Oil Pressure High - Jeep Cherokee Forum
Jeep Cherokee Forum

Go Back   Jeep Cherokee Forum > Technical Discussion > OEM Cherokee Tech
Log In 
Search


Oil Pressure High

Reply
 
 
 
 
Thread Tools Search this Thread
Old 05-04-2012, 02:29 PM   #1
Newbie
 
Join Date: May 2012
Location: Northern California
Posts: 2

View shipman's Photo Album My Photos
2000 Cherokee
Default Oil Pressure High

I have a 2000 Cherokee Sport 4.0L w/ 189k miles and recently (past couple weeks) the oil pressure gauge has been maxing out at 80psi. When the engine is cold it is constantly maxed out but once it warms up the pressure drops to ~50psi when stopped and idling then shoots back to 80 as soon as you start giving it gas. I just changed the oil and filter last weekend and it has the correct oil level. I was thinking it could possibly be a defective gauge but I'm not sure if that could be the case seeing as the pressure drops to a semi-normal range once it's warmed up and idling?

Any ideas would be greatly appreciated!
shipman is offline   Reply With Quote
Join Cherokee Forum

Join CherokeeForum.com Today - It's Totally Free!

Do you love your Jeep? If so we invite you to join our community and see what it has to offer. Our site is specifically designed for you and it's a great place for Jeep Fans to meet online.
Once you join you'll be able to post messages, upload pictures of your jeep, and have a great time with other Jeep Cherokee fans.. Whether your an old timer or just bought your Jeep you'll find that CherokeeForum.com is a great community to join. Best of all it's totally free!

Join CherokeeForum.com Today! - Click Here JOIN FOR FREE


-->
Old 05-04-2012, 02:36 PM   #2
CF Veteran
 
94cherokeeman's Avatar
 
Join Date: May 2011
Location: Partlow, va
Posts: 3,293

View 94cherokeeman's Photo Album My Photos
1994 Cherokee
Default

Its not going to hurt anything but try changing your oil pressure sending unit
__________________
http://www.olympusoffroad.com/ I anyone wants anything let me know and I'll see what I can do for you
94cherokeeman is offline   Reply With Quote
Old 05-04-2012, 02:38 PM   #3
CF Veteran
 
Join Date: Apr 2012
Location: Wisconsin
Posts: 4,900

View Radi's Photo Album My Photos
Cherokee
Default

99.999% It's the oil pressure sender. They fail by reading extremely high...or dropping to zero at idle, and failures are pretty common. It's located on the oil filter adapter housing....get one from Jeep and replace.

The fact that it drops down a bit once the engine warms is typical...a good sender will show the same.
Radi is offline   Reply With Quote
Old 05-04-2012, 02:49 PM   #4
Newbie
 
Join Date: May 2012
Location: Northern California
Posts: 2

View shipman's Photo Album My Photos
2000 Cherokee
Default

Thanks! I'll replace the sender this weekend and see if that fixes the problem.
shipman is offline   Reply With Quote
 
 
 
Reply

Similar Threads
Thread Thread Starter Forum Replies Last Post
Engine Knocking after fresh oil LittleRed94 OEM Cherokee Tech 77 08-17-2015 08:57 AM
First time poster, looking for engine swap details t.mcginley.jr OEM Cherokee Tech 6 08-13-2015 08:47 AM
Low oil pressure 1989MichJeep OEM Cherokee Tech 9 08-11-2015 06:44 AM
4.0 check engine light came on vonsazkin OEM Cherokee Tech 37 08-10-2015 10:42 PM
gauge swap issues Tann120 OEM Cherokee Tech 29 08-05-2015 01:47 PM

Go Back   Jeep Cherokee Forum > Technical Discussion > OEM Cherokee Tech



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



All times are GMT -5. The time now is 04:51 AM.


This site is in no way affiliated with Jeep or Chrysler.

Emails Backup