oil pressure suddenly drops? - Dakota Durango Forum
5.2L/5.9L/6.7L Engines Questions regarding the 5.2L/5.9L/6.7L V8 Engines

Reply
 
Thread Tools Rate Thread Display Modes
post #1 of 23 Old 04-14-2010, 03:15 AM Thread Starter
jburke311
Registered User
 
Join Date: Jan 2010
Location: Templeton ma
Vehicle: 99 dakota 5.2l 4x4
Posts: 1
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
 
Unhappy oil pressure suddenly drops?

last week i too my stock 99 5.2l dak 4x4 w ith 77xxx miles wheelin, i got stuck n had to be towed out. i got some watter n maybe muck into the exhaust. so i drained the oil n used some seafoam twice into it. does anyone kno why my oil pressure keeps dropping once my truck is warmed up? when im driving at like say 1200 rpm the oil pressure is fine, but at idle or low speeds it drops. is it the oil pump or what? i have a full oil pan and im wonderin if just drainin a quart and puttin lucas oil stablizer will clean it out?
jburke311 is offline  
Sponsored Links
Advertisement
 
post #2 of 23 Old 04-14-2010, 03:18 AM
Harley
01 Durango R/T
 
Harley's Avatar
 
Join Date: Feb 2009
Location: Keller, Texas
Vehicle: 2001,Dodge Durango R/T
Modifications: Bone Stock
Posts: 239
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
 
I know in my 5.9 when I am moving, the needle stays in the middle, but when I come to a stop light or just sit and idle, it sits at the "L" until I get moving again. Not sure if this is normal but I do not seem to be having any problems (Yet)

5 DOOR WHORE #194
Harley is offline  
post #3 of 23 Old 04-14-2010, 04:03 AM
Little Blue Guy
#19 ƃop ǝnןq ǝןʇʇıן

 
Little Blue Guy's Avatar
 
Join Date: Jan 2006
Location: Not Sure
Vehicle: '94 Dodge Dakota Sport
Modifications: Installed every option
Posts: 13,107
Mentioned: 1 Post(s)
Tagged: 0 Thread(s)
Quoted: 6 Post(s)
           
You will need to install a mechanical gauge in the engine to measure actual oil pressure. Don't trust the dash gauge...you don't know how low "L" is or how high "H" is on the gauge as far as readings go.

You might have a plugged pickup tube screen.

All our cars are here --> http://www.hubgarage.com/mygarage/A383Wing

Little Blue Guy is offline  
post #4 of 23 Old 04-14-2010, 05:44 AM
timberwoof
Law Dawg
 
timberwoof's Avatar
 
Join Date: Jul 2009
Location: Portland, Tx
Vehicle: 2000 Dodge Durango, 5.2L
Modifications: None Yet
Posts: 890
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
 
Plugged Tube is my call. Has happened to my rango before and it was sludged.
timberwoof is offline  
post #5 of 23 Old 04-14-2010, 06:18 AM
Harley
01 Durango R/T
 
Harley's Avatar
 
Join Date: Feb 2009
Location: Keller, Texas
Vehicle: 2001,Dodge Durango R/T
Modifications: Bone Stock
Posts: 239
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
 
Thanks for the info guys. Will need to check mine out when I get a chance.

5 DOOR WHORE #194
Harley is offline  
post #6 of 23 Old 04-14-2010, 06:48 AM
hwystar
<---1 of none!

 
hwystar's Avatar
 
Join Date: Feb 2006
Location: orangeville ontario canada
Vehicle: 1994 dakota club cab
Modifications: nascar, military jets, wrenching
Posts: 6,581
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
   
Garage
The stock senders on these trucks tend to go for shit as well. The one on "booger" stays nice and high when your driving then drops to nothing at idle but the light doesnt come on. Or it drops and the light comes on. Or the light comes on and the guage reads fine.Or both read fine. As long as the lifters dont start ticking... I dont worry about it.

