Recent Topics
Toyota Sienna vs. Traverse vs. ? for family of 6
by deanm11
17 minutes 16 seconds ago
1994 Pontiac Grand Prix 3.1 L - Oil recommendation
by Galantboy
52 minutes 2 seconds ago
Torque Adapter?
by Quattro Pete
Today at 02:25 PM
Oil temperature?
by kjbock
Today at 01:56 PM
LJ 4 Driver
by redhat
Today at 01:41 PM
Fresh Oil Smells like Aftershave
by tc1446
Today at 01:18 PM
You got a flat tire dude!
by y_p_w
Today at 01:05 PM
81 Fairmont valvetrain pics
by Jakegday
Today at 12:56 PM
Knee issues from bike riding?
by sleddriver
Today at 12:46 PM
Moving MS Office to a new SSD?
by ClutchDisc
Today at 11:46 AM
At auction where I got mine 1996 Lexus ES 300 114k
by clarkflower
Today at 11:29 AM
Will Hayden arrested again.
by dave1251
Today at 10:50 AM
Newest Members
lilmoonee, rayzn1123, EricWalls, mikejanczak, 1972
51112 Registered Users
Who's Online
108 registered (01_celica_gt, 29662, 05LGTLtd, 01rangerxl, 3800Series, 123Saab, 10 invisible), 1912 Guests and 223 Spiders online.
Key: Admin, Global Mod, Mod
Forum Stats
51112 Members
64 Forums
218367 Topics
3443017 Posts

Max Online: 2862 @ 07/07/14 03:10 PM
Donate to BITOG

Page 1 of 2 1 2 >
Topic Options
#2812130 - 11/24/12 03:27 AM OBDII & Oil Pressure
MarkStock Offline


Registered: 10/23/12
Posts: 635
Loc: CA
So I've managed to get access on my laptop to what appears to be every Ford code through my OBDII reader.

But I don't seem to have oil pressure.

Is there something else that I should be looking for? I have all sorts of things I can monitor.

Also, I have a code that's telling me I have 91 octane fuel in the tank but I only fill up on regular. Any idea what that's about?

Top
#2812161 - 11/24/12 05:42 AM Re: OBDII & Oil Pressure [Re: MarkStock]
Shannow Offline


Registered: 12/12/02
Posts: 26298
Loc: a prison island
Put 0W-20 in it, and then there's one missing link that you don't have to worry about...ever...thy did the tests...and the tests won.

Top
#2812167 - 11/24/12 06:06 AM Re: OBDII & Oil Pressure [Re: MarkStock]
SteveSRT8 Online   content


Registered: 10/10/08
Posts: 14523
Loc: Sunny Florida
There's a reason they don't have a gauge, oil related failures are practically non-existent.

Too much information is as bad as too little...

SOMEWHERE there is an oil pressure sender on every late model engine as the PCM needs that info. Most will cut fuel if there is a low enough reading, and even trigger a code for too much oil pressure as well.

It's in there, you just have to find it!


Edited by SteveSRT8 (11/24/12 06:08 AM)
_________________________
"In a democracy, dissent is an act of faith."
J. William Fulbright
Best ET-12.79 @ 111 mph
4340 pounds, Street tires
Just like we go to Publix

Top
#2812168 - 11/24/12 06:10 AM Re: OBDII & Oil Pressure [Re: MarkStock]
Shannow Offline


Registered: 12/12/02
Posts: 26298
Loc: a prison island
He doesn't need it, nor go look for it.

Right oil, right hole...problem is simply overthinking the issue

Top
#2812170 - 11/24/12 06:11 AM Re: OBDII & Oil Pressure [Re: MarkStock]
EddieCairns Offline


Registered: 09/30/12
Posts: 143
Loc: Scotland
You will only get the oil pressure information if there is a an oil pressure sensor on the car. If it only has a switch to put the oil pressure warning light on and off it will not be able to display oil pressure via the ODBII system.

eddie

Top
#2812184 - 11/24/12 06:41 AM Re: OBDII & Oil Pressure [Re: SteveSRT8]
MarkStock Offline


Registered: 10/23/12
Posts: 635
Loc: CA
Originally Posted By: SteveSRT8
There's a reason they don't have a gauge, oil related failures are practically non-existent.

Too much information is as bad as too little...

SOMEWHERE there is an oil pressure sender on every late model engine as the PCM needs that info. Most will cut fuel if there is a low enough reading, and even trigger a code for too much oil pressure as well.

It's in there, you just have to find it!


Apparently it's not reported through the OBDII interface.

