Stock XJ Cherokee Tech. All XJ Non-modified/stock questions go here XJ (84-01)
All OEM related XJ specific tech. Examples, no start, general maintenance or anything that's stock.

High oil pressure on gauge

Thread Tools
 
Search this Thread
 
Old 01-25-2013, 11:19 AM
  #1  
Member
Thread Starter
 
dylanXJ99's Avatar
 
Join Date: Apr 2012
Location: Roanoke VA
Posts: 161
Likes: 0
Received 0 Likes on 0 Posts
Year: 99
Model: Cherokee
Engine: 4.0 I6
Default High oil pressure on gauge

My pressure normally operates at like 50 psi give or take and idles around 40..well this morning taking my sister to work(in snow) when turning the ignition on, it would go up to like 75 and then turning engine on and running it would go all the way up to 80 psi and stay there? Checked the oil just cause and it's all looks fine, and good level..y'all think it's just the sensor? And if so where's that located? My dad said it should be this wire plugged into the block somewhere? Is this correct?

Last edited by dylanXJ99; 01-25-2013 at 11:29 AM.
Old 01-25-2013, 11:30 AM
  #2  
Old School CF Moderator
 
Xj88's Avatar
 
Join Date: May 2010
Location: Chattanooga
Posts: 9,652
Likes: 0
Received 3 Likes on 3 Posts
Year: 2001
Model: Cherokee
Engine: 4.0
Default

Sending unit
Old 01-25-2013, 11:38 AM
  #3  
CF Veteran
 
RTorrez1's Avatar
 
Join Date: Sep 2011
Location: Riviera, Texas
Posts: 4,172
Likes: 0
Received 4 Likes on 4 Posts
Year: 1998 Sport
Model: Cherokee
Engine: 4.0
Default

Sending unit took a dump. It's located next to you distributor above the oil filter.
Old 01-25-2013, 11:56 AM
  #4  
Member
Thread Starter
 
dylanXJ99's Avatar
 
Join Date: Apr 2012
Location: Roanoke VA
Posts: 161
Likes: 0
Received 0 Likes on 0 Posts
Year: 99
Model: Cherokee
Engine: 4.0 I6
Default

Hey thanks fellas! I found it and unplugged it and could see where the person before me had changed it(spliced)
But it's ok to drive around on it for the rest of the day until I can change it tomorrow, correct? It's not hurting anything other then giving me an incorrect reading at the gauge right? I just plugged it back up for now
Old 01-25-2013, 01:04 PM
  #5  
CF Veteran
 
RTorrez1's Avatar
 
Join Date: Sep 2011
Location: Riviera, Texas
Posts: 4,172
Likes: 0
Received 4 Likes on 4 Posts
Year: 1998 Sport
Model: Cherokee
Engine: 4.0
Default

Originally Posted by dylanXJ99
Hey thanks fellas! I found it and unplugged it and could see where the person before me had changed it(spliced)
But it's ok to drive around on it for the rest of the day until I can change it tomorrow, correct? It's not hurting anything other then giving me an incorrect reading at the gauge right? I just plugged it back up for now
As long as it's not leaking you will be fine.
Old 01-25-2013, 02:50 PM
  #6  
Herp Derp Jerp
 
salad's Avatar
 
Join Date: Nov 2011
Location: Parham, ON
Posts: 18,251
Likes: 0
Received 13 Likes on 12 Posts
Year: 1999
Model: Cherokee
Engine: 4.0L OBD-II
Default

Spliced? It has a socket in it... the splice could be your problem right there lol.

It does sound like the sending unit is busted, but normally pressure drops when they fail. Something else that can cause pressure problems is a collapsed oil filter. You need to verify the pressure with a mechanical gauge first and see which it is. Though if you have an orange FRAM on there just replace it anyway. If your engine isn't making a bunch of noise the problem isn't catastrophic
Old 01-25-2013, 03:17 PM
  #7  
Senior Member
 
No4x4Yet's Avatar
 
Join Date: Jul 2010
Location: Long Island NY
Posts: 997
Likes: 0
Received 1 Like on 1 Post
Year: 2000
Model: Cherokee
Default

It isnt due to the cold is it?
Old 01-25-2013, 05:12 PM
  #8  
Herp Derp Jerp
 
salad's Avatar
 
Join Date: Nov 2011
Location: Parham, ON
Posts: 18,251
Likes: 0
Received 13 Likes on 12 Posts
Year: 1999
Model: Cherokee
Engine: 4.0L OBD-II
Default

Hang on I just noticed something. 75 PSI *BEFORE* you start the engine? Bad sending unit or sure. Needs to be running to make pressure. Do check the other stuff though.
Old 01-25-2013, 08:39 PM
  #9  
Member
Thread Starter
 
dylanXJ99's Avatar
 
Join Date: Apr 2012
Location: Roanoke VA
Posts: 161
Likes: 0
Received 0 Likes on 0 Posts
Year: 99
Model: Cherokee
Engine: 4.0 I6
Default

Yes. Just turning the key to on position. Like lights and radio come on. Not turning the engine over it goes up to about 75...but yes, it's been spliced some point in time. Lol but has still always worked until now
Old 01-25-2013, 08:45 PM
  #10  
Herp Derp Jerp
 
salad's Avatar
 
Join Date: Nov 2011
Location: Parham, ON
Posts: 18,251
Likes: 0
Received 13 Likes on 12 Posts
Year: 1999
Model: Cherokee
Engine: 4.0L OBD-II
Default

Well, rip into the splice and solder that stuff, make sure its clean. High resistance semi-break can mess with that. If the issue persists just replace the sending unit
Old 01-25-2013, 09:06 PM
  #11  
Member
Thread Starter
 
dylanXJ99's Avatar
 
Join Date: Apr 2012
Location: Roanoke VA
Posts: 161
Likes: 0
Received 0 Likes on 0 Posts
Year: 99
Model: Cherokee
Engine: 4.0 I6
Default

Originally Posted by salad
Well, rip into the splice and solder that stuff, make sure its clean. High resistance semi-break can mess with that. If the issue persists just replace the sending unit
Your words are much appreciated
Related Topics
Thread
Thread Starter
Forum
Replies
Last Post
t.mcginley.jr
Jeep Builds
105
01-31-2024 04:58 PM
Expedition_XJ
Cherokee Chat
25
05-24-2018 11:40 AM
MidwestNick
Stock XJ Cherokee Tech. All XJ Non-modified/stock questions go here
10
02-28-2016 02:05 AM
Dannymac1216
Stock XJ Cherokee Tech. All XJ Non-modified/stock questions go here
13
09-08-2015 06:28 AM
Montana5991
Stock XJ Cherokee Tech. All XJ Non-modified/stock questions go here
2
09-02-2015 09:23 AM

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


Quick Reply: High oil pressure on gauge



All times are GMT -5. The time now is 03:51 AM.