General Tech Help Good at troubleshooting? Have a non specific issue? Discuss general tech topics here.

My Project-1999 Disco 1

Thread Tools
 
Search this Thread
 
  #1  
Old 01-01-2012, 03:10 PM
HOSER's Avatar
Drifting
Thread Starter
Join Date: Mar 2010
Location: Stettler, Alberta
Posts: 25
Likes: 0
Received 0 Likes on 0 Posts
Default My Project-1999 Disco 1

I've got the fuel pump in, the wires are all joined up from new connectors to chassis wires---and then-no power at fuel pump. Checked fuses-all ok. I'm off to check Multifunction Relay today, and trace through inertia switch. Question-does the Land Rover have the standard logic for bringing on the fuel pump ie: power fuel pump for 15 to 20 sec. upon turning ign.key to pos.11, then power fuel pump off untill crankshaft sensor proves rotation at X rpm?? This, I believe is standard logic of most FI systems, then if auto quits after 20-30 sec. run time & rail pressure is low or 0- it is time to check crankshaft sensor. Does this sound reasonable. I'm going to power fuel pump with bypass wire to prove it works and then start tracing trouble from there.
 
  #2  
Old 01-01-2012, 04:18 PM
Spike555's Avatar
Team Owner
Join Date: Jun 2007
Location: Grand Rapids MI
Posts: 26,212
Likes: 0
Received 95 Likes on 72 Posts
Default

Yes the fuel pump gets power for 5-10 sec after the key is turned to position 2, then fuel pump shuts off until engine is turned over but I do not know how many rpm.
 
  #3  
Old 01-01-2012, 05:57 PM
Savannah Buzz's Avatar
Super Moderator
Join Date: Jan 2011
Location: Savannah Georgia
Posts: 16,322
Likes: 0
Received 82 Likes on 79 Posts
Default

You might be immobilized - see attached from RAVE. Check for +12 Volts or better to ground on both sides of inertia switch. If no volts at inertia, might be immobilzer.
 
Attached Files
File Type: pdf
99 fuel pump inertia.pdf (502.0 KB, 176 views)

Last edited by Savannah Buzz; 01-01-2012 at 06:22 PM.
  #4  
Old 01-01-2012, 10:27 PM
HOSER's Avatar
Drifting
Thread Starter
Join Date: Mar 2010
Location: Stettler, Alberta
Posts: 25
Likes: 0
Received 0 Likes on 0 Posts
Default

It's a great day. Thought I would remove multifunction relay. Metered it and coil looked OK. Removed inertia switch & it is ok. Set meter up and found 12 volt at inertia switch from multifunction relay at ign.sw to position 11. Ran a bypass wire back to fuel pump from 12 volts at inertia switch and viola, the unit started ( I ran it 40 seconds or so). Bonus, all the WD40 I soaked onto auto shifter mechanism-worked. I can freely shift from neutral to P and all through gears. So the boo boo is my wiring from inertia switch to new pump & connectors. I used crimp connectors with shrink wrap. I guess I'm going to redo them & solder them tomorrow and then look out as this baby will be on the street and proven worth the rest of the major maintenance over the next week or so.
 
Related Topics
Thread
Thread Starter
Forum
Replies
Last Post
SinisterMoose
Discovery II
25
06-08-2015 06:20 AM
Corrigan
Retired - Private For Sale/Trade Classifieds
0
04-26-2013 02:38 PM
HOSER
Discovery I
12
12-18-2011 01:45 PM
jafir
Discovery II
22
04-30-2011 01:40 PM
Gallep
Retired - Private For Sale/Trade Classifieds
2
10-13-2006 02:28 PM



Quick Reply: My Project-1999 Disco 1



All times are GMT -5. The time now is 08:55 AM.