Accelerator pedal down...oil pressure guage down... - Diesel Truck Forum - TheDieselGarage.com
Thread Details Posted by 284, this thread has received 14 replies and been viewed 1237 times.

Reply
 
LinkBack Thread Tools Display Modes
post #1 of 15 (permalink) Old 02-23-2008, 08:29 PM Thread Starter
284
 
Join Date: Feb 2008
Posts: 23
Points: 254
Thanks: 0
Thanked 0 Times in 0 Posts
Accelerator pedal down...oil pressure guage down...

...proportionately.
Weird. If I start to mash down on the pedal, the oil guage goes down the same amount and rate. Idles just fine. If I just slowly acelerate, oil pressure is OK.

Oil guage did the same thing w/the previous owner.

I have a 91.5, 2wd auto, btw. Any ideas? I'd bet the guage, but what's throwing me is the proportionality of it.

Thanks. Gary
284 is offline  
Sponsored Links
Advertisement
 
post #2 of 15 (permalink) Old 02-24-2008, 03:02 AM
2nd Gen Guru
 
Mopar1973Man's Avatar
 
Join Date: Dec 2008
Location: New Meadows, Idaho
Posts: 2,641
Points: 54,785
Thanks: 9
Thanked 140 Times in 131 Posts
Garage
Send a message via Yahoo to Mopar1973Man
I would say the pressure sender is failing...

I also would hook up a test gauge (mechanical) at the filter housing to verify for sure...

Michael Nelson - 2002 Dodge Cummins & 1996 Dodge Ram 5.9L Gasser
116K Miles On My VP44 - 4 Years of 2 Cycle Oil Diet! - Mixed at 128:1 Ratio - 25.3 MPG maxed out!
Mopar1973Man is offline  
post #3 of 15 (permalink) Old 02-24-2008, 06:54 AM
Senior Member
 
Join Date: Mar 2007
Posts: 1,836
Points: 19,198
Thanks: 69
Thanked 134 Times in 130 Posts
Do the other gages move like the oil pressure?
Check the engine ground.

Verify the oil pressure with a mechanical gage, a cheap one taped to the windshield for long enough to see if the pressure is dropping, in fact.

Check the oil level for a shift in the dipstick or other improper level indicators.

Check for obstructed oil pickup screen.

keydl

93 Dodge /CTD, IC, 518, club cab LE, BHAF, KDP fixed, kelderman air ride
81 Isuzu /C223na, 5spd
keydl is offline  
post #4 of 15 (permalink) Old 02-24-2008, 03:12 PM Thread Starter
284
Threadstarter
 
Join Date: Feb 2008
Posts: 23
Points: 254
Thanks: 0
Thanked 0 Times in 0 Posts
Shoot, lost everything I typed when I did another window to show these.

Again...

Thanks for the input. I agree I'll have to pick up a mechanical gauge and stick it it. I had a f**d ranger that had a piece of oil pan gasket break off and turn into an obstruction. 2wd = pull engine to get at that. This dodge is a 2wd.

The previous owner was a slob, so I figured the maintenance of this vehicle would be also. It was. Changed the oil and filter, then added a can of seafoam to clean it out. Same for fuel, plus seafoam. He had it for 130K miles and changed fuel filter twice.

https://www.thedieselgarage.com/galle...fuelfilter.jpg

https://www.thedieselgarage.com/galle...uelfilter1.jpg

CumminsPride helped me on another thread that may be related. When cleaning up the vehicle, I noted a spark when I reconnected the neg to the batt (after pos was already on). So I went and pulled one fuse at a time and noted less spark when dome/int light was disconnected. So short there I'd bet.

This is starting to remind me of a dog I took in once. I had to clean it up real good and get it back on its feet in good health. That dog lasted me a good five or so more years. Hopefully this truck will also.
284 is offline  
post #5 of 15 (permalink) Old 02-25-2008, 02:49 PM
T.D.G. Mafia Member #88
 
cumminspride's Avatar
 
Join Date: Jan 2007
Posts: 578
Points: 7,979
Thanks: 2
Thanked 0 Times in 0 Posts
I sould suggest at least a TSC oil psi guage ran str8 into the cab. Pull the oil sender and pop a 1/8npt adapter in there and tap your gauge in.

06 Mega Cab 3500 CTD 4X4 Auto SRW
http://www.hoosiertruckclub.com/phpBB3/index.php
cumminspride is offline  
post #6 of 15 (permalink) Old 02-26-2008, 02:35 AM Thread Starter
284
Threadstarter
 
Join Date: Feb 2008
Posts: 23
Points: 254
Thanks: 0
Thanked 0 Times in 0 Posts
Quote:
Originally Posted by cumminspride
I sould suggest at least a TSC oil psi guage ran str8 into the cab. Pull the oil sender and pop a 1/8npt adapter in there and tap your gauge in.
Gracias. In the process of doing that. Gonna add a pyro and temp as the temp was moving pretty erratically--too much fluctuation too quickly.
284 is offline  
post #7 of 15 (permalink) Old 02-26-2008, 02:57 PM
2nd Gen Guru
 
Mopar1973Man's Avatar
 
Join Date: Dec 2008
Location: New Meadows, Idaho
Posts: 2,641
Points: 54,785
Thanks: 9
Thanked 140 Times in 131 Posts
Garage
Send a message via Yahoo to Mopar1973Man
Well for the information value...

MINIMUM OIL PRESSURE at Idle is 10 PSI
MINIMUM OIL PRESSURE at 2K RPMs is 30 PSI

From a 2nd gen FSM book...

Michael Nelson - 2002 Dodge Cummins & 1996 Dodge Ram 5.9L Gasser
116K Miles On My VP44 - 4 Years of 2 Cycle Oil Diet! - Mixed at 128:1 Ratio - 25.3 MPG maxed out!
Mopar1973Man is offline  
post #8 of 15 (permalink) Old 03-01-2008, 08:00 PM
 
Join Date: Dec 2008
Posts: 148
Points: 1,005
Thanks: 0
Thanked 0 Times in 0 Posts
Sender! Exact same thing to the t as far as symptoms as mine! 23 bucks later I was back on my way and happy again. Try it anyway .02
cumminsram is offline  
post #9 of 15 (permalink) Old 03-03-2008, 02:13 AM
Senior Member
 
Join Date: Dec 2008
Posts: 444
Points: 28,747
Thanks: 0
Thanked 14 Times in 14 Posts
Check the body grounds on the truck. A lot of the time the first thing to act up on a bad ground is gages. The 10ga wire off the negative terminal has paint under it. Sand the paint off and resecure the ground and see if the problem goes away.

93 W350 w/duals, fuel pin turned, 6X.018" injectors, 4" exhaust, 3" air intake horn, HX40/16, G56 /SBC Con-OFE, 307's axles' 2" skyjacker lift, B&W flatbed
Philip is offline  
post #10 of 15 (permalink) Old 03-07-2008, 01:01 AM Thread Starter
284
Threadstarter
 
Join Date: Feb 2008
Posts: 23
Points: 254
Thanks: 0
Thanked 0 Times in 0 Posts
Gonna replace the sender/gauge this weekend. Also, replace the ABS thingie on top of the pumkin....that is, if it doesn't snow again like last weekend.


Thanks all. :Thumbup:
284 is offline  
Reply

Quick Reply
Message:
Options

Register Now



In order to be able to post messages on the Diesel Truck Forum - TheDieselGarage.com 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:
OR

Log-in










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



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 On
Pingbacks are On
Refbacks are On

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