Top
#2812185 - 11/24/12 06:43 AM Re: OBDII & Oil Pressure [Re: EddieCairns]
MarkStock Offline


Registered: 10/23/12
Posts: 635
Loc: CA
Originally Posted By: EddieCairns
You will only get the oil pressure information if there is a an oil pressure sensor on the car. If it only has a switch to put the oil pressure warning light on and off it will not be able to display oil pressure via the ODBII system.

eddie


Aye, thanks for the explanation.

Top
#2812187 - 11/24/12 06:47 AM Re: OBDII & Oil Pressure [Re: Shannow]
MarkStock Offline


Registered: 10/23/12
Posts: 635
Loc: CA
Originally Posted By: Shannow
He doesn't need it, nor go look for it.

Right oil, right hole...problem is simply overthinking the issue


Correct. It's not a concern. Just an interest.

I was happy to find I could get just about every other indicator imagineable, just not oil pressure.

Top
#2812190 - 11/24/12 06:52 AM Re: OBDII & Oil Pressure [Re: EddieCairns]
SteveSRT8 Online   content


Registered: 10/10/08
Posts: 14523
Loc: Sunny Florida
Originally Posted By: EddieCairns
You will only get the oil pressure information if there is a an oil pressure sensor on the car. If it only has a switch to put the oil pressure warning light on and off it will not be able to display oil pressure via the ODBII system.

eddie


While I have not seen them all I have yet to see any newer car without an oil pressure switch at the least. Many cars that do NOT have a gauge still collect data from an oil pressure reading somewhere in the engine.
_________________________
"In a democracy, dissent is an act of faith."
J. William Fulbright
Best ET-12.79 @ 111 mph
4340 pounds, Street tires
Just like we go to Publix

Top
#2812192 - 11/24/12 06:55 AM Re: OBDII & Oil Pressure [Re: MarkStock]
NHGUY Offline


Registered: 10/09/11
Posts: 3295
Loc: USA
I wonder if VVT vehicles have to log psi data...afterall thats how the valve timing actuators work...oil pressure.

Top
#2812194 - 11/24/12 06:56 AM Re: OBDII & Oil Pressure [Re: MarkStock]
Donald Offline


Registered: 03/21/04
Posts: 13319
Loc: Upstate NY
You might even be thankful about the switch vs sensor. My Cummins engine has a $275 sensor and has + and - voltage going to it along with the sensor output. Unsure why. It feeds the ECM. And mine would go to midpoint with key on, engine running or not. So I replaced it.
_________________________
2001 Jeep Grand Cherokee Laredo 4.0 - PP & M1
1999 Dodge Ram 2500 w/Cummins - Rotella T6 & M1
Amsoil ATF in both vehicles & Magnefine filter.

Top
#2812245 - 11/24/12 07:48 AM Re: OBDII & Oil Pressure [Re: MarkStock]
Miller88 Online   content


Registered: 04/09/08
Posts: 6289
Loc: Onondaga County
You're going to have to tap and install an aftermarket oil pressure gauge. I am going to do just that when the Focus gets out of warranty.

Not having any problems with it, but I just like to watch it.
_________________________
'11 Focus PYB 45K
'00 Cherokee PYB 125K

Top
#2812301 - 11/24/12 08:44 AM Re: OBDII & Oil Pressure [Re: MarkStock]
pcoxe Offline


Registered: 05/14/07
Posts: 335
Loc: South Carolina
The octane rating on the pump is the minimum allowed. A dealer many years ago showed me a delivery slip where his "regular" fuel delivery was actually rated 90 octane, almost high enough to put in the premium tank.

Top
#2812304 - 11/24/12 08:46 AM Re: OBDII & Oil Pressure [Re: Shannow]
Trav Offline


Registered: 11/20/06
Posts: 9476
Loc: MA, Mittelfranken.de
Quote:
thy did the tests...and the tests won.

But but i need to check the oil pressure. I cant drive a bloody test. crackmeup
_________________________
ASE L1, Master. Deutsch Meisterbrief.

Top
#2812314 - 11/24/12 08:55 AM Re: OBDII & Oil Pressure [Re: MarkStock]
RF Overlord Offline


Registered: 11/08/03
Posts: 3092
Loc: Cape Cod, MA
As EddieCairns states above, most Ford vehicles, since at least 1990 in the US, don't have a real working OP gauge so that info will not be available in the OBDII data. Even if there is a "gauge", it's a fake that's been ballasted to read approx midway at all times and gets its info from a switch rather than a true sender. It was one of Ford's "better ideas" to hush up people too dumb to realise oil pressure is SUPPOSED to vary with RPM and temperature.
_________________________
Supercharged '03 Mercury Marauder - Trilogy Motorsports #61
PP 5W-30 / MC FL820S

Y2K Grand Marquis GS - daily driver
MC 5W-20 / MC FL820S

Top
Page 1 of 2 1 2 >