Technical help Q & A Got A technical problem with you car? Keep it in here where the techies hang out and we will try to solve it for you!!

mfi xr3i fuel pump relay problem.help plz

Thread Tools
 
Search this Thread
 
Old Jun 15, 2009 | 08:13 PM
  #1  
rickbartlett's Avatar
rickbartlett
Thread Starter
G911 TTA
15 Year Member
 
Joined: May 2008
Posts: 2,843
Likes: 0
From: warwickshire
Default mfi xr3i fuel pump relay problem.help plz

my stepdad has a white xr3i mfi.when he got it ,it had a problem,the fuel pump relay wasnt bridging across.if u open the relay up and push the solenoid thing cross the pump would work.
i took the relay out and by-passed it with a piece of wire so he could use it.ive since got a new relay that i know works.
i put it in and it bridges across when turned over but doesnt fire up the fuel pump?
anyone have any ideas why?
so ive put the piece of wire back in for now but not sure if that could cause any damage.
cheers.any help apreciated
Reply
Old Jun 15, 2009 | 09:27 PM
  #2  
andyuk's Avatar
andyuk
PassionFord Regular
iTrader: (5)
 
Joined: Oct 2005
Posts: 383
Likes: 0
From: birmingham
Default relay

Originally Posted by rickbartlett
my stepdad has a white xr3i mfi.when he got it ,it had a problem,the fuel pump relay wasnt bridging across.if u open the relay up and push the solenoid thing cross the pump would work.
i took the relay out and by-passed it with a piece of wire so he could use it.ive since got a new relay that i know works.
i put it in and it bridges across when turned over but doesnt fire up the fuel pump?
anyone have any ideas why?
so ive put the piece of wire back in for now but not sure if that could cause any damage.
cheers.any help apreciated
fuel cut off inthe boot??
Reply
Old Jun 16, 2009 | 06:30 AM
  #3  
rickbartlett's Avatar
rickbartlett
Thread Starter
G911 TTA
15 Year Member
 
Joined: May 2008
Posts: 2,843
Likes: 0
From: warwickshire
Default

Originally Posted by andyuk
fuel cut off inthe boot??
u only have them on efi xr3i mate,not mfi
Reply
Old Jun 16, 2009 | 08:40 AM
  #4  
tabetha's Avatar
tabetha
20K+ Super Poster.
 
Joined: Jul 2006
Posts: 24,596
Likes: 4
From: uk
Default

The piece of wire won't cause any damage.
As the relay is switching ie closing contacts when it should you know it has earth and switch feed, so long as the battery input 30 or 30/51 and the output 87(pump) are not broken it will work, assuming the relay is ok.
Are you sure when you bridge the relay holder you are not doing it between the switch input and 87 output ?
tabetha
Reply
Old Jun 16, 2009 | 11:18 AM
  #5  
rickbartlett's Avatar
rickbartlett
Thread Starter
G911 TTA
15 Year Member
 
Joined: May 2008
Posts: 2,843
Likes: 0
From: warwickshire
Default

im not sure wich one im bridgeing.but as soon as u turn igniton on the fuel pump primes??
Reply
Old Jun 16, 2009 | 08:00 PM
  #6  
rickbartlett's Avatar
rickbartlett
Thread Starter
G911 TTA
15 Year Member
 
Joined: May 2008
Posts: 2,843
Likes: 0
From: warwickshire
Default

Reply
Old Jun 18, 2009 | 08:18 PM
  #7  
rickbartlett's Avatar
rickbartlett
Thread Starter
G911 TTA
15 Year Member
 
Joined: May 2008
Posts: 2,843
Likes: 0
From: warwickshire
Default

up
Reply

Trending Topics

Old Jul 1, 2012 | 05:59 PM
  #8  
coolrunner6969's Avatar
coolrunner6969
Virgin
 
Joined: Jul 2012
Posts: 2
Likes: 0
From: hayes middx
Default

i have a g reg xr3i the fuel pump is no good so i put in anew one the car wont start or the pump wont prime up i had a look at the cut off switch in the boot but it seems its not ther so wer is it and the relay thanks
Reply
Old Jul 1, 2012 | 06:31 PM
  #9  
coolrunner6969's Avatar
coolrunner6969
Virgin
 
Joined: Jul 2012
Posts: 2
Likes: 0
From: hayes middx
Angry ford escort xr3i

i have a g reg xr3i the fuel pump is no good so i put in a new one the car wont start or the pump wont prime up i had a look at the cut off switch in the boot but it seems its not there so were is it and the relay thanks
Reply
Old Jul 3, 2012 | 12:46 PM
  #10  
martysmartie's Avatar
martysmartie
PassionFord Post Whore!!
iTrader: (1)
 
Joined: Dec 2007
Posts: 8,460
Likes: 103
Default

As said MFI don't have then but EFI do, due to the age yours could be either one, but not having a cut out suggests it may be MFI.

I don't know about the relay, perhaps behind the dash, if not in the fuse box?

MFI has a "Timed" relay which is purple and expensive to buy.

Martin
Reply
Related Topics
Thread
Thread Starter
Forum
Replies
Last Post
JK12
Pictures, video & Photoshop Forum
33
Apr 26, 2021 12:09 PM
DixieTheKid
Ford Sierra/Sapphire/RS500 Cosworth
11
Jun 6, 2020 11:20 AM
155lee
Ford RS Cosworth Parts for Sale
19
Oct 27, 2015 04:55 AM
Focosmitch
Ford RS Cosworth Parts for Sale
15
Oct 7, 2015 03:43 PM
stevierob
Technical help Q & A
2
Sep 7, 2015 07:09 PM




All times are GMT. The time now is 10:38 PM.