Hi I am new to this forum but I wanted to run my issue by someone who knows more about these cars that I do.

My car was low on gas, I went to start it, it started up but sputtered and when I hit the brake it stalled out and then would just crank over and over with no start.

The engine codes we got off our reader were

Replacing the Camshaft Position Sensor and Misfire in Cylinder 2. P0017 P00341, P00335

Replaced both of those still doing the same thing, been doing some reading and I have seen on other posts that people suggested to replace the FPR.

Any idea's?

 

you'd need to measure the pressure at the fuel rail to determine if you have a pump/relay issue. a failure of the fuel pressure regulator can also cause difficult cold starts - this is the device on the end of the fuel rail with the fuel line and a vacuum line attached. If you pull off the s shaped vaccuum line and it leaks fuel, time to replace. you can also try jumpering the fuel pump relay to help build pressure prior to trying to start. As to the other codes, the misfire can be caused by wonky fuel pressure and the cam position codes are pointing to the sensor or the VVT. Hopefully they will clear once you solve the starting issue.

 

Is the part that I should detach in the picture I attached, or is it the longer thicker hoses? I am a girl so I am not sure the lingo. Replaced the position sensor today and still doing the same thing. The car was very low on gas the last time it did start. I thought it was just out, went and got gas in the can and brought it back but it would not start back up. Had been having a lot of hesitation. How do i check the pressure like you suggested? Should we attempt to start when checking for the leak, or should the car be off? Thanks for the reply!

 

Volvo 8658092 is the part I am referring to. https://www.tascaparts.com/oem-parts...ulator-8658092

the part fits on the right hand side of the fuel rail (the silver cover on top snaps off to expose the fuel injectors which plug into the rail). There's two screws holding it in - it fits into the side of the rail via an o-ring and the fuel line clips in to the top. The bottom has a vacuum line.

To check for fuel pressure, you need a gauge (Autozone will probably rent one) and you will see a shrader valve (like on a tire) on the end to clip onto. Check Youtube for vids on how to measure.

 

Thank you.

I am also getting no power to the part that the sensor plugs into, got a code P0335 Circuit Malfunction I tested the circuits and there was no power

 

Very low read on it under 20PSI. Should someone be trying to start it while I test the pressure as well? I just don't want to buy another part that wont fix the problem. This car has about 146,000 miles on it and that part you showed me is the one that I was thinking of replacing, due to my reading other post with similar issues as mine, but I don't understand why I am not getting a code for that? Thank you for your help!

 

There won't be a code for low fuel pressure as there isn't a fuel pressure sensor like on the newer Volvos.

Make sure you have a couple gallons of gas in the car. I've seen folks troubleshoot a non-starting car for ages then put some gas in it and it runs fine.

The fuel pressure on this car is designed a certain way. When you first turn the key on (not start, just to power on) the fuel pump activates and you should see around 45 psi immediately. Now turn the key off and the pressure should hold. If it immediately drops to below 20 psi then suspect the fuel pressure regulator you pictured above.

 

I will try that!

Thank you.