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.

oil pressure

Old 02-13-2009, 08:06 PM
  #1  
Junior Member
Thread Starter
 
1997cherokee's Avatar
 
Join Date: Jan 2009
Posts: 97
Likes: 0
Received 0 Likes on 0 Posts
Model: Cherokee
Default oil pressure

So when I start her up cold have over 40 psi pressure then driving stays at 40 but when hot and idle will drop to like 20 or slightly under then quickly pick up when I touch the throttle. Is this normal have only 57k mile son her and just had the oil changed.


Just bought her so unsure of what is normal.

Thanks guys
Old 02-13-2009, 08:11 PM
  #2  
CF Veteran
 
BuckB91XJ's Avatar
 
Join Date: Nov 2008
Location: Oak Harbor, WA.
Posts: 6,989
Likes: 0
Received 4 Likes on 4 Posts
Year: 1987
Model: Cherokee
Engine: 4.0 liter RENIX I-6, DIY Cold Air Intake, 2.5 FM Exhaust, 3 Core Radiator
Default

20-30 at idle and anything close to 40 at hwy. speed is A-OK.
Old 02-13-2009, 08:13 PM
  #3  
CF Veteran
 
REWSTER's Avatar
 
Join Date: Sep 2008
Location: HAMMOND IN
Posts: 2,418
Likes: 0
Received 0 Likes on 0 Posts
Year: 2000
Model: Cherokee
Engine: 4.0
Default

normal
Old 02-13-2009, 10:34 PM
  #4  
Member
 
They call me cowboy's Avatar
 
Join Date: Jan 2009
Posts: 140
Likes: 0
Received 0 Likes on 0 Posts
Year: 2001
Model: Cherokee
Engine: 4.0
Default

mine goes up to 60-80 at acceleration, at that pressure all my seal should be leaking. I am sure my sender is going bad. Thoughts?
Old 02-14-2009, 12:16 AM
  #5  
CF Veteran
 
BuckB91XJ's Avatar
 
Join Date: Nov 2008
Location: Oak Harbor, WA.
Posts: 6,989
Likes: 0
Received 4 Likes on 4 Posts
Year: 1987
Model: Cherokee
Engine: 4.0 liter RENIX I-6, DIY Cold Air Intake, 2.5 FM Exhaust, 3 Core Radiator
Default

Bad or plugged with sludge
Old 02-14-2009, 12:58 AM
  #6  
CF Veteran
 
a1racer's Avatar
 
Join Date: Feb 2009
Location: socal
Posts: 7,244
Likes: 0
Received 0 Likes on 0 Posts
Year: 2000
Model: Cherokee
Engine: 4.0
Default

the Manuel says about 13 to 15 pounds at idle is OK and you should have 40 while at speed
Old 02-14-2009, 08:38 PM
  #7  
Member
 
They call me cowboy's Avatar
 
Join Date: Jan 2009
Posts: 140
Likes: 0
Received 0 Likes on 0 Posts
Year: 2001
Model: Cherokee
Engine: 4.0
Default

I figured... Good thing I work at a parts store, now to get them to pay me more......
Old 02-14-2009, 09:11 PM
  #8  
Seasoned Member
 
mycherokee1989's Avatar
 
Join Date: Jan 2009
Posts: 345
Likes: 0
Received 1 Like on 1 Post
Year: 1989
Model: Cherokee
Engine: inline 6 4.0L
Default

Its sounds fine. When the oil warms up with the engine the pressure will go down compared to when cold.
They Call Me Cowboy: Sounds like you have a bit of a problem going on...
Related Topics
Thread
Thread Starter
Forum
Replies
Last Post
Theodore Chaney
Stock Grand Cherokee Tech. All ZJ/WJ/WK Non-modified/stock questions go here!
5
09-05-2018 11:59 AM
tristanp
Stock XJ Cherokee Tech. All XJ Non-modified/stock questions go here
2
09-15-2015 04:06 PM
Blackxj51
Stock XJ Cherokee Tech. All XJ Non-modified/stock questions go here
22
09-13-2015 06:06 PM
15XJ
Stock XJ Cherokee Tech. All XJ Non-modified/stock questions go here
7
09-10-2015 11:17 PM

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

Thread Tools
Search this Thread
Quick Reply: oil pressure



All times are GMT -5. The time now is 02:23 AM.