Oil Pressure Issue, sending unit already replaced - Jeep Wrangler Forum

Go Back   Jeep Wrangler Forum > TJ Jeep Wrangler Forum > TJ General Discussion Forum

Join Wrangler Forum Today

Thread Tools

Please support our sponsors and let them know you heard about them on WranglerForum.com
Old 04-13-2011, 08:45 PM   #1
Join Date: Aug 2010
Location: Shippensburg, Pa
Posts: 46
wiseguy52 is on a distinguished road
Question Oil Pressure Issue, sending unit already replaced

Ok, so I am having issues with the oil pressure on the jeep. It is a 98 TJ with the 2.5L engine. Here is what has happened.
When we got it, the oil pressure would drop down to nothing and the check guages light would come on. Took it to the shop and they replaced the sending unit. They put the monitor on it and verified there was constant oil pressure.
Since the sending unit was changed, the truck will go up to around 40 psi on the initial start. The longer you run the vehicle, the lower the pressure goes. AFter running for about 30 minutes, the guage reads a constant 0 and the check guages light stays on. The temperature does not rise and it runs around 200 degrees.
Any ideas on what might be wrong? As I said before, the sending unit has been replaced, I have checked the oil level, etc. I don't think it is the oil pump but I am not sure what it might be. Could it be a sensor or the guage itself?
wiseguy52 is offline   Quote
Old 04-13-2011, 08:57 PM   #2
Benjamen's Avatar
Join Date: Mar 2011
Location: Carroll County VA
Posts: 171
Benjamen is on a distinguished road
Check your oil and see if there is a metallic tint to it if there is then the chances are your engine bearings have gone bad, If not that then def change your sensor next.

Benjamen is offline   Quote
Old 04-13-2011, 09:12 PM   #3
MLaborde's Avatar
Join Date: Feb 2011
Location: East Texas
Posts: 427
MLaborde is on a distinguished road
Use a mechanical gauge or have a shop check the pressure with a mechanical gauge. If you still are getting a zero reading then you have real problems.

Good luck!!
MLaborde is offline   Quote
Old 04-13-2011, 09:20 PM   #4
Join Date: Feb 2011
Location: Ashland city TN
Posts: 44
Fowler10 is on a distinguished road
Possibly the new sending unit is defective from the factory I chased a problem on a full size bronce once and it was a bad map sensor Wich was the first part I changed out never know sometimes its the obvious we over look. Good luck!
Fowler10 is offline   Quote

Thread Tools

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

Similar Threads
Thread Thread Starter Forum Replies Last Post
Temperature Sending Unit YJ94Runner YJ Tech Forum 3 06-20-2011 10:45 AM
oil pressure sending unit socket erizo TJ Tech Forum 1 01-10-2011 06:53 PM
Oil Pressure Sending Unit Location RSC17 YJ Tech Forum 6 11-23-2010 04:34 PM
new head gasket and sending unit..still have oil pressure gauge issue TXST8tj TJ General Discussion Forum 10 09-18-2008 11:37 AM
Oil pressure sender, replaced, I think.... Black02M3 TJ Tech Forum 12 03-19-2008 07:58 AM

Download our Mobile App

» Featured Product

All times are GMT -5. The time now is 06:01 AM.

User Alert System provided by Advanced User Tagging v3.1.0 (Pro) - vBulletin Mods & Addons Copyright © 2016 DragonByte Technologies Ltd.
vBulletin Security provided by vBSecurity v2.2.2 (Pro) - vBulletin Mods & Addons Copyright © 2016 DragonByte Technologies Ltd.

Jeep®, Wrangler, Liberty, Wagoneer, Cherokee, and Grand Cherokee are copyrighted and trademarked to Chrysler Motors LLC.
Wranglerforum.com is not in any way associated with the Chrysler Motors LLC
« Back

Enter your email address:

Delivered by FeedBurner