Fuel pressure accuracy via OBD-II? - LS1TECH



PCM Diagnostics & Tuning HP Tuners | AutoTap | Diablo | MAF Translator | HPP3 | FAST | Gen7 | Big Stuff 3
Sponsored by:
Sponsored by:

Fuel pressure accuracy via OBD-II?

Reply
 
Thread Tools Search this Thread
Old 01-25-2011, 07:54 AM   #1
Launching!
Thread Starter
iTrader: (5)
 
Join Date: Dec 2010
Location: Louisiana
Posts: 236
Default Fuel pressure accuracy via OBD-II?

What's the accuracy of the fuel pressure reading with a scanner/logger via the OBD-II port verses a manual in-line gauge?

I'm getting an OBD-II to iPhone cable today and i need to check my fuel pressure and was wondering if what i will be reading is fairly accurate.
elwood2 is offline   Reply With Quote
Old 01-25-2011, 08:19 AM   #2
TECH Junkie
iTrader: (50)
 
Join Date: Jan 2005
Location: Kathleen,GA
Posts: 3,173
Default

there are no data streams for fuel pressure
oange ss is offline   Reply With Quote
Old 01-25-2011, 08:29 AM   #3
Launching!
Thread Starter
iTrader: (5)
 
Join Date: Dec 2010
Location: Louisiana
Posts: 236
Default

They list Fuel pressure and Fuel Rail Pressure.

I guess they use information from other sensors along with a highly inaccurate algorithm that attempts to calculate fuel pressure then?

Similar to the horsepower and torque readouts.

Or the T/A's don't have that particular data stream?
elwood2 is offline   Reply With Quote
Old 01-25-2011, 08:53 AM   #4
TECH Veteran
iTrader: (2)
 
Old Geezer's Avatar
 
Join Date: Jun 2004
Location: GA, USA
Posts: 4,965
Default

"(as supported by vehicle manufacturers):"

Their disclaimer.
Old Geezer is offline   Reply With Quote
Old 01-25-2011, 09:17 AM   #5
Launching!
Thread Starter
iTrader: (5)
 
Join Date: Dec 2010
Location: Louisiana
Posts: 236
Default

Quote:
Originally Posted by Old Geezer View Post
"(as supported by vehicle manufacturers):"

Their disclaimer.
Damn, guess I gotta buy a gauge and learn to do even more research next time!
elwood2 is offline   Reply With Quote
Old 01-25-2011, 10:20 AM   #6
Banned
iTrader: (1)
 
Join Date: Feb 2008
Location: Rock Hill SC
Posts: 514
Default

Some of the newer vehicles have a sensor
CalEditor is offline   Reply With Quote
Old 01-25-2011, 12:56 PM   #7
Moderator
iTrader: (11)
 
jimmyblue's Avatar
 
Join Date: Mar 2002
Location: East Central Florida
Posts: 12,573
Default

I have cobbled up a Kavlico sender to a cheapo Actron
mechanical gauge (1/8 NPT fitting)and an aftermarket
fuel pressure gauge. Idea being to have in-cabin fuel
pressure visibility without in-cabin fuel. These two agree
well. The output could be tapped out and put to the EIO
interface as well, or you could cobble up your own bias
circuitry. You can get the transfer curve data V/PSI
from Kavlico. But I'd be looking for the same ground-offset
issues as with widebands.
jimmyblue is offline   Reply With Quote
Reply

Related Topics
Thread Thread Starter Forum Replies Last Post
What OBD-II scanners have data logging for knock retard? EXTINCT2000 PCM Diagnostics & Tuning 5 07-22-2011 09:54 PM
Possible to get oil pressure reading via OBD II? motohead400 Generation IV Internal Engine 2 11-17-2010 04:54 PM
Is 1995 Trans Am Use Obd-ii Or Which Code Reader? ZSU LT1-LT4 Modifications 6 02-26-2007 07:37 PM
Which Code Reader fit for 1995 Trans Am? OBD-II or what ZSU Pontiac Firebird 1967-2002 3 02-24-2007 06:35 PM
OBD-II to OBD-I JUICED96Z LT1-LT4 Modifications 12 10-02-2006 07:23 PM


Tags
accuracy, check, data, fuel, fuelpressure, fule, gauge, ii, obd, obd2, obdii, odbii, pressure, prisher, reading, supported

Thread Tools Search this Thread
Search this Thread:

Advanced Search

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 Off
Pingbacks are On
Refbacks are Off



All times are GMT -5. The time now is 10:06 PM.