Welcome to the The Garage Journal Board forums.

You are currently viewing our boards as a guest which gives you limited access to view most discussions and access our other features. By joining our free community you will have access to post topics, communicate privately with other members (PM), respond to polls, upload content and access many other special features. Registration is fast, simple and absolutely free so please, join our community today!

If you have any problems with the registration process or your account login, please contact contact us.

Go Back   The Garage Journal Board > The Garage > Free Parking

Sponsored Links (Register now to hide all advertisements)

Reply
 
Thread Tools Search this Thread Display Modes
Old 01-13-2011, 04:39 PM   #1
camaross
Senior Member
 
Join Date: Oct 2009
Posts: 502
Default What is fuel volume regulator

P0001 Fuel Volume Regulator Control Circuit/Open
P0002 Fuel Volume Regulator Control Circuit Range/Performance
P0003 Fuel Volume Regulator Control Circuit Low
P0004 Fuel Volume Regulator Control Circuit High

So what does fuel volume regulator do? Where is it located?

Thanks.
camaross is offline   Reply With Quote
Old 01-13-2011, 06:26 PM   #2
camaross
Senior Member
 
Join Date: Oct 2009
Posts: 502
Default Re: What is fuel volume regulator

Anybody?
camaross is offline   Reply With Quote
Sponsored Links (Register now to hide all advertisements)
Old 01-13-2011, 06:53 PM   #3
tonydanzah
Senior Member
 
tonydanzah's Avatar
 
Join Date: Nov 2009
Location: the champagne of people
Posts: 5,026
Default Re: What is fuel volume regulator

another odd one
__________________
Cheap,fast,reliable. You can chose only 2. Rip Ryan Dunn
http://www.usenglish.org/
tonydanzah is offline   Reply With Quote
Old 01-13-2011, 07:06 PM   #4
camaross
Senior Member
 
Join Date: Oct 2009
Posts: 502
Default Re: What is fuel volume regulator

Yes. I googled it for a while, and never find a very good answer.

The closest thing I find is fuel pressure regulator.

Quote:
Originally Posted by tonydanzah View Post
another odd one
camaross is offline   Reply With Quote
Old 01-13-2011, 07:07 PM   #5
adam728
Senior Member
 
adam728's Avatar
 
Join Date: Aug 2009
Location: Michigan
Posts: 2,654
Default Re: What is fuel volume regulator

I feel like you are reading thru a diesel manual and asking questions as you go? Maybe?
adam728 is offline   Reply With Quote
Old 01-13-2011, 07:19 PM   #6
camaross
Senior Member
 
Join Date: Oct 2009
Posts: 502
Default Re: What is fuel volume regulator

I am trying to educate myself about those trouble codes. I think it is very important to truly understand them all, if I plan to work in this field.

Quote:
Originally Posted by adam728 View Post
I feel like you are reading thru a diesel manual and asking questions as you go? Maybe?
camaross is offline   Reply With Quote
Old 01-13-2011, 07:27 PM   #7
aussiek2000
Senior Member
 
aussiek2000's Avatar
 
Join Date: Dec 2010
Posts: 3,436
Default Re: What is fuel volume regulator

I went into my shopkey account and the codes you listed do not exist in their database.
aussiek2000 is offline   Reply With Quote
Old 01-13-2011, 07:38 PM   #8
camaross
Senior Member
 
Join Date: Oct 2009
Posts: 502
Default Re: What is fuel volume regulator

Thank you for looking it up.

I found that one of the best place to search OBD codes is:

http://dtcsearch.com

Their codes are accurate and complete.


Quote:
Originally Posted by aussiek2000 View Post
I went into my shopkey account and the codes you listed do not exist in their database.
camaross is offline   Reply With Quote
Old 01-13-2011, 08:50 PM   #9
Stick
Senior Member
 
Stick's Avatar
 
Join Date: Dec 2007
Location: Alaska
Posts: 2,303
Default Re: What is fuel volume regulator

P0001-0004 are generic codes that as far as I know are a carryover from pre-OBD2 days, and I don't know of any manufacturer that uses them.

