XK8 / XKR ( X100 ) 1996 - 2006
Sponsored by:
Sponsored by:

Will a failing fuel pump throw error codes?

Thread Tools
 
Search this Thread
 
  #1  
Old 06-11-2015, 02:19 AM
worrasf's Avatar
Senior Member
Thread Starter
Join Date: Aug 2013
Location: West Yorkshire
Posts: 420
Received 149 Likes on 88 Posts
Default Will a failing fuel pump throw error codes?

For the first time ever my 2001 XKR took several "cranks" to fire this morning (It felt like fuel starvation or no spark) and displayed "engine failsafe mode warning". Turned ignition off and re-tried and started first time as usual. No error codes and no pending error codes. Ran perfectly on my trip into work and had been running perfectly before.

Just wondering if this might be a symptom of a failing fuel pump?

Steve
 
  #2  
Old 06-11-2015, 03:01 AM
test point's Avatar
Veteran Member
Join Date: Mar 2008
Location: Ellijay
Posts: 5,385
Received 1,110 Likes on 932 Posts
Default

There are no codes directly associated with the pressurized fuel system. The 'R' cars have two fuel pumps and when one fails you at least get a little warning of impending complete failure. You describe such a symptom.
 
The following users liked this post:
worrasf (06-11-2015)
  #3  
Old 06-11-2015, 03:11 AM
worrasf's Avatar
Senior Member
Thread Starter
Join Date: Aug 2013
Location: West Yorkshire
Posts: 420
Received 149 Likes on 88 Posts
Default

Thanks for confirming my suspicions. I'll get them checked/replaced
 
  #4  
Old 06-11-2015, 03:11 AM
dibbit's Avatar
Veteran Member
Join Date: Oct 2010
Location: Spain
Posts: 1,207
Received 460 Likes on 332 Posts
Default

Have you seen the thread that details how to test for a failed pump on the XKR?

https://www.jaguarforums.com/forum/x...el-pump-85882/
 
The following users liked this post:
worrasf (06-11-2015)
  #5  
Old 06-11-2015, 03:50 AM
neatcat's Avatar
Member
Join Date: Sep 2012
Location: Germany
Posts: 86
Received 25 Likes on 19 Posts
Default

From my experience, a bad primary pump on the 4.0 XKR causes at least heavy engine 'shudder'. The lack of fuel-pressure may then eventualy cause error messages. The pumps themself are not monitored by the ECU, only the relais, that drive them.

But for testing purposes, you can exchange the role of the 2 pumps by exchanging the pins on the 'last-before-fuel-tank' connector (sorry, don't know how to describe better). I did this on my MY2000 to get the car running with a failed primary pump.

Good luck

Wolf
 
  #6  
Old 06-11-2015, 06:29 AM
worrasf's Avatar
Senior Member
Thread Starter
Join Date: Aug 2013
Location: West Yorkshire
Posts: 420
Received 149 Likes on 88 Posts
Default

I pulled the primary and secondary pump relays as per WhiteXKR's post and had no issues. Car started first turn of the key with each pump disconnected.

I'm thinking I just had a "glitch". To be sure I've spoken with my trusted Indy mechanic who did my chain tensioners and he can replace the pumps if needed. I'm just going to wait and see what happens. If it happens again I'll just get them replaced to be on the safe side.
 
Related Topics
Thread
Thread Starter
Forum
Replies
Last Post
Sprayall
S-Type / S type R Supercharged V8 ( X200 )
13
05-30-2021 08:13 AM
dsnyder586
XJ XJ8 / XJR ( X308 )
55
04-04-2019 02:38 PM
TexasCat
New Member Area - Intro a MUST
8
09-08-2015 04:36 AM
deanh
XF and XFR ( X250 )
3
09-06-2015 08:20 PM
Sprayall
New Member Area - Intro a MUST
8
09-03-2015 07:49 PM

Currently Active Users Viewing This Thread: 1 (0 members and 1 guests)
 


Quick Reply: Will a failing fuel pump throw error codes?



All times are GMT -5. The time now is 03:08 PM.