Oil pressure light
#1
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Hi. Now im driving in the dark here in the uk i have noticed my oil pressure light is always on.
It never goes out when the ignition is off it still stays a light. Here is 2 photos of the light
![Name: A791C6DF-D796-4A11-AD5B-20B5EB382C32_zpssekxkizk.jpg
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![Name: F0C81514-A6AB-42DA-84D6-4C10246BA115_zpsoki815xy.jpg
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The light never goes out when you start the car it goes bright then after a second when the pressure goes to half way on the dial it dims to the other picture i took.
Any help
It never goes out when the ignition is off it still stays a light. Here is 2 photos of the light
![Name: A791C6DF-D796-4A11-AD5B-20B5EB382C32_zpssekxkizk.jpg
Views: 399
Size: 115.3 KB](https://www.jaguarforums.com/forum/attachments/xk8-xkr-x100-17/156092d1501212601-oil-pressure-light-a791c6df-d796-4a11-ad5b-20b5eb382c32_zpssekxkizk.jpg)
![Name: F0C81514-A6AB-42DA-84D6-4C10246BA115_zpsoki815xy.jpg
Views: 304
Size: 108.6 KB](https://www.jaguarforums.com/forum/attachments/xk8-xkr-x100-17/156093d1501212601-oil-pressure-light-f0c81514-a6ab-42da-84d6-4c10246ba115_zpsoki815xy.jpg)
The light never goes out when you start the car it goes bright then after a second when the pressure goes to half way on the dial it dims to the other picture i took.
Any help
#2
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In both pictures the gauge needle is setting on 0 indicating that you have no oil pressure or a failed sensor. The sensor is only a contact closure at about 7 psi. With the contact closure required to extinguish the red light I would suggest that you resolve that before tearing the instrument panel apart.
The second picture might indicate that the light stays on with the engine off as the VM is at O. Is that the issue?
Some oil filters that are sold for the XK8/R do not have a back flow valve allowing the oil to drain back into the engine when off. That causes the oil pressure to stay at 0 psi for several seconds before the filter fills back up. Does that relate to what you are seeing?
The second picture might indicate that the light stays on with the engine off as the VM is at O. Is that the issue?
Some oil filters that are sold for the XK8/R do not have a back flow valve allowing the oil to drain back into the engine when off. That causes the oil pressure to stay at 0 psi for several seconds before the filter fills back up. Does that relate to what you are seeing?
Last edited by test point; 12-09-2014 at 05:21 AM.
#4
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Any car that has the filter mounted in other than the open end up position should have a back flow valve. The issue is not Jaguar specific. If you had your oil changed and it takes 5-15 seconds for the oil gauge to come up then an incorrect filter was installed.
No list of filters with/without the valve exists that I am aware of but the box should say it does have one. If there is no mention then I would assume that it doesn't.
No list of filters with/without the valve exists that I am aware of but the box should say it does have one. If there is no mention then I would assume that it doesn't.
#5
#6
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In both pictures the gauge needle is setting on 0 indicating that you have no oil pressure or a failed sensor. The sensor is only a contact closure at about 7 psi. With the contact closure required to extinguish the red light I would suggest that you resolve that before tearing the instrument panel apart.
The second picture might indicate that the light stays on with the engine off as the VM is at O. Is that the issue?
Some oil filters that are sold for the XK8/R do not have a back flow valve allowing the oil to drain back into the engine when off. That causes the oil pressure to stay at 0 psi for several seconds before the filter fills back up. Does that relate to what you are seeing?
The second picture might indicate that the light stays on with the engine off as the VM is at O. Is that the issue?
Some oil filters that are sold for the XK8/R do not have a back flow valve allowing the oil to drain back into the engine when off. That causes the oil pressure to stay at 0 psi for several seconds before the filter fills back up. Does that relate to what you are seeing?
basically what im trying to say is the light is always dim without the keys in or without the engine running then when i turn the ignition on it turns bright red then when i start the engine it goes back dim about 1 second after when the oil pressure is at halfway.
is there a ground wire somewhere that is making the light stay on, thats what im thinking? its a worrying light to have on
#7
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Well the oil pressure gauge is nothing but a check light also, it does not read actual oil pressure. The oil pressure gauge is showing what the ECM thinks is the oil pressure. There is no oil pressure sending unit only an on/off switch. The fact that the needle moves at all proves that you have oil pressure and the change in light brightness seems to verify this.
My guess is you have a short somewhere I the oil light circuit, have not looked at the electrician diagram but most of the indicator lights short to ground to come on.
My guess is you have a short somewhere I the oil light circuit, have not looked at the electrician diagram but most of the indicator lights short to ground to come on.
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#8
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Hi, the pressure is fine and goes half way about 1 second after i start the engine and the light then goes to the dim light. In both those pictures the engine isnt running.
basically what im trying to say is the light is always dim without the keys in or without the engine running then when i turn the ignition on it turns bright red then when i start the engine it goes back dim about 1 second after when the oil pressure is at halfway.
is there a ground wire somewhere that is making the light stay on, thats what im thinking? its a worrying light to have on
basically what im trying to say is the light is always dim without the keys in or without the engine running then when i turn the ignition on it turns bright red then when i start the engine it goes back dim about 1 second after when the oil pressure is at halfway.
is there a ground wire somewhere that is making the light stay on, thats what im thinking? its a worrying light to have on
If you decide to unplug any connector, be sure to disconnect the battery first.