Appeared in the July/10 issue of Mopar Muscle
Dakota-Durango Truck Of the Month Aug 07
hwystar is offline  
post #7 of 23 Old 04-23-2010, 02:21 AM
dkanderson
Registered User
 
dkanderson's Avatar
 
Join Date: Mar 2010
Location: Bessemer City NC
Vehicle: 1998 dodge dakota SLT
Posts: 145
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
 
Send a message via AIM to dkanderson
my trucks doing the same thing kinda when its cold its at 40 when it gets hot and im driving it gose to maybe 30 35 and then at a stop it gose to the first line then slowly gose back up to 30 35 when i take off i really dont want to take the pan off looks like alot of work jacking the motor up and all.....where is the sending unit at? anyone got pics

Last edited by dkanderson; 04-23-2010 at 02:34 AM.
dkanderson is offline  
post #8 of 23 Old 04-23-2010, 03:10 AM
primus454
Registered User
 
Join Date: Nov 2009
Location: Canton, Ohio
Vehicle: 1997 Dodge Dakota
Posts: 384
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
 
Sending unit is next to the distributor way back behind the intake manifold.
primus454 is offline  
post #9 of 23 Old 05-03-2010, 02:08 AM
cindrango
Registered User
 
cindrango's Avatar
 
Join Date: Nov 2009
Location: south florida
Vehicle: 2000 4x4 durango
Posts: 574
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
 
I had the same thing happen before.The Dwas under waranty.Tookit to the dealer.The pump was bad.They put in a new motor under waranty.That was 2 1/2 years ago.now this one is doing the same thing now.I come to a stop.The preasure drops to 0.The light comes on.Put it in Neutral.rev the motor.The Preasure comes back up.Im going to try the sender.Its not under waranty anymore.I dont feel like yanking the motor yet.

Sunset Orange Metalic Paint,33 Inch Pro Comp MTs,TS lift,PA Body Lift,4 130 Watt Roof Top Lights,Custom Etched Rear Glass,Boston Acoustic Seperates F&R,JL 8w7 ,52.5 TB,Hemifever tuned 408 cid,4bl M1,Compcams 216-224 cam,Eddelbrock shorty headers with Y pipe,No cat,Eddelbrock RPM cat back,1998 Crown Victoria 2 speed fan.Custom 3/16 steel front bumper with a 8000 lb winch mounted behind.4.88gears,SAS, 37 inch irok bias
cindrango is offline  
post #10 of 23 Old 05-03-2010, 02:33 AM
TurboBlew
Resleeves rnaz's borings

 
TurboBlew's Avatar
 
Join Date: Nov 2005
Location: Actionville, FL
Vehicle: 1998 "wannabe" R/T
Modifications: Assembled at the dodge factory, caught fire 10/19/08
Posts: 9,500
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
   
Quote:
Originally Posted by cindrango View Post
I had the same thing happen before.The Dwas under waranty.Tookit to the dealer.The pump was bad.They put in a new motor under waranty.That was 2 1/2 years ago.now this one is doing the same thing now.I come to a stop.The preasure drops to 0.The light comes on.Put it in Neutral.rev the motor.The Preasure comes back up.Im going to try the sender.Its not under waranty anymore.I dont feel like yanking the motor yet.
how did you verify the dealer put a new motor in? Did you take their word on it?

The ALLIANCE is watching this post!!
TurboBlew is offline  
post #11 of 23 Old 05-03-2010, 02:33 AM
hskrRT
nstg8tr
 
hskrRT's Avatar
 
Join Date: Jul 2003
Location: CenCal
Vehicle: 2000 R/T
Modifications: Lots 'O stuff
Posts: 16,717
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 24 Post(s)
   
Send a message via AIM to hskrRT Send a message via Yahoo to hskrRT
Quote:
Originally Posted by cindrango View Post
I had the same thing happen before.The Dwas under waranty.Tookit to the dealer.The pump was bad.They put in a new motor under waranty.That was 2 1/2 years ago.now this one is doing the same thing now.I come to a stop.The preasure drops to 0.The light comes on.Put it in Neutral.rev the motor.The Preasure comes back up.Im going to try the sender.Its not under waranty anymore.I dont feel like yanking the motor yet.
Just a quick question, but how iis your oil level??

