Oil Pressure - Jaguar Forums - Jaguar Enthusiasts Forum

XJS ( X27 ) 1975 - 1996 3.6 4.0 5.3 6.0

Oil Pressure

Thread Tools Search this Thread
Old 04-11-2012, 12:45 PM
mrtalkradio's Avatar
Senior Member
Thread Starter
Join Date: Aug 2010
Location: New Hampshire
Posts: 863
Thanked 101 Times in 89 Posts
Default Oil Pressure

Here are my readings from my gauge while the car is at it's "normal" operating temp. 60 degrees outside, car has been running for over an hour, highway driving at 80mph.
First pic is while driving, second is stopped a light. It seems way low, notice my temp gauge never gets to "N" either. The car sounds great though, the oil pressure does go up while driving. At first cold start of the day it goes to 6. How's yours?
Attached Thumbnails
Oil Pressure-op2.jpg   Oil Pressure-op1.jpg  
Reply With Quote
Old 04-11-2012, 05:08 PM
Sarc's Avatar
Veteran Member
Join Date: Oct 2008
Location: San Jose, CA, USA
Posts: 1,906
Thanked 494 Times in 323 Posts

I have less oil pressure than you (My gauge will read 0 at warm idle, but the idiot light doesn't come on)

I have more temperature than you (My gauge gets up to the middle and stays there, mostly with the help of the electric fan cutting in and out)

I have an oil temperature gauge with the sender in the sump. It's quite interesting watching it, for example I can have low oil temps while driving at speed, but as soon as I stop, the temperature goes up quite rapidly. I also note it takes a lot longer for the oil to come up to temperature compared to the water
Reply With Quote
Old 04-11-2012, 05:21 PM
Senior Member
Join Date: May 2011
Location: Kansas
Posts: 186
Thanked 4 Times in 4 Posts

Looks about like mine. When it gets warm at idle it will go to near 0 but that seems to be pretty common and not an indicator of trouble.
Reply With Quote
Old 04-11-2012, 06:28 PM
M90power's Avatar
Veteran Member
Join Date: Oct 2011
Location: WV
Posts: 1,738
Thanked 61 Times in 57 Posts

mine gets pretty low at times, but i dont worry about it since its SOHC.
Reply With Quote
Old 04-11-2012, 08:28 PM
Copronymous's Avatar
Join Date: Mar 2012
Location: Texas
Posts: 45
Thanked 1 Time in 1 Post

IIRC, the manual states oil pressure should be 40psi at 3,000 RPM.
Reply With Quote
Old 04-11-2012, 08:34 PM
Veteran Member
Join Date: Mar 2008
Location: Pacific Northwest USA
Posts: 17,247
Thanked 5,187 Times in 3,962 Posts

Low oil pressure when warm and at idle is normal for the V12s...maybe 5-8 psi or so.

As for coolant temp gauges.....

At some point Jaguar when to a "fixed reading" temp sending unit that always reads at the exact same spot on the guage unless the coolant get wayyyyyy hot... then the needle moves over. Not sure when the change was made on the assembly line but the later type sender is often sold in place of the original.

Later Jaguar did the same thing with oil pressure gauges

Reply With Quote
The Following User Says Thank You to Doug For This Useful Post:
Copronymous (04-11-2012)
Old 04-12-2012, 09:45 PM
Veteran Member
Join Date: Jul 2010
Location: Tallahassee, FL
Posts: 2,093
Thanked 568 Times in 463 Posts

doug i think thats the old one. Idk if its a set temp or more to do with the thermostats and second fan kicking on. Mine will get pretty high and then something will happen and it will drop like a rock.

Its a bad idea though because if you are just on the cusp of whatever the temp is it will stay up or jump back and forth.

but I suppose if that high temp is still safe and a "good point" to begin lowering the temp and not some kind of emergency thing it is fine.

all in my head
Reply With Quote
Old 04-13-2012, 05:18 PM
Sarc's Avatar
Veteran Member
Join Date: Oct 2008
Location: San Jose, CA, USA
Posts: 1,906
Thanked 494 Times in 323 Posts


I was also concerned that the temp gauge does move around quite a bit.

I fitted an idiot light in the center console that comes on when my electric fan starts running. It is a cool blue LED..... it's blueness calms me down :-)

I'm not worried about engine temps when the car is running now, I am more concerned about heat soak when you switch off. Even with the electric fan running on I still worry. There is a different specc'd temp switch for the electric fan from FasterJags (I think it changeover point goes from 82deg to 77deg). I'm going to try this to see if it does run the fan on for longer and hopefully stop the heat soak a bit
Reply With Quote

Related Topics
Thread Thread Starter Forum Replies Last Post
99 XK8 convertible - electrical issues 99xk8guy XK8 / XKR ( X100 ) 14 07-03-2016 10:18 AM
AJ6 to AJ16 swap? jerry_hoback XJ40 ( XJ81 ) 6 09-13-2015 08:48 PM
collapsing radiator hose mhamilton XJ XJ6 / XJ8 / XJR ( X350 & X358 ) 1 09-12-2015 04:21 PM
Transgo 5HP25 PR Valve bamforp XK8 / XKR ( X100 ) 4 09-07-2015 04:37 AM
Low Oil Pressure? giandanielxk8 XK8 / XKR ( X100 ) 7 09-06-2015 08:21 PM

1992, 92, dash, gauge, gauges, idle, jag, jaguar, low, oil, pressure, readings, reads, v12, xjs

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

Advanced Search

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are Off
Pingbacks are Off
Refbacks are Off

Featured Sponsors
Vendor Directory

All times are GMT -5. The time now is 05:52 AM.

JAGUAR and its logo are the registered trademarks of Jaguar Cars Limited. Jaguar Cars Limited is not affiliated with JaguarForums.com. We are a participant in the Amazon Services LLC Associates Program, an affiliate advertising program designed to provide a means for us to earn fees by linking to Amazon.com and affiliated sites.
  • Ask a Question
    Get answers from community experts
Question Title:
Your question will be posted in: