 Fuel pump relay location, 1974 D-Jet |
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| mittelmotor |
 Aug 10 2012, 12:09 AM
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#1
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Member  Group: Members Posts: 334 Joined: 21-May 12 From: SoCal Member No.: 14,464 Region Association: None  |
Hi guys,
I tried searching a bit, but couldn't find this exact info. Where is the fuel pump relay on a 1974 914 2.0 located? I'm doing a V-8 conversion, so I sold the driver's-side relay board in the engine compartment with the 2.0-liter. I hope it wasn't on there. (IMG:style_emoticons/default/sad.gif) Thanks! |
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| TheCabinetmaker |
Aug 10 2012, 03:56 AM
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#2
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I drive my car everyday Group: Members Posts: 8,325 Joined: 8-May 03 From: Tulsa, Ok. Member No.: 666 |
You sold your fuel pump relay?
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| SLITS |
Aug 10 2012, 07:00 AM
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#3
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"This Utah shit is HARSH!" Group: Benefactors Posts: 13,602 Joined: 22-February 04 From: SoCal Mountains ... Member No.: 1,696 Region Association: None  |
QUOTE(mittelmotor @ Aug 9 2012, 11:09 PM)  Hi guys, I tried searching a bit, but couldn't find this exact info. Where is the fuel pump relay on a 1974 914 2.0 located? I'm doing a V-8 conversion, so I sold the driver's-side relay board in the engine compartment with the 2.0-liter. I hope it wasn't on there. (IMG:style_emoticons/default/sad.gif) Thanks! It was, but is controlled by the ECU (or at least the ground to it is). |
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| Dave_Darling |
Aug 10 2012, 09:47 AM
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#4
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914 Idiot Group: Members Posts: 15,067 Joined: 9-January 03 From: Silicon Valley / Kailua-Kona Member No.: 121 Region Association: Northern California 
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It was on the board that you sold.
(IMG:http://www.914world.com/bbs2/uploads_offsite/www.pelicanparts.com-121-1344613651.1.jpg) --DD |
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| germanv82000 |
Aug 10 2012, 09:55 AM
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#5
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scott pickering Group: Members Posts: 26 Joined: 19-July 06 From: stockton, ca Member No.: 6,464 Region Association: Northern California |
If you are doing a v8 conversion you can wire the fuel pump to a switched circuit of your choice. Carbureted? Fuel injected pump is going to put out probably too much fuel pressure.
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| mittelmotor |
Aug 10 2012, 07:44 PM
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#6
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Member Group: Members Posts: 334 Joined: 21-May 12 From: SoCal Member No.: 14,464 Region Association: None |
Thanks guys. I thought if I still had the relay, I could simply run the wire from the original pump's plug to the new front-mounted pump, but now I know I need to create a new circuit.
It's an injected LS1, and I'm using the GM filter/regulator (58 psi) and a Walbro 255 pump. --Doug |
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| swl |
Aug 11 2012, 02:18 PM
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#7
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Senior Member Group: Members Posts: 1,409 Joined: 7-August 05 From: Kingston,On,Canada Member No.: 4,550 Region Association: Canada |
back a while ago there was a thread with a cct to run the fuel pump without the ECU. The trick was to do what the ecu does - shut off the fuel pump if the engine stops turning. Important in case of an accident. If I remember right The oil pressure switch was used to sense that the engine was running.
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