If you think about it, a fuel injector is what regulates fuel volume, and the modern equivalent is a P020x code for injectors. Most of the time you see a P0001-0004, you are using the wrong protocol to communicate with the ECM, and you have an issue with fuel delivery or control.

Last edited by Stick; 01-13-2011 at 09:15 PM.
Stick is offline   Reply With Quote
Old 01-13-2011, 09:00 PM   #10
RLRRLRLL
Senior Member
 
Join Date: Sep 2009
Location: Spearville Kansas
Posts: 1,070
Send a message via MSN to RLRRLRLL Send a message via Yahoo to RLRRLRLL
Default Re: What is fuel volume regulator

Well, idk if this will help. But along with fuel pressure, there needs to be enough volume for the engine to run correctly. Im not sure what a volume regulator is, but my guess would be that it helps maintain the correct volume. As even if you have proper pressure, you may not have enough volume.
RLRRLRLL is offline   Reply With Quote
Old 01-13-2011, 09:28 PM   #11
tonydanzah
Senior Member
 
tonydanzah's Avatar
 
Join Date: Nov 2009
Location: the champagne of people
Posts: 5,026
Default Re: What is fuel volume regulator

Quote:
Originally Posted by RLRRLRLL View Post
Well, idk if this will help. But along with fuel pressure, there needs to be enough volume for the engine to run correctly. Im not sure what a volume regulator is, but my guess would be that it helps maintain the correct volume. As even if you have proper pressure, you may not have enough volume.
the only time you will see volume mentioned on a modern car is a output/volume test on a fuel pump
__________________
Cheap,fast,reliable. You can chose only 2. Rip Ryan Dunn
http://www.usenglish.org/
tonydanzah is offline   Reply With Quote
Old 01-13-2011, 09:32 PM   #12
RLRRLRLL
Senior Member
 
Join Date: Sep 2009
Location: Spearville Kansas
Posts: 1,070
Send a message via MSN to RLRRLRLL Send a message via Yahoo to RLRRLRLL
Default Re: What is fuel volume regulator

ah, ok, thanks for correcting me. im just a tech student myself, and my teacher pounded in our heads that volume is needed to. live and learn i guess haha.
RLRRLRLL is offline   Reply With Quote
Old 01-13-2011, 09:34 PM   #13
tonydanzah
Senior Member
 
tonydanzah's Avatar
 
Join Date: Nov 2009
Location: the champagne of people
Posts: 5,026
Default Re: What is fuel volume regulator

Quote:
Originally Posted by RLRRLRLL View Post
ah, ok, thanks for correcting me. im just a tech student myself, and my teacher pounded in our heads that volume is needed to. live and learn i guess haha.
volume/flow is important, but you normally only see it used in relationship to fuel pumps
__________________
Cheap,fast,reliable. You can chose only 2. Rip Ryan Dunn
http://www.usenglish.org/
tonydanzah is offline   Reply With Quote
Old 01-13-2011, 09:40 PM   #14
RLRRLRLL
Senior Member
 
Join Date: Sep 2009
Location: Spearville Kansas
Posts: 1,070
Send a message via MSN to RLRRLRLL Send a message via Yahoo to RLRRLRLL
Default Re: What is fuel volume regulator

Quote:
Originally Posted by tonydanzah View Post
volume/flow is important, but you normally only see it used in relationship to fuel pumps
but wouldn't a "fuel volume regulator" show faulty readings or throw a code if it is in conjunction with the fuel pump? i don't think ive ever heard of a fuel volume regulator...so im just trying to learn a thing or two here, like others im sure.
RLRRLRLL is offline   Reply With Quote
Old 01-13-2011, 09:46 PM   #15
tonydanzah
Senior Member
 
tonydanzah's Avatar
 
Join Date: Nov 2009
Location: the champagne of people
Posts: 5,026
Default Re: What is fuel volume regulator

