XJ XJ6 / XJR6 ( X300 ) 1995-1997

Please help. 96 XJR 6cyl wont start with key but starts directly from the starter.

Thread Tools
 
Search this Thread
 
  #21  
Old 12-29-2011, 01:48 PM
sparkenzap's Avatar
Veteran Member
Join Date: Nov 2007
Location: atlanta ga
Posts: 4,502
Received 1,064 Likes on 867 Posts
Default

Languid:
Back to your "conservation of power" equation for the fan. Your "something doesn't seem right about that" is that the power (watts) is not equal in both conditions. In series, the fans are essentially running at half speed each. The power conumed by a fan is proportional to the cube of the speed. So, fans operating at twice the speed are consuming approximately 8 times the power. (therefore, fans running at half speed consume 1/8 he power of full speed)

Vic:
While you may very well be testing the relay circuit to determine "powerei s running through it", that does not really fully describe anything. If you are accurate that the relay is closing, AND has power on its output terminal, THEN your problem is simply the solenoid or the power wiring for the starter. However, if that was the case, the original "jumping" to the starter would not have worked. Understand, it is hard enough to diagnose something not standing in front of it, so a very accurate description of the exact conditions will help a lot.

So, When the key is turned to the start position, do you read 12 volts to ground at the white wire at the relay? How about at the white wire at the solenoid? If so, does the solenoid click? With these answers, you are very close to an accurate diagnosis!
 

Last edited by sparkenzap; 12-29-2011 at 01:57 PM.
  #22  
Old 12-30-2011, 07:16 AM
Languid's Avatar
Senior Member
Join Date: Dec 2011
Location: Petrie, Qld Australia
Posts: 215
Received 30 Likes on 24 Posts
Default

Sicfc3s,

Put a multimeter or test light across the termials for the relay checking both the power cct that drives the relay (the ident should be on the relay itself showing the correct pins), and the feed contact for the solenoid. If power & earth are present, swap the relay with another such as the A/c relay just to make sure the relay itself isn't 'kaput'. If those things check out OK, then it is either the solenoid, or the BeCM thinks you're trying to steal its precious charge and giving you the finger. It is unlikely that the BeCM is crook, just has an alarm signal and thinks you should be in Wandsworth Prison, not in the driver's seat. It will need to be reset, and that needs a workshop with OBD II diagnostics.

Cheers,

Languid
 
  #23  
Old 12-30-2011, 07:46 AM
sparkenzap's Avatar
Veteran Member
Join Date: Nov 2007
Location: atlanta ga
Posts: 4,502
Received 1,064 Likes on 867 Posts
Default

I really don't mean to be picky or start a controversy, BUT "across the termials" is either wrong, innaccurate, or not clear, depending on how yiou want to characterize it. The tests in question need to be done from each terminal to an earth (meaning frame ground) point.
 
  #24  
Old 12-30-2011, 08:08 AM
Doug's Avatar
Veteran Member
Join Date: Mar 2008
Location: Pacific Northwest USA
Posts: 24,894
Received 10,952 Likes on 7,196 Posts
Default

Originally Posted by Languid
Sicfc3s,

or the BeCM thinks you're trying to steal its precious charge and giving you the finger. It is unlikely that the BeCM is crook, just has an alarm signal and thinks you should be in Wandsworth Prison, not in the driver's seat. It will need to be reset, and that needs a workshop with OBD II diagnostics.



Are you referring to the "Engine Immobilization" feature of the security system?

If so, it isn't applicable in this case, as USA market cars did not have the feature.

Not picking nits. Just trying to avoid strolling down non-existent paths :-)


Cheers
DD
 
  #25  
Old 12-30-2011, 06:47 PM
Sikfc3s's Avatar
Senior Member
Thread Starter
Join Date: Nov 2011
Location: Lakeland, FL
Posts: 184
Received 7 Likes on 6 Posts
Default

I used the test light on both sidrs of the engine bay on the different fuse boxes and they all had power, so that woulf mean that the relay is ok right? The relay wad then switched around.
 
  #26  
Old 12-30-2011, 08:24 PM
sparkenzap's Avatar
Veteran Member
Join Date: Nov 2007
Location: atlanta ga
Posts: 4,502
Received 1,064 Likes on 867 Posts
Default

Back in Post #13, Doug gave you a very explicit, well researched test procedure. I suggest you follow his advice and report back if it is not clear to you what the results mean. In fact, report back if you need more basic clarified instructions and we will gladly help. Otherwise, just keep poking about and you MIGHT find something. Even a blind squirrel finds an acorn from time to time.
 

Last edited by sparkenzap; 12-30-2011 at 09:01 PM.
Related Topics
Thread
Thread Starter
Forum
Replies
Last Post
JarodL
F-Type ( X152 )
63
03-07-2024 01:39 AM
Sprayall
S-Type / S type R Supercharged V8 ( X200 )
13
05-30-2021 08:13 AM
Sprayall
New Member Area - Intro a MUST
8
09-03-2015 07:49 PM
XFR_Gold
XF and XFR ( X250 )
2
09-02-2015 12:24 PM

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


Quick Reply: Please help. 96 XJR 6cyl wont start with key but starts directly from the starter.



All times are GMT -5. The time now is 01:56 PM.