Oil gauge on my 1999 XJ is sitting at 80psi when the engine is idling,
cruising, or even if the engine is off and the key is just turned one
click. Gauge used to work fine with about 30-35 psi at idle and 40psi
cruising. Fresh durablend oil as always.

Could it be possible that the oil pressure REALLY IS at 80 psi for some
reason? How can I check it? If its just the pressure sensor, how hard
is it to replace?

Thanks!!!

 

It is likely the sensor has gone bad or the wire has just fallen off it
and is hitting on something. I 'think' that a short on the wire will
pin the gauge at 80 so you might want to follow the wire along for a
while. Again I 'think' the wire is purple.

The sensor is easy to change. It just unscrews. If there is oil
seeping out the top it is dead for sure, but to test you can pull the
wire off and see what the gauge does. Then ground the wire and see what
the gauge does.

Mike
86/00 CJ7 Laredo, 33x9.5 BFG Muds, 'glass nose to tail in '00
88 Cherokee 235 BFG AT's
Canadian Off Road Trips Photos: Non members can still view!
Jan/06 http://www.imagestation.com/album/pi...?id=2115147590
(More Off Road album links at bottom of the view page)

footballgod214@hotmail.com wrote:
>
> Oil gauge on my 1999 XJ is sitting at 80psi when the engine is idling,
> cruising, or even if the engine is off and the key is just turned one
> click. Gauge used to work fine with about 30-35 psi at idle and 40psi
> cruising. Fresh durablend oil as always.
>
> Could it be possible that the oil pressure REALLY IS at 80 psi for some
> reason? How can I check it? If its just the pressure sensor, how hard
> is it to replace?
>
> Thanks!!!

 

It is likely the sensor has gone bad or the wire has just fallen off it
and is hitting on something. I 'think' that a short on the wire will
pin the gauge at 80 so you might want to follow the wire along for a
while. Again I 'think' the wire is purple.

The sensor is easy to change. It just unscrews. If there is oil
seeping out the top it is dead for sure, but to test you can pull the
wire off and see what the gauge does. Then ground the wire and see what
the gauge does.

Mike
86/00 CJ7 Laredo, 33x9.5 BFG Muds, 'glass nose to tail in '00
88 Cherokee 235 BFG AT's
Canadian Off Road Trips Photos: Non members can still view!
Jan/06 http://www.imagestation.com/album/pi...?id=2115147590
(More Off Road album links at bottom of the view page)

footballgod214@hotmail.com wrote:
>
> Oil gauge on my 1999 XJ is sitting at 80psi when the engine is idling,
> cruising, or even if the engine is off and the key is just turned one
> click. Gauge used to work fine with about 30-35 psi at idle and 40psi
> cruising. Fresh durablend oil as always.
>
> Could it be possible that the oil pressure REALLY IS at 80 psi for some
> reason? How can I check it? If its just the pressure sensor, how hard
> is it to replace?
>
> Thanks!!!

 

It is likely the sensor has gone bad or the wire has just fallen off it
and is hitting on something. I 'think' that a short on the wire will
pin the gauge at 80 so you might want to follow the wire along for a
while. Again I 'think' the wire is purple.

The sensor is easy to change. It just unscrews. If there is oil
seeping out the top it is dead for sure, but to test you can pull the
wire off and see what the gauge does. Then ground the wire and see what
the gauge does.

Mike
86/00 CJ7 Laredo, 33x9.5 BFG Muds, 'glass nose to tail in '00
88 Cherokee 235 BFG AT's
Canadian Off Road Trips Photos: Non members can still view!
Jan/06 http://www.imagestation.com/album/pi...?id=2115147590
(More Off Road album links at bottom of the view page)

footballgod214@hotmail.com wrote:
>
> Oil gauge on my 1999 XJ is sitting at 80psi when the engine is idling,
> cruising, or even if the engine is off and the key is just turned one
> click. Gauge used to work fine with about 30-35 psi at idle and 40psi
> cruising. Fresh durablend oil as always.
>
> Could it be possible that the oil pressure REALLY IS at 80 psi for some
> reason? How can I check it? If its just the pressure sensor, how hard
> is it to replace?
>
> Thanks!!!

