Volvo AWD 850 Forum

INDEX FOR 10/2025(CURRENT) INDEX FOR 5/2023 850 INDEX

[<<]  [>>]


THREADED THREADED EXPANDED FLAT PRINT ALL
MESSAGES IN THIS THREAD




  REPLY TO THIS MESSAGE    PRINT   SAVE 

Fuel Return Line 850

posted by  someone claiming to be Edwin on  Thu Oct 11 16:06 CST 2012 [RELATED]

I have a 1994 N/A 5 speed 850 and I continue to have an issue with the engine flooding. Fuel literally pours out of the intake manifold. When I pull the vacuum line form the FPR there is not fuel coming out so I know that is ok. But when I disconnect the fuel return line at the fuel rail absolutely nothing comes out. As I look under the car I see a gizmo that looks likes a fuel pressure regulator on the fuel return line. I can see it when I open the hood and look behind the engine. It is located on the fuel return line right below the firewall. Does anyone have any idea what it does or what part number it is? I have checked http://www.volvowebstore.com and looked at all the diagrams but no luck. Any suggestions would be greatly appreciated.

Edwin








  •   REPLY TO THIS MESSAGE    PRINT   SAVE 

    Fuel Return Line 850

    posted by  someone claiming to be fixit2002 on  Fri Oct 12 09:48 CST 2012 [RELATED]

    I would think that there's nothing coming out of the return line because it's all leaking out of the injectors. Maybe the regulator is stuck and allowing the fuel pump to force gas out of the injectors. Do you have a manual vacuum pump you could connect to the regulator or maybe a vacuum gauge that you could attach to the line to see if there's any vacuum reading?








    •   REPLY TO THIS MESSAGE    PRINT   SAVE 

      Fuel Return Line 850

      posted by  someone claiming to be Edwin on  Fri Oct 12 21:01 CST 2012 [RELATED]

      Thanks Fix It. I had the car towed today to an indy Volvo shop and turns out the ECU is bad. I ordered 1 on ebay today for $100.

      Edwin







<< < > >>



©Jarrod Stenberg 1997-2022. All material except where indicated.


All participants agree to these terms.

Brickboard.com is not affiliated with nor sponsored by AB Volvo, Volvo Car Corporation, Volvo Cars of North America, Inc. or Ford Motor Company. Brickboard.com is a Volvo owner/enthusiast site, similar to a club, and does not intend to pose as an official Volvo site. The official Volvo site can be found here.