High oil pressure - Jeep Wrangler Forum
Jeep Wrangler Forum

Go Back   Jeep Wrangler Forum > YJ Jeep Wrangler Forum > YJ Tech Forum

Join Wrangler Forum Today


Reply
 
Thread Tools

Please support our sponsors and let them know you heard about them on WranglerForum.com
Old 04-28-2008, 09:39 PM   #1
Jeeper
 
Join Date: Apr 2008
Posts: 43
High oil pressure

I have a question for you guys. I read on another post abouthigh oil pressure and I am having a similar problem. When I am in 5th gear at about 55 the oil pressure is maxed at 80. As I slow down it comes down to around 70. As it idles its around 50. The thing is it jumps right from the get go to 80 after i start it when it's been sitting. It has 100K and has been very well taken care of with NO off-road use. Any ideas on what this could be? The previous owner said he noticed it about a year ago but never paid it much mind. I just don't want to damage anythingif i can prevent it.

thanks in advance!!

jeepnewbie is offline   Quote Quick Reply
Old 04-28-2008, 09:53 PM   #2
Jeeper
 
jpdocdave's Avatar
 
Join Date: Mar 2008
Location: beach park, il
Posts: 8,162
Images: 7
could be faulty sender. what weight oil ya runnin in it? 60 psi while driving is normal.

my first jeep had the 4 banger in it, and i put 20w50 in it like an idiot cuz i thought it had even better oil pressure. it did what you're talkin about

__________________
"The danger to America is not Barack Obama but a citizenry capable of entrusting a man like him with the Presidency. It will be far easier to limit and undo the follies of an Obama presidency than to restore the necessary common sense and good judgment to a depraved electorate willing to have such a man for their president."
http://mybroadband.co.za/photos/data...re_cowbell.gif
jpdocdave is offline   Quote Quick Reply
Old 04-28-2008, 09:54 PM   #3
Jeeper
 
Join Date: Apr 2008
Posts: 43
10-30. I just picked upi the jeep today from the seller.

Is it a pain to change the sender unit??

And thanks jpdocdave...your advice has been awesome!!!
jeepnewbie is offline   Quote Quick Reply
Old 04-28-2008, 09:59 PM   #4
Jeeper
 
jpdocdave's Avatar
 
Join Date: Mar 2008
Location: beach park, il
Posts: 8,162
Images: 7
no problem, the sender is very easy, should be right by the filter. on some jeeps its right in the way of the filter and a lot of guys damage it changing the filter cuz someone gorilla fisted it on. might as well change the oil right away if you just got it. let us know how it goes
__________________
"The danger to America is not Barack Obama but a citizenry capable of entrusting a man like him with the Presidency. It will be far easier to limit and undo the follies of an Obama presidency than to restore the necessary common sense and good judgment to a depraved electorate willing to have such a man for their president."
http://mybroadband.co.za/photos/data...re_cowbell.gif
jpdocdave is offline   Quote Quick Reply
Old 04-28-2008, 10:02 PM   #5
Jeeper
 
Join Date: Apr 2008
Posts: 43
will do...thanks again!!!

anything special I should be aware of changing it?? It's a 95 wrangler YJ
jeepnewbie is offline   Quote Quick Reply
Old 04-28-2008, 10:33 PM   #6
Jeeper
 
jpdocdave's Avatar
 
Join Date: Mar 2008
Location: beach park, il
Posts: 8,162
Images: 7
not really, don't over tighten. i put a little teflon tape on the threads to seal from leaks. they don't need to be gorilla fisted either.
__________________
"The danger to America is not Barack Obama but a citizenry capable of entrusting a man like him with the Presidency. It will be far easier to limit and undo the follies of an Obama presidency than to restore the necessary common sense and good judgment to a depraved electorate willing to have such a man for their president."
http://mybroadband.co.za/photos/data...re_cowbell.gif
jpdocdave is offline   Quote Quick Reply
Old 05-02-2008, 09:21 PM   #7
Newb
 
Join Date: Feb 2007
Posts: 8
I have exactly the same trouble - oil pressure started going off the scale this winter and is getting higher, even though the weather is warmer. NOT the sender or gauge, I've checked with a mechanical gauge. Also changed the oil, and filter, even tried a 5-30SAE synthetic.

Anyone know what this could be? It is a 1988 YJ with only 30,000 original easy miles on the four cylinder.

I'm thinking maybe pressure relief valve is jammed? Anyone know where it is located? (In the oil pump?) My factory manual is no help on that.

Help! Thanks.

Pete
PeteL is offline   Quote Quick Reply
Old 05-04-2008, 07:33 PM   #8
Jeeper
 
Join Date: Apr 2008
Posts: 43
I just switched my sender unit out and BINGO!!!! The pressure went back down to 60 and stayed there.

HINT!!!
I looked at CAP auto parts and they quoted me a price of $90 for the sending unit. I went an on-line store and got it for $22 including shipping....shop around.
jeepnewbie is offline   Quote Quick Reply
Old 05-04-2008, 09:43 PM   #9
Jeeper
 
jpdocdave's Avatar
 
Join Date: Mar 2008
Location: beach park, il
Posts: 8,162
Images: 7
sweet, glad it worked.
__________________
"The danger to America is not Barack Obama but a citizenry capable of entrusting a man like him with the Presidency. It will be far easier to limit and undo the follies of an Obama presidency than to restore the necessary common sense and good judgment to a depraved electorate willing to have such a man for their president."
http://mybroadband.co.za/photos/data...re_cowbell.gif
jpdocdave is offline   Quote Quick Reply
Old 08-04-2010, 10:40 PM   #10
Newb
 
Join Date: Aug 2010
Posts: 1
Not the sender

I've got a 92 4.2L YJ and I had the same problem and my sender was Fubar so I changed it out. seemed to be running right around 40psi for a couple of days and now it's back to spiking to 80. The sender looks solid no leaks so I'm wondering if I should try the CCV and what's the best way to go about it. can you clean them out or just replace it? thanks in advance


JJ

JesseJames61 is offline   Quote Quick Reply
Reply

Quick Reply
Message:
Options

Register Now

In order to be able to post messages on the Jeep Wrangler Forum forums, you must first register.
Please enter your desired user name, your email address and other required details in the form below.
User Name:
Password
Please enter a password for your user account. Note that passwords are case-sensitive.
Password:
Confirm Password:
Email Address
Please enter a valid email address for yourself.
Email Address:

Log-in

Human Verification

In order to verify that you are a human and not a spam bot, please enter the answer into the following box below based on the instructions contained in the graphic.



Thread Tools

Posting Rules
You may post new threads
You may 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
Really HIGH oil pressure in cold BlackJeepoftheFamily TJ General Discussion Forum 8 11-19-2008 10:26 PM
Oil Pressure High??? bobdog TJ Tech Forum 5 10-09-2007 10:31 AM
High oil pressure question Demodave TJ Tech Forum 3 06-01-2007 10:57 AM
high oil pressure! HELP!!! matty0335 TJ Tech Forum 7 10-20-2006 05:03 PM
Extremely High Oil Pressure? BigMike YJ General Discussion Forum 19 03-05-2006 06:13 PM



Download our Mobile App

» Network Links
»Jeep Parts
» Featured Product

All times are GMT -5. The time now is 05:03 AM.



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