 Replaced Fuel Pump, Replacement Pump Run Backwards |
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| jrrobertson |
 May 28 2023, 07:35 PM
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#1
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Newbie  Group: Members Posts: 27 Joined: 28-December 16 From: Wolverine Lake , Michigan Member No.: 20,704 Region Association: Upper MidWest 
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The fuel pump (0580 463 009) on my 71 quit working. Even with power connected directly to the pump it did not work. I replaced it with a spare pump (0580 463 005) I had. This one only builds pressure if I switch the positive and negative leads. It will run when connected normally but it will run backwards and will push fuel down the return line. Anyone have any ideas as to why this is? The car runs OK with the wires switched.
The car has the original D-jet fuel injection system. |
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| 930cabman |
May 29 2023, 06:11 AM
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#2
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Advanced Member Group: Members Posts: 3,063 Joined: 12-November 20 From: Buffalo Member No.: 24,877 Region Association: North East States
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Switch the + and the - terminals on the pump. I recently had the same issue with an aftermarket pump.
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| jrrobertson |
May 29 2023, 02:12 PM
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#3
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Newbie Group: Members Posts: 27 Joined: 28-December 16 From: Wolverine Lake , Michigan Member No.: 20,704 Region Association: Upper MidWest
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QUOTE(930cabman @ May 29 2023, 08:11 AM)  Switch the + and the - terminals on the pump. I recently had the same issue with an aftermarket pump. Thank you. I did switch the terminals at the pump, and it works great. I finished restoring the car about 3 years ago and could not get the fuel injection system to function properly, so I stored it and restored another one with carbs. That car is done, and I have been driving it, so I decided to get the fuel injected one running properly. After putting in the new fuel pump and blocking off the AAR valve the car is running good. It even idles at 800 rpm. It is a nice car and now I can drive it this summer. Fuel Injected Car  Car with Carbs  |
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| 930cabman |
May 29 2023, 04:57 PM
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#4
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Advanced Member Group: Members Posts: 3,063 Joined: 12-November 20 From: Buffalo Member No.: 24,877 Region Association: North East States
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QUOTE(jrrobertson @ May 29 2023, 02:12 PM) QUOTE(930cabman @ May 29 2023, 08:11 AM) Switch the + and the - terminals on the pump. I recently had the same issue with an aftermarket pump. Thank you. I did switch the terminals at the pump, and it works great. I finished restoring the car about 3 years ago and could not get the fuel injection system to function properly, so I stored it and restored another one with carbs. That car is done, and I have been driving it, so I decided to get the fuel injected one running properly. After putting in the new fuel pump and blocking off the AAR valve the car is running good. It even idles at 800 rpm. It is a nice car and now I can drive it this summer. Fuel Injected Car Car with Carbs The best of both worlds, did you test all of the FI components prior to installing them? |
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Posts in this topic
jrrobertson Replaced Fuel Pump May 28 2023, 07:35 PM
windforfun Why is the part number different? Is that a 914 p... May 28 2023, 07:39 PM
jrrobertson
Why is the part number different? Is that a 914 ... May 29 2023, 05:36 AM bkrantz I think you have to turn your transmission upside-... May 28 2023, 08:03 PM wonkipop
The fuel pump (0580 463 009) on my 71 quit workin... May 29 2023, 04:19 PM |
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