I have a 2009 Volvo V70 with 70k. First start of the day it is missing out and has actually thrown code for cylinder misfire. My local mechanic found it had low fuel pressure at fuel rail and wnats to replace fuel pump. It starts and runs fine through the day but first start is usually the problem. As a note I brought it up from Miami into Indiana winter this year but it was doing it before it got cold as well. I just don't want to go to the expense of replacing fuel pump to find out it was a sensor or some other problem...seems low miles for a bad fuel pump? Also for this year can you access the fuel pump through rear seat?

 

I do believe it is under the rear seat, but your better off taking a fuel pressure gauge and actually testing it through the port on the fuel rail instead of using the computer if they did that. If pressure seems fine, check spark plugs, your at that mileage for those to be replaced. If it is the sensor, I think they only run about $40-50. Still better than a pump, which like you said shouldn't be dying at that mileage, even if driven very spirited.

 

did the tech say the pressure was low at start up or after running for a bit? If you have low pressure at initial start up that could be due to something bleeding off the residual pressure vs an issue with the pump.

 

Just wondering if you resolved this problem as I have the exact issue. My mechanic told me to replace the coils and pump. I only get a misfire at the start of the day. Once it runs no issues or misfire.

 

Thanks....I am going to change plugs and Volvo said it needed fuel pressure sensor AND new fuel pump..with only 70k I am going to try the simplest things first.

 

It was my local Euro shop....I believe he said it fell off after running. I am double checking as Volvo is wanting 3K to do fuel pump, pressure sensor and plugs!!!!

 

mine will occasionally do it through the day and misfire.....I will let you know what I come up with!