 

footballgod214@hotmail.com wrote:
> Oil gauge on my 1999 XJ is sitting at 80psi when the engine is idling,
> cruising, or even if the engine is off and the key is just turned one
> click. Gauge used to work fine with about 30-35 psi at idle and 40psi
> cruising. Fresh durablend oil as always.
>
> Could it be possible that the oil pressure REALLY IS at 80 psi for some
> reason? How can I check it? If its just the pressure sensor, how hard
> is it to replace?
>
> Thanks!!!
>

How can you have 80 PSI with the motor off?

Gauge or sensor malfunction. It could also be a loose
wire, connector or ground. Good luck.

 

footballgod214@hotmail.com wrote:
> Oil gauge on my 1999 XJ is sitting at 80psi when the engine is idling,
> cruising, or even if the engine is off and the key is just turned one
> click. Gauge used to work fine with about 30-35 psi at idle and 40psi
> cruising. Fresh durablend oil as always.
>
> Could it be possible that the oil pressure REALLY IS at 80 psi for some
> reason? How can I check it? If its just the pressure sensor, how hard
> is it to replace?
>
> Thanks!!!
>

How can you have 80 PSI with the motor off?

Gauge or sensor malfunction. It could also be a loose
wire, connector or ground. Good luck.

 

footballgod214@hotmail.com wrote:
> Oil gauge on my 1999 XJ is sitting at 80psi when the engine is idling,
> cruising, or even if the engine is off and the key is just turned one
> click. Gauge used to work fine with about 30-35 psi at idle and 40psi
> cruising. Fresh durablend oil as always.
>
> Could it be possible that the oil pressure REALLY IS at 80 psi for some
> reason? How can I check it? If its just the pressure sensor, how hard
> is it to replace?
>
> Thanks!!!
>

How can you have 80 PSI with the motor off?

Gauge or sensor malfunction. It could also be a loose
wire, connector or ground. Good luck.

 

footballgod214 did pass the time by typing:
> Oil gauge on my 1999 XJ is sitting at 80psi when the engine is idling,
> cruising, or even if the engine is off and the key is just turned one
> click. Gauge used to work fine with about 30-35 psi at idle and 40psi
> cruising. Fresh durablend oil as always.
>
> Could it be possible that the oil pressure REALLY IS at 80 psi for some
> reason? How can I check it? If its just the pressure sensor, how hard
> is it to replace?

Put the sensors wire back on.

If it's the I6 your sensor is located on the oil filter block.

--
DougW

 

footballgod214 did pass the time by typing:
> Oil gauge on my 1999 XJ is sitting at 80psi when the engine is idling,
> cruising, or even if the engine is off and the key is just turned one
> click. Gauge used to work fine with about 30-35 psi at idle and 40psi
> cruising. Fresh durablend oil as always.
>
> Could it be possible that the oil pressure REALLY IS at 80 psi for some
> reason? How can I check it? If its just the pressure sensor, how hard
> is it to replace?

Put the sensors wire back on.

If it's the I6 your sensor is located on the oil filter block.

--
DougW

 

footballgod214 did pass the time by typing:
> Oil gauge on my 1999 XJ is sitting at 80psi when the engine is idling,
> cruising, or even if the engine is off and the key is just turned one
> click. Gauge used to work fine with about 30-35 psi at idle and 40psi
> cruising. Fresh durablend oil as always.
>
> Could it be possible that the oil pressure REALLY IS at 80 psi for some
> reason? How can I check it? If its just the pressure sensor, how hard
> is it to replace?

Put the sensors wire back on.

If it's the I6 your sensor is located on the oil filter block.

--
DougW