 1.8 to 2.0 engine swap issue's. Help!, No power to fuel pump! |
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| ric birks |
 Apr 11 2009, 09:07 PM
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#1
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Newbie  Group: Members Posts: 25 Joined: 19-December 08 From: Salem, Utah Member No.: 9,864 Region Association: Rocky Mountains  |
Just finished installing the 2.0 in my 74 that had a great running 1.8 Went to start it up and it would just turn over. Somehow I have lost my power to my fuel pump. I put direct power to the fuel pump and the car starts and runs. Where did I lose my fuel pumps power? Any help would be very welcomed. Thanks, Ric.
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| euro911 |
Apr 11 2009, 09:55 PM
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#2
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Retired & living the dream. God help me if I wake up! Group: Members Posts: 8,849 Joined: 2-December 06 From: So.Cal. & No.AZ (USA) Member No.: 7,300 Region Association: Southern California 
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Ric - check your relays and the 25 Amp fuse [91] on the relay board in the engine compartment, driver's side.
The 'Power Supply' [74] and 'Fuel Pump' [75] relays both need to be activated when the ignition switch is in the 'ON' position. The Fuel Pump relay won't operate if the Power Supply relay is not operating. Attached thumbnail(s)  Attached image(s) 
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| swl |
Apr 11 2009, 09:58 PM
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#3
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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 |
I'm a d-jet guy but if memory serves me correctly the L-Jet fuel pump runs off the dual relays over by the battery. On the D-Jet it runs off the main relay board. How much of the D-Jet have you installed with the swap? Which relay board are you using? Seems to me that if you do that engine swap your are going to have to add some wiring to bring the fuel pump back to the main relay board. It would take some time with the wiring diagrams to sort out just what the mods would be.
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| Cevan |
Apr 12 2009, 09:09 AM
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#4
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Senior Member Group: Members Posts: 1,079 Joined: 11-December 06 From: Western Massachusetts Member No.: 7,351 |
I just did what you are doing (1.8 to 2.0 swap, L-Jet to D-Jet). I used the existing relay board, but you need to install two round relays in the board in the second and third positions, per the above diagram. Those are empty with the L-Jet.
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| ric birks |
Apr 12 2009, 09:38 AM
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#5
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Newbie Group: Members Posts: 25 Joined: 19-December 08 From: Salem, Utah Member No.: 9,864 Region Association: Rocky Mountains |
QUOTE(Cevan @ Apr 12 2009, 09:09 AM)  I just did what you are doing (1.8 to 2.0 swap, L-Jet to D-Jet). I used the existing relay board, but you need to install two round relays in the board in the second and third positions, per the above diagram. Those are empty with the L-Jet. Thanks for the great info. Turns out I had a bad fuel pump relay. I changed it and it worked! Now I just have to deal with the leaking exhaust manifold. That will hopefully go easy. Right!! |
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