Quote:
Originally Posted by RLRRLRLL View Post
but wouldn't a "fuel volume regulator" show faulty readings or throw a code if it is in conjunction with the fuel pump? i don't think ive ever heard of a fuel volume regulator...so im just trying to learn a thing or two here, like others im sure.
like stick said it is probably an old carry over code. Often if you suspect the fuel system you check pressure. If pressure is good then you check pump in the form of a volume/output test.
__________________
Cheap,fast,reliable. You can chose only 2. Rip Ryan Dunn
http://www.usenglish.org/
tonydanzah is offline   Reply With Quote
Old 01-13-2011, 10:13 PM   #16
RLRRLRLL
Senior Member
 
Join Date: Sep 2009
Location: Spearville Kansas
Posts: 1,070
Send a message via MSN to RLRRLRLL Send a message via Yahoo to RLRRLRLL
Default Re: What is fuel volume regulator

ah ok, thanks for the info!
RLRRLRLL is offline   Reply With Quote
Old 10-01-2013, 10:37 AM   #17
Zeke
Senior Member
 
Zeke's Avatar
 
Join Date: Aug 2009
Location: Long Beach CA
Posts: 8,503
Default Re: What is fuel volume regulator

Visiting an old thread. I'm getting this reading on a '96 Jaguar XJ6. Almost all Google hits say the scanner interface is not working properly. I'm guessing that P0001 is the first code on the list and it gets pulled up falsely. I've read that P0001-4 is the same deal.

I have a post on the Jag forum going so we'll see what the Cat experts have to say.
__________________
Quote:
Originally Posted by James-W View Post
I brainwashed a woman once, I stomped on her douchbag.
Zeke is offline   Reply With Quote
Old 10-01-2013, 11:26 AM   #18
theoldwizard1
Senior Member
 
Join Date: Feb 2011
Location: SE MI
Posts: 11,693
Default Re: What is fuel volume regulator

First time I have seen this thread !

Many years ago, I was involved in some "philosophical" design discussions on EFI system fuel pressure regulation. Mechanical regulators, at the time, did the job quite well and at a low cost. The problem was, the pump capacity has to be designed for the maximum possible requirement (low fuel pressure at WOT is not good!). This meant that at low driving speed/extended idle, well over 90% of the fuel pumped to the engine was returned to the tank. All that pumping up to a hot engine compartment meant the fuel in the gas tank would get warmer and produce more vapor. This was at a time when the CARB/EPA wanted better vapor management.

Most schemes then (and I believe now) worked on providing the "exact" pressure required at the fuel rail so that no fuel had to be returned to the tank (a returnless fuel system).

An alternative design a friend and I came up with was a "minimal" fuel VOLUME return design. A "volume flow switch" (high/low or maybe high/medium/low) would be plumbed into the return line. If the return flow volume was high, a dropping resistor would be switched, via a relay, into the fuel pump power. Medium would swtch in a different value resistor and low would be no resistor, very similar to the HVAC fan speed. The only issue would be a "switch" that had a lot of hysteresis around the crossing points in order to minimize the cut in/out of the resistors (wear on the relay contacts).

Of course the people who design and manufacture electronic boxes won out because they could not make any money on such a simple design.


FYI, pulse width modulating the DC motor of a fuel pump does not result in a good closed loop control system. Anything below about 33% duty cycle results in effectively no pressure and anything above about 66% results in near maximum pressure. Not a large "control region" left !

Last edited by theoldwizard1; 10-01-2013 at 11:32 AM.
theoldwizard1 is offline   Reply With Quote
Reply

Thread Tools Search this Thread
Search this Thread:

Advanced Search
Display Modes

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

Forum Jump

Sponsored Links (Register now to hide all advertisements)


All times are GMT -5. The time now is 04:08 AM.