#9
#10
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The Center veneer pops off fairly easily, you will then have access to the 3 gauge cluster after removing a few screws.. start there and check the wires, it'll take you 15 mins. The drivers dash takes a bit longer but not much.. RevSam has videos on both. IT's really easy (compared to most jag work)
Edited to add link for center dash:
Here's a link to Sams Youtube channel with many maint videos
https://www.youtube.com/user/sam1174
Edited to add link for center dash:
Here's a link to Sams Youtube channel with many maint videos
https://www.youtube.com/user/sam1174
Last edited by jamdmyers; 12-12-2014 at 06:45 AM.
#11
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<embed width="600" height="361" type="application/x-shockwave-flash" allowFullscreen="true" allowNetworking="all" wmode="transparent" src="Www.static.photobucket.com/player.swf" flashvars="file=http%3A%2F%2Fvid1015.photobucket.c om%2Falbums%2Faf279%2Fsteeevo%2FMobile%2520Uploads %2F973322B3-41E7-4839-B764-ED12E9A1A6E1_zps0pxiukeu.mp4">
Last edited by steeevo; 01-29-2015 at 04:03 AM.
#13
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When you post web links to the forum, leave out the http://
http://www.s1015.photobucket.com/use...iukeu.mp4.html
With the link you posted above, replace the http:// with www. to make the link work.
Graham
#14
#15
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Hi there
Old thread I know but my 2005 xkr has exactly the same issue... and I can't find any recent topic about this particular problem.
Steevo, if you are still around, did you manage to fix this on your car and how please?
On my car, it does exactly the same : the oil light stays on , even if the car is shutdown, door locked etc.
I left the car at a jaguar dealer shop, they tested the wiring from the sensor and said it is ok. They think the problem might be from the gauge itself or the gauge wiring behind the dashboard. They do not really know.
Did anyone else experimented this kind of problem ? Any ideas ?
Thanks,
Antonin
Old thread I know but my 2005 xkr has exactly the same issue... and I can't find any recent topic about this particular problem.
Steevo, if you are still around, did you manage to fix this on your car and how please?
On my car, it does exactly the same : the oil light stays on , even if the car is shutdown, door locked etc.
I left the car at a jaguar dealer shop, they tested the wiring from the sensor and said it is ok. They think the problem might be from the gauge itself or the gauge wiring behind the dashboard. They do not really know.
Did anyone else experimented this kind of problem ? Any ideas ?
Thanks,
Antonin
#16
![Default](/forum/images/icons/icon1.gif)
Hi there
Old thread I know but my 2005 xkr has exactly the same issue... and I can't find any recent topic about this particular problem.
Steevo, if you are still around, did you manage to fix this on your car and how please?
On my car, it does exactly the same : the oil light stays on , even if the car is shutdown, door locked etc.
I left the car at a jaguar dealer shop, they tested the wiring from the sensor and said it is ok. They think the problem might be from the gauge itself or the gauge wiring behind the dashboard. They do not really know.
Did anyone else experimented this kind of problem ? Any ideas ?
Thanks,
Antonin
Old thread I know but my 2005 xkr has exactly the same issue... and I can't find any recent topic about this particular problem.
Steevo, if you are still around, did you manage to fix this on your car and how please?
On my car, it does exactly the same : the oil light stays on , even if the car is shutdown, door locked etc.
I left the car at a jaguar dealer shop, they tested the wiring from the sensor and said it is ok. They think the problem might be from the gauge itself or the gauge wiring behind the dashboard. They do not really know.
Did anyone else experimented this kind of problem ? Any ideas ?
Thanks,
Antonin
#17
![Default](/forum/images/icons/icon1.gif)
Hi there
Old thread I know but my 2005 xkr has exactly the same issue... and I can't find any recent topic about this particular problem.
Steevo, if you are still around, did you manage to fix this on your car and how please?
On my car, it does exactly the same : the oil light stays on , even if the car is shutdown, door locked etc.
I left the car at a jaguar dealer shop, they tested the wiring from the sensor and said it is ok. They think the problem might be from the gauge itself or the gauge wiring behind the dashboard. They do not really know.
Did anyone else experimented this kind of problem ? Any ideas ?
Thanks,
Antonin
Old thread I know but my 2005 xkr has exactly the same issue... and I can't find any recent topic about this particular problem.
Steevo, if you are still around, did you manage to fix this on your car and how please?
On my car, it does exactly the same : the oil light stays on , even if the car is shutdown, door locked etc.
I left the car at a jaguar dealer shop, they tested the wiring from the sensor and said it is ok. They think the problem might be from the gauge itself or the gauge wiring behind the dashboard. They do not really know.
Did anyone else experimented this kind of problem ? Any ideas ?
Thanks,
Antonin
#18
![Default](/forum/images/icons/icon1.gif)
I recently bought a minor instrument pack (the three gauges) quite cheaply on ebay. If you can find one cheaply enough it's easy enough to swap them over - at least then you will know if the fault is in the minor instrument pack or the main gauges. It can only be one or the other and if you are lucky its the smaller gauges. The fault is likely a failed transistor or mosfet that drives the light.
The minor instrument pack is the cluster with the 3 jauges ?
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