Quantcast
RWD - Feul pump relay

Volvo RWD 700 Forum

INDEX FOR 4/2015(CURRENT) INDEX FOR 9/2014 700 INDEX [<<]  [>>]

THREADED THREADED EXPANDED FLAT PRINT ALL
MESSAGES IN THIS THREAD




  REPLY TO THIS MESSAGE    PRINT   SAVE 

Feul pump relay 700 1989

I read the FAQ's and they got me close.
No sound from the in tank fuel pump.
No clicking from the relay.
When I test voltage across fuse #30 I get no power when ignition is turned to on.
I do get voltage when the car is running.

Is the first stage of the pressure relay failed.
The car is 1989 765t.

Thanks ahead!

 





[about brickboard ads]
Cut and paste link:



  •   REPLY TO THIS MESSAGE    PRINT   SAVE 

    Feul pump relay 700 1989

    You said fuse 30? Don't think you meant that. Intank pump bad, car will run. Main pump bad, won't run..Look here again.

    http://www.brickboard.com/FAQ/700-900/FuelSystem.htm#FuelPumpandFIRelayDiagnosticTests
    --
    Post Back. That's whats makes this forum work.

     




    Cut and paste link:



    •   REPLY TO THIS MESSAGE    PRINT   SAVE 

      Feul pump relay 700 1989

      Pulled the relay. Looks brand new, solder joints all test out well with ohm meter.
      The resistance across the resistor was around 1.7 ohms.

      Tried the jumper test terminals 30 to 87/2. Both fuel pumps ran full blast, with or without the keys.

      Guess I'm off to the junkyard, or worse.
      Wait... Should I test the connections to the relay board?

      It is fuse #30 that I tested. It is labeled fuel pump tank, and lambda-sond.

       




      Cut and paste link:



      •   REPLY TO THIS MESSAGE    PRINT   SAVE 

        Feul pump relay 700 1989

        Trying to figure out exactly what your problem is? Pumps won't run just turning the key on. Safety design.
        --
        Post Back. That's whats makes this forum work.

         




        Cut and paste link:



        •   REPLY TO THIS MESSAGE    PRINT   SAVE 

          Feul pump relay 700 1989

          I'm sorry,
          I would say the in tank pump is not running.
          The main pump is running for sure.

          Thanks

           




          Cut and paste link:



          •   REPLY TO THIS MESSAGE Replies to this message will be emailed.    PRINT   SAVE 

            Feul pump relay 700 1989

            "No clicking from the relay.
            When I test voltage across fuse #30 I get no power when ignition is turned to on.
            I do get voltage when the car is running."


            Your description is confusing us because there is no fuse #30. The fuse numbers stop at #26.
            Do you mean Terminal 30 on the Fuel relay? If so, check fuse#1.

            And how do you then get the car running if the "first stage" (System relay) doesn't click with the key on? What are you jumpering?

            Then you say: "It is fuse #30 that I tested. It is labeled fuel pump tank, and lambda-sond."
            I'm looking at the '89 B230FT Factory diagram. It shows fuse #11 for the Tank pump and nothing else.

            We need to get on the same page somehow.

            --
            Bruce Young, '93 940-NA (current), 240s (one V8), 140s, 122s, since '63.

             




            Cut and paste link:



            •   REPLY TO THIS MESSAGE    PRINT   SAVE 

              Feul pump relay 700 1989

              It sure looks like fuse #30 to me. Getting on the same page maybe; the car is a 1989 760 Turbo wagon and the fuse panel is at the end of the dash, drivers side.
              I've been trying to find a picture for the last half hour. I give up.

               




              Cut and paste link:



              •   REPLY TO THIS MESSAGE Replies to this message will be emailed.    PRINT   SAVE 

                One last shot... 700 1989

                It looks like "the same page" isn't in the cards (or the 700/900FAQ).
                The closest I got was to guess that your car's fuses are located as in this pic...

                Then I thought this might be your relay panel, where "B" is the Fuel Injection relay...


                But following that it says, "In the 760/960 diagram shown above, A, B, F, J, L, and M are permanently attached to the board." Yet you "pulled" your Fuel relay (?), leaving me confused as ever.

                I'm guessing the relay you pulled is white with 2 relays inside, PN 3523608? If so, the relay 30 to 87/2 jumper only bypassed the fuel pump relay.

                Going back to your earlier question, "Is the first stage of the pressure relay failed." I'd now say yes, the "System relay" (your "first stage") may be bad, although it seldom fails. You can test for it by adding a leg to your 30==>87/2 jumper, so you also have 30==> 87/1.

                Adding that 2nd leg will get +12 to all the other good stuff that may be missing:
                • ECU 9
                • AMM pin5
                • RSR (Radio noise Suppression Relay for +12 to Injectors)
                • IAV (Idle Air Valve aka IAControl)

                Here's hoping...

                --
                Bruce Young, '93 940-NA (current), 240s (one V8), 140s, 122s, since '63.

                 




                Cut and paste link:



                •   REPLY TO THIS MESSAGE    PRINT   SAVE 

                  One last shot... 700 1989

                  Well were getting close. Relay "b" was actually green, but the location is the same. It's been in and out a couple of times and is certainly removable.

                  The fuse panel is similar with the exception of the fold down spare fuse holder.
                  Spares are just randomly dispersed throughout the other fuses, although labeled on the cover.

                  The above is maybe not too important.
                  I am going to salvage today and will be looking for a relay or two. I hear everybody grabs the relays so who knows. I may try your jumper trick later if needed, though I think I have confirmed the pump operation.

                  Interestingly I needed to take a long drive yesterday (70 miles) and it turns out the original problem is intermittent. The car ran really well for about 60 out of the 70 miles with two short episodes of what felt like fuel starvation.
                  Fuel tank level may not be related.

                  Since the car is new to me, I think I am going to replace the fuel filters, maybe the in tank hose, and check for good ground point connections today. My use of the FAQ has me skipping some of the fundamental steps. The process of elimination is still a good method to use.

                  Sounds like I have a full days work.
                  Thanks for replying

                   




                  Cut and paste link:



                  •   REPLY TO THIS MESSAGE Replies to this message will be emailed.    PRINT   SAVE 

                    One last shot... 700 1989

                    Well were getting close. Relay "b" was actually green, but the location is the same. It's been in and out a couple of times and is certainly removable.

                    OK, forget my added jumper leg. Your green relay sounds like a 5-terminal Hella.

                    That means no separate System relay. The '94 940 has a 5-pin fuel relay like that, and uses the RSRelay to gate +12 to those things I listed, plus the injectors. The ECU picks the RSR (wherever it is) when the Key is turned on.

                    Good luck with it.

                    --
                    Bruce Young, '93 940-NA (current), 240s (one V8), 140s, 122s, since '63.

                     




                    Cut and paste link:

[about brickboard ads]


<< < > >>


Users marked in green are currently online.

©Jarrod Stenberg 1997-2014. All material except where indicated.


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.

All participants agree to these terms.
Powered by Denizen - Custom Software for Enthusiasts