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jumping fuel pump contacts 200 1990

posted by Sven's Maintainer on Fri Dec 28 02:00 CST 2007
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last visit: Sun Sep 16 20:44 CST 2012

[RELATED]

I've saved two posts by lucid (Bruce Young re. jumping fuel pump contacts.

from http://www.brickboard.com/RWD/index.htm?id=1027307
"What is meant by jumping fuse 4 and 6, and how is this done."

"Jumping" means applying voltage from fuse 6 to fuse 4 by connecting the left* side contacts. The voltage applied will go thru fuse 4 to the in-tank feed pump, and also from the fuse 4 contact to the main pump. The pumps should run immediately.

This is best done with a wire having alligator clip at each end.
Fuse 6 is just a convenient voltage source (6 thru 10 are always hot).
Fuse 4 is the tank pump fuse for 240s since '85. Earlier 240s use fuse 5.

* Using the Left side (closest to the door) contacts maintains the normal direction of current flow in the pump circuits.

--
Bruce Young

+++++++++++++++++++++++++++++++++++++

and another post, 9/11/06

Here are some things to try (try starting after 1, 2, and 3):

1) Try the new relay
2) Clean fuse #6 and its contacts (assuming it has replaced the older 25A fuse under the hood)
3) Bypass fuse #6 and relay with a jumper from LEFT side of fuse #6 to Left side of fuse #4. Both pumps should run immediately.
4) To hear the Tank pump run by itself, pull fuse #4 and put the jumper from 6 to the RIGHT (output) side of 4.
--
Bruce Young
--
Sven: '89 245 NA, 951 ECU, expanded air dam, forward belly pan reaches oem belly pan, airbox heater upgraded, E-fan, 205/65-15 at 50 psi, IPD sways, no a/c-p/s belt, E-Codes, amber front corner reflectors, aero front face, quad horns, tach, small clock.

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No power into ECU - am I testing it correctly, and what next? [200][1990]
posted by curiousheights on Wed Dec 26 17:34 CST 2007 >

No power into ECU - am I testing it correctly, and what next? [200][1990]
posted by Sven's Maintainer on Thu Dec 27 00:17 CST 2007 > V

No power into ECU - am I testing it correctly, and what next? [200][1990]
posted by yama on Thu Dec 27 01:40 CST 2007 > V
- checked terminal 6, no power; OBD slots 2 & 6 are 1-1-1 [200][1990]
  posted by curiousheights on Thu Dec 27 01:58 CST 2007 > V
  - checked terminal 6, no power; OBD slots 2 & 6 are 1-1-1 [200][1990]
    posted by yama on Thu Dec 27 02:19 CST 2007 > V
    - would forgetting to tighten the timing belt after it was installed possibly be a cause? n.m.i. [200][1990]
      posted by curiousheights on Thu Dec 27 02:26 CST 2007 > V
      - would forgetting to tighten the timing belt after it was installed possibly be a cause? n.m.i. [200][1990]
        posted by yama on Thu Dec 27 03:30 CST 2007 > V
      - would forgetting to tighten the timing belt after it was installed possibly be a cause? n.m.i. [200][1990]
        posted by TONY H subscriber on Thu Dec 27 05:54 CST 2007 > V

No power into ECU - am I testing it correctly, and what next? [200][1990]
posted by jbowser on Thu Dec 27 02:33 CST 2007 > V

