » 11 Aug 2010, 13:32

It might be that your fuel pump relay died on you. The injector relay could have also died.

It can cause the pump to die all of a sudden, and then work again.

Will it start now that you've got it home?

FCPEURO · Post by **FCPEURO** » 11 Aug 2010, 16:34

Try pulling the fuel pump relay and jumping the connection so that the fuel pump stays on and see if you can get fuel pressure to the fuel rail. If you can, try and start the car to see if it will run. If it will, it is the relay for sure.

Now if you can't get pressure at the rail, then it is obviously the pump. Good luck and keep us posted.

Post by **Pauloil** » 11 Aug 2010, 17:52

read the code and post it here, if you can.

here's a post how to check the relay 103:

https://www.matthewsvolvosite.com/forums ... 1&start=14

dwmeganbob · Post by **dwmeganbob** » 16 Aug 2010, 06:25

I did verify the relay was not bad since the symptons are the same with it jumped or not. I hadn't read anything yet about injector relays, but since I'm getting no pressure at the rail could that really be an issue?

I guess I'll go ahead and replace the pump since that seems to be a normal risk item given the age of the car. It seems like it would be good to replace the FPR at the same time, but it doesn't look like it's accessible without dropping the tank. I was planning the cut-through approach on the fuel pump to save time.

dwmeganbob · Post by **dwmeganbob** » 30 Aug 2010, 11:20

Went ahead and assumed the pump noise was not a good noise and the most likely reason for a complete loss of pressure at speed, therefore, I bought the entire fuel pump assmbly from FCP for about $340 after discounts and shipping. Installed the new unit and started up after a few seconds! I opted for the whole fuel pump assembly after looking at the rusted float contact point and feeling like something might break trying to put all pieces back together.

The biggest mistake I made was being too bull headed to keep the harness intact. After much struggling and cursing and one redo to put the wire through the screw ring, I finnaly got the wiring harness routed back. The wiring added an extra two hours to my install! Of course I could do it much quicker now, hah.

My tool for releasing the lines was easier then cutting a fork, I had a small, thin open ended wrench that fit by simply bending one end over 90 degrees.