Last edit by: IB Advertising
See related guides and technical advice from our community experts:
Browse all: Engine Problems by Sympton
- Jeep Cherokee XJ 1984 to 2001 Why is Oil Pressure High
Guide to diagnose trouble and recommended solutions
Browse all: Engine Problems by Sympton
What is normal oil pressure for a 4.0?
#1
Junior Member
Thread Starter
Join Date: Oct 2011
Location: Conway Arkansas
Posts: 80
Likes: 0
Received 0 Likes
on
0 Posts
Year: 1991
Model: Cherokee
Engine: 4.0
What is normal oil pressure for a 4.0?
M reading 40 at idle and 60 when going down the road, how bout yall
#2
Member
Join Date: May 2011
Location: Oklahoma City, Ok
Posts: 114
Likes: 0
Received 0 Likes
on
0 Posts
Year: 1991
Model: Cherokee
Engine: 4.0L I6
Not less than 13 psi at idle when warm, between 37-75 psi over 1600 rpms
mine with 20 years and 180k is
30 at warm idle and 60 at 2000 rpms
mine with 20 years and 180k is
30 at warm idle and 60 at 2000 rpms
#4
CF Veteran
Join Date: Dec 2010
Location: Frederick, Maryland
Posts: 6,880
Likes: 0
Received 0 Likes
on
0 Posts
Year: 1996
Model: Cherokee
Engine: 4.0 I-6 High output
#6
CF Veteran
Join Date: Mar 2009
Location: Loomis,California
Posts: 8,712
Likes: 0
Received 2 Likes
on
2 Posts
Year: 1987
Model: Cherokee
Engine: 242 inline six
I use napa 10w/30 and napa gold filter,get 60 psi cold at highway speeds,45 psi warm at highway speeds,around 25 to 40 at idle depending if its warmed up or cold
#7
Junior Member
Thread Starter
Join Date: Oct 2011
Location: Conway Arkansas
Posts: 80
Likes: 0
Received 0 Likes
on
0 Posts
Year: 1991
Model: Cherokee
Engine: 4.0
Thanks, just making sure I was not crazy. My wrangler oil pressure gauge did not work and other than that I have only had fords, they run low pressure all the time.
Trending Topics
#8
CF Veteran
Join Date: Oct 2011
Location: Bakersfield CA
Posts: 1,268
Likes: 0
Received 1 Like
on
1 Post
Year: 1990
Model: Cherokee (XJ)
Engine: 4.0
60 to 70 when cold, once it warms up 40, all at idle. when driving 65 to 70 is normal. asked a chrysler tech about this once he said that it was normal.
#9
Seasoned Member
Join Date: Jun 2010
Location: Charleston, SC
Posts: 448
Likes: 0
Received 0 Likes
on
0 Posts
Year: 1990 - 2000
Model: Cherokee
Engine: 4.0
#10
Member
Join Date: Oct 2011
Location: Maryland
Posts: 192
Likes: 0
Received 0 Likes
on
0 Posts
Year: 1997
Model: Cherokee
Engine: 4.0
Mine is 60 at cold idle, about 20 at warm idle.
50-60 at cruise.
Castrol 10W30, Purolator Filter, Normally I run Fram tough guard though.
50-60 at cruise.
Castrol 10W30, Purolator Filter, Normally I run Fram tough guard though.
#11
Is my oil pressure ok?
When I start my jeep cherokee starts up its at about 17 psi and idles around the same. While running it goes up to about 22-24 psi. It has not given me any problems. Is the psi ok or do I have a problem?
#13
CF Veteran
Join Date: Dec 2012
Location: York, PA
Posts: 4,169
Likes: 0
Received 6 Likes
on
6 Posts
Year: 1998
Model: Cherokee
Engine: 4.0
Mine jumps all around, i've seen it around 20 and jump to around 50 but never higher than that. I'm running 5w30 and a Fram filter as well with zero issues.
Just curious--I see that everyone is running 10w30 on this post. Is there any specific advantages? my daddy always taught me to use 5w30 in most things
Just curious--I see that everyone is running 10w30 on this post. Is there any specific advantages? my daddy always taught me to use 5w30 in most things
#14
CF Veteran
Join Date: Aug 2011
Location: San Jose
Posts: 1,994
Likes: 0
Received 7 Likes
on
7 Posts
Year: 89
Model: Cherokee
Engine: 4.0 I6
Mine jumps all around, i've seen it around 20 and jump to around 50 but never higher than that. I'm running 5w30 and a Fram filter as well with zero issues.
Just curious--I see that everyone is running 10w30 on this post. Is there any specific advantages? my daddy always taught me to use 5w30 in most things
Just curious--I see that everyone is running 10w30 on this post. Is there any specific advantages? my daddy always taught me to use 5w30 in most things
"Maybe a little lighter in the summer, thicker for winter, or higher mileage vehicles "---- Do not quote me on that, do more research if you're really interested.
Common misconception is that the w stands for weight, it means winter, but really means the low temp viscosity, next number is the higher operating temp viscosity.
Never seen an issue with using 5-30 over 10-30 or vise versa. I feel like my engine is happier with the 10-30 though. Although I did just thoroughly clean my pan and pickup tube... who knows
My oil pressure is about 15-20 at start up and about 50-60 on the throttle, when it warms up it idles at around 40, still 50-60 on the throttle.