No power into ECU - am I testing it correctly, and what next? [200][1990]
posted by rstarkie subscriber on Thu Dec 27 04:37 CST 2007 > V
- My ECU is...(561 pink or white label or the 951)....neither? [200][1990]
  posted by curiousheights on Thu Dec 27 15:43 CST 2007 > V
  - My ECU is...(561 pink or white label or the 951)....neither? [200][1990]
    posted by yama on Fri Dec 28 01:05 CST 2007 > V
    - jumping fuel pump contacts [200][1990]
      posted by Sven's Maintainer on Fri Dec 28 02:00 CST 2007 > V
    - Curiousity - is there an upgrade for the 572 or is that my only option looking for a spare? n.m.i. [200][1990]
      posted by curiousheights on Fri Dec 28 06:24 CST 2007 > V
      - Curiousity - is there an upgrade for the 572 or is that my only option looking for a spare? n.m.i. [200][1990]
        posted by yama on Fri Dec 28 08:28 CST 2007 > V
  - Are we going off-track here? EDIT at 9:55 EST [200][1990]
    posted by lucid subscriber on Fri Dec 28 02:10 CST 2007 > V
    - Are we going off-track here? [200][1990]
      posted by jbowser on Fri Dec 28 02:31 CST 2007 > V
      - Are we going off-track here? [200][1990]
        posted by rstarkie subscriber on Fri Dec 28 02:38 CST 2007 > V
        
        Are we going off-track here? [200][1990]
        posted by lucid subscriber on Fri Dec 28 06:52 CST 2007 > V
        
        Yay! Something I don't have to worry about! 1990 brick... yippee! ;-) [200][1990]
        posted by curiousheights on Fri Dec 28 07:06 CST 2007 > V
        
        This response was delete twice for some reason. [200][1990]
        posted by lucid subscriber on Fri Dec 28 08:54 CST 2007 > V
        
        Thank you lucid for a moment of lucidity! (Sorry, couldn't resist.) [200][1990]
        posted by curiousheights on Fri Dec 28 14:40 CST 2007 > V
        
        This response was delete twice for some reason. [200][1990]
        posted by rsjones on Fri Dec 28 15:13 CST 2007 > V
        
        Are we going off-track here? [200][1990]
        posted by jbowser on Fri Dec 28 16:01 CST 2007 > V
    - Are we going off-track here? [200][1990]
      posted by yama on Fri Dec 28 02:38 CST 2007 > V
    - My no power was at ECU (box in passenger footwell) connector pin 6. Where'd ICU come from? n.m.i. [200][1990]
      posted by curiousheights on Fri Dec 28 06:17 CST 2007 > V
      - I used ICU to mean the Ignition Control Unit [200][1990]
        posted by lucid subscriber on Fri Dec 28 06:31 CST 2007 > V
        
        Yes, ignition ECU from Bentley 280.11. Thanks for explaining. n.m.i. [200][1990]
        posted by curiousheights on Fri Dec 28 06:36 CST 2007 > V
    - Bentley ignition wiring diagram 280.10.fig 19, am I reading it right, and where is the power stage located to check? And more... [200][1990]
      posted by curiousheights on Sat Dec 29 23:31 CST 2007 > V
      - Bentley ignition wiring diagram 280.10.fig 19, am I reading it right, and where is the power stage located to check? And more... [200][1990]
        posted by jbowser on Sun Dec 30 03:05 CST 2007 > V
        
        Thank you very much for correcting my errant path! [200][1990]
        posted by curiousheights on Sun Dec 30 03:37 CST 2007 > V
        
        Thank you very much for correcting my errant path! [200][1990]
        posted by jbowser on Sun Dec 30 14:27 CST 2007 > V
  - My ECU is...(561 pink or white label or the 951)....neither? [200][1990]
    posted by rstarkie subscriber on Fri Dec 28 02:20 CST 2007 > V

I've confirmed no spark [200][1990]
posted by curiousheights on Sat Dec 29 11:10 CST 2007 > V
- I've confirmed no spark [200][1990]
  posted by yama on Sun Dec 30 02:08 CST 2007 > V
  - spark plug grounded [200][1990]
    posted by curiousheights on Sun Dec 30 02:18 CST 2007 > V
    - spark plug grounded [200][1990]
      posted by yama on Sun Dec 30 02:33 CST 2007 > V
      - power stage location [200][1990]
        posted by Sven's Maintainer on Sun Dec 30 02:53 CST 2007 > V
        
        power stage location [200][1990]
        posted by jbowser on Sun Dec 30 03:12 CST 2007 > V
  - n.m.i. [200][1990]
    posted by curiousheights on Sun Dec 30 03:15 CST 2007 > V

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jumping fuel pump contacts 200 1990