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Hi. So today i installed the new Bosch fuel pump from pelican, car wants to start with starter fluid but then dies. Has spark dme and pump fuse new. Still not getting gas. Must be a sensor. Bummed.
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I can take things apart , and change parts but. It great with electric stuff. I’m 74 now and getting better from bone cancer so working on my car is hard now. Was hoping the fuel pump and dme and fuse would do the trick. So I probably have two good Bosch fuel pumps now.
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did you really try to jump the fuel pump at the fuse panel as i have showed you on the picture ?And the pump did not run? Ivan
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1985 911 with original 501 587 miles...807 226 km "The difference between genius and stupidity is that, genius has its limits". Albert Einstein. |
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Ivan. I did use my alligator clips wire to jump in the fuse panel like you showed me. I got nothing ! I’ll try again today. It’s weird , car wants to start with starting fluid. So still no gas going to the motor.
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Have you checked the back of the DME relay socket for bad connections? What typically happens is that the #30 wire (big red - constant battery) becomes corroded.
You can check for this by leaving the DME relay plugged-in and removing back cover from the relay socket. Just removing the red wire and cleaning it, can solve starting problems.
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Dave |
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Or you may try the 3-wire jumping of the DME relay socket described by Quicksilver on previous page. Remove the DME relay under driver seat. Make a piece of wire like the one shown on the pic. It is like a star with 3 legs.
If you can't get a hand on banana plugs of the right size, just twist and fold back each end of wires so as to form a ball that fit snug inside the female terminal and make contact with it. Terminals to short together are 87, 87b and 30. Then you should hear the pump running. This can save you from being towed to get home. In order to just check if the pump can be heard, you can try to just short 30 and 87b (leaving out 87). This time a single piece of wire is enough and this should allow to make the pump run. No need to switch the ignition on. This is of course just to check and hear the pump run, not to start the engine.
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Gilles RoW 88 Carrera coupé |
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I have two new DME relays. All the same , car will not start.
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Yes but Dave and I are not talking about the DME relay itself, but its socket. This is the next thing to be checked.
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Gilles RoW 88 Carrera coupé |
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See if that works. |
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When I jump 3 fuse , where do I put the other clip please?
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Bottom of fuse #2.
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Thanks!
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Holy crap!! Fuel pump came alive. Now must find out why car not starting. Should I keep making the pump work with leads to prime the pump?
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Ok here is the thing. By jumping the pump came alive but now it will not. Fuses look ok itbdid prime the motor a bit
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Nick ,by any chance do you have any kill switch-relay you know of which could be in the fuel pump circuit.
Let`s see the wire to your fuel pump fuse-the bottom one....take a picture 6th direction from your windshield
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1985 911 with original 501 587 miles...807 226 km "The difference between genius and stupidity is that, genius has its limits". Albert Einstein. |
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The jumper suggestions are a waste of time when the #30 female connector is bad! Remember, the DME ECM also gets power from the #30 wire at the DME relay socket.
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Dave Last edited by mysocal911; 05-10-2024 at 12:02 PM.. |
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That's been a waste of time. Read post #57!
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Dave |
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Then jump the fuel pump relay as wazzz, quicksilver said below. http://forums.pelicanparts.com/porsche-911-technical-forum/1161236-3-2-just-died-after-ride-2.html#post12244688 http://forums.pelicanparts.com/porsche-911-technical-forum/1161236-3-2-just-died-after-ride-3.html#post12247146 Turn the key and see if it works, no need to start. |
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As suggested, I jumped top of fuse 3 bottom of fuse 2 , pump came alive. Replaced some fuses . Fuel pump fuse was wrong amp , car started , car is fixed.
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Typically something simple!
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Dave |
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