Oil pressure drop - Jeep Wrangler Forum

Go Back   Jeep Wrangler Forum > TJ Jeep Wrangler Forum > TJ Tech Forum

Join Wrangler Forum Today

Thread Tools

Please support our sponsors and let them know you heard about them on WranglerForum.com
Old 09-24-2007, 01:05 PM   #1
Join Date: Mar 2007
Location: La vista, Ne
Posts: 126
Oil pressure drop

My oil pressure just started dropping today when i have her at idle. The needle used to always stay pretty vertical unless i got on it then it would go up a little. Now the moment it drops to idle the pressure drops from vertical to half of that. The moment I step on the gas slightly the oil pressure goes right back to normal. I am not overheating either if i let it idle for extended time, tried that. Maybe just over-paranoid, but i dont like things that suddenly change for no reason, or at least an unknown reason. Is this normal or a sign of something bad to come? Thanks!

coyote99 is offline   Quote
Old 09-24-2007, 02:04 PM   #2
Drives by Braille

WF Supporting Member
AzTJ's Avatar
Join Date: Dec 2006
Location: For-8-Oh!
Posts: 13,632
Its a wacky Oil Pressure Sending Unit. They are a common issue. CHeck to see if its loose and the plug is secure. Its located down by the oil filter. Its a long and skinny thing with 2 wires coming off of it. If its not loose and the connection is secure, I'd buy a new one. They cost like $7 from NAPA.

AzTJ is offline   Quote
Old 09-24-2007, 03:47 PM   #3
richp's Avatar
Join Date: Mar 2007
Location: Pocono mountains
Posts: 1,559
Those cheap orange oil filters will do that too.

One of my 2.5L 97's does it every once in a while, got a plug/socket thing going on, hit a bump and it's back, wiggle the plug and it comes and goes. Been well behaved since it warmed up here in the NE, gave a heart failure a couple of times though.
richp is offline   Quote
Old 09-24-2007, 04:38 PM   #4
MouthfulOfGrass's Avatar
Join Date: Nov 2006
Location: Lower California
Posts: 1,819
I thought it was normal for it to do that.
I'm not gonna go over that......

MouthfulOfGrass is offline   Quote
Old 09-24-2007, 06:18 PM   #5
Rawkon's Avatar
Join Date: Apr 2005
Location: fullerton/big bear
Posts: 2,061
Send a message via AIM to Rawkon Send a message via MSN to Rawkon
as long as u have 15lbs at idle it it jumps up and holds with acceleration to the halfway mark your good
Rawkon is offline   Quote
Old 09-25-2007, 06:58 AM   #6
Join Date: Mar 2007
Location: La vista, Ne
Posts: 126
ive had oil sending units go out on other vehicles, they just never did this before, it is probably just the connection which i will check tonight, thanks for the help. As for the cheap orange filter, i only use the best oil and filter on my girl

coyote99 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
Low oil pressure at idle 97tjcse TJ Tech Forum 9 08-24-2009 11:12 PM
Really HIGH oil pressure in cold BlackJeepoftheFamily TJ General Discussion Forum 8 11-19-2008 10:26 PM
Tire Pressure scotiez General Jeep Discussion 15 04-08-2008 06:35 PM
T-case drop removal GrnTJ TJ Tech Forum 5 10-01-2007 06:30 PM
oil pressure drop mark TJ Tech Forum 2 10-17-2006 12:08 PM

Download our Mobile App

» Featured Product

All times are GMT -5. The time now is 02:06 AM.

User Alert System provided by Advanced User Tagging v3.1.0 (Pro) - vBulletin Mods & Addons Copyright © 2015 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