hskrRT is offline  
post #12 of 23 Old 05-03-2010, 02:34 AM
hskrRT
nstg8tr
 
hskrRT's Avatar
 
Join Date: Jul 2003
Location: CenCal
Vehicle: 2000 R/T
Modifications: Lots 'O stuff
Posts: 16,717
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 24 Post(s)
   
Send a message via AIM to hskrRT Send a message via Yahoo to hskrRT
Quote:
Originally Posted by jburke311 View Post
last week i too my stock 99 5.2l dak 4x4 w ith 77xxx miles wheelin, i got stuck n had to be towed out. i got some watter n maybe muck into the exhaust. so i drained the oil n used some seafoam twice into it. does anyone kno why my oil pressure keeps dropping once my truck is warmed up? when im driving at like say 1200 rpm the oil pressure is fine, but at idle or low speeds it drops. is it the oil pump or what? i have a full oil pan and im wonderin if just drainin a quart and puttin lucas oil stablizer will clean it out?
How far does it "drop" And did you put seafoam in the oil?? If so, you may want to drain it again and re-fill with just 5 qts of good oil and skip the seafom.

hskrRT is offline  
post #13 of 23 Old 05-31-2010, 07:52 PM
MagnumDak
Registered User
 
Join Date: Aug 2005
Location: south florida
Vehicle: 98 dakota r/t cc
Posts: 493
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
 
I don't remember having this problem on my dakota but, I would get this checked out SOON. I had this same problem on my ram=motor replaced, broken rod. If it were me, I would either get it checked out or get the manual gauge.
MagnumDak is offline  
post #14 of 23 Old 05-31-2010, 08:23 PM
Shimrra
110 HP, 11.1 MPG. FML
 
Shimrra's Avatar
 
Join Date: Oct 2009
Location: Middlebury, CT
Vehicle: '93, 3.9L, '92 3.5L
Modifications: V8 TB, e-fan.
Posts: 4,370
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
 
Send a message via AIM to Shimrra Send a message via MSN to Shimrra Send a message via Yahoo to Shimrra Send a message via Skype™ to Shimrra
lol as long as there is some pressure it will live.

'93 Dak, V6 Auto RWD;
V8TB, E-fan, and a bad smoking habit.

IN THE WORKS:
'92 318 swap, coming closer to completion every dime I can squirrel
Shimrra is offline  
post #15 of 23 Old 05-31-2010, 09:39 PM
RebelX
Registered User
 
RebelX's Avatar
 
Join Date: Nov 2006
Location: abilene ks
Vehicle: 98/Dodge/Durango SLT
Modifications: cars, sports, fishing, hunting
Posts: 1,050
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
 
Send a message via MSN to RebelX
i had this problem with my 98 5.9L Rango. tried a new sending unit and said f this when it didn't work. installed a mechanical guage....now to get the check guages light on the dash to go out, lol.


oh. mine happened when i was towing my monte carlo home from south dakota, started flucuating around on me and oil level was fine.

1998 Durango SLT 5.9L, 4x4, FlowMaster DF40 series, Cooper STT's (Beast)
1980 Chevy Monte Carlo...stock for now
1988 Chevy Monte Carlo...427BB/Th200R4 in the works
5 Door Whore # 173
RebelX is offline  
Sponsored Links
Advertisement
 
Reply

Quick Reply
Message:
Options

Register Now

In order to be able to post messages on the Dakota Durango 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:
If you do not want to register, fill this field only and the name will be used as user name for your post.
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.



User Tag List

Thread Tools
Show Printable Version Show Printable Version
Email this Page Email this Page
Display Modes Rate This Thread
Linear Mode Linear Mode
Rate This Thread:


Forum Jump

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

 
For the best viewing experience please update your browser to Google Chrome