tps voltage question
03-20-2008, 09:21 PM
#21
5th Gear Member
Join Date: Jan 2006
Location: Puerto Rico
Posts: 3,926
RE: tps voltage question
ORIGINAL: cholericfc
JUST SET IT AT THE DAMN FACTORY SETTING AND BE DONE WITH IT.....
JUST SET IT AT THE DAMN FACTORY SETTING AND BE DONE WITH IT.....
How can you set something that is not adjustable?...as specified by the designer and manufacturer?
03-21-2008, 01:23 AM
#24
5th Gear Member
Join Date: Jan 2006
Location: Puerto Rico
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RE: tps voltage question
ORIGINAL: aode08
where are your 3:90 gears joel? you were supposed to install them a few years ago, what happened?
where are your 3:90 gears joel? you were supposed to install them a few years ago, what happened?
03-21-2008, 01:27 AM
#25
3rd Gear Member
Join Date: Jan 2008
Location: Pennsylvania
Posts: 580
RE: tps voltage question
WTF...............MJR????????? help me out............
this guy DUDEBOY..... is just tryin to confuse you..... call FORD tech line.........SERIOUSLY..... **** this forum......
post another forum about somethine else...... dude"man" won't be there........=trouble maker
sry man...... ask questions elsewhere .......... theirs i guy on this thing that got kicked off - OBVIOUSLY - for a reason...............
this guy DUDEBOY..... is just tryin to confuse you..... call FORD tech line.........SERIOUSLY..... **** this forum......
post another forum about somethine else...... dude"man" won't be there........=trouble maker
sry man...... ask questions elsewhere .......... theirs i guy on this thing that got kicked off - OBVIOUSLY - for a reason...............
03-21-2008, 02:00 AM
#26
5th Gear Member
Join Date: Jan 2006
Location: Puerto Rico
Posts: 3,926
RE: tps voltage question
ORIGINAL: cholericfc
theirs i guy on this thing that got kicked off - OBVIOUSLY - for a reason...............
theirs i guy on this thing that got kicked off - OBVIOUSLY - for a reason...............
Hey .... if you want to set your TPS to .9999 vdc..... go ahead. If you want to do an unnecessary adjustment in your setup, feel free to do so.... but the FACT still stands....... or do you have any proof otherwise?.... if so, teach us. Do you have any FoMoCo documents, or ET proof that proves otherwise?.........BTW.... the DUDEBOY you mention, is NOT trying to confuse or make any trouble, but rather set things straight......unless you have any valid documentation/argument to prove him wrong..... which I don't see..
03-21-2008, 04:04 AM
#27
3rd Gear Member
Join Date: Nov 2007
Location: Washington, Seattle
Posts: 551
RE: tps voltage question
ORIGINAL: cholericfc
WTF...............MJR????????? help me out............
this guy DUDEBOY..... is just tryin to confuse you..... call FORD tech line.........SERIOUSLY.....**** this forum......
post another forum about somethine else...... dude"man" won't be there........=trouble maker
sry man...... ask questions elsewhere .......... theirs i guy on this thing that got kicked off - OBVIOUSLY - for a reason...............
WTF...............MJR????????? help me out............
this guy DUDEBOY..... is just tryin to confuse you..... call FORD tech line.........SERIOUSLY.....**** this forum......
post another forum about somethine else...... dude"man" won't be there........=trouble maker
sry man...... ask questions elsewhere .......... theirs i guy on this thing that got kicked off - OBVIOUSLY - for a reason...............
On other sites, people are generally willing to debate a tech topic.
Why aren't you willing to even discuss it in a meaningful way?
Please,
I am now growing tired of talking about myself, and my motivations[8D]
Unless you have some tech of significant value, then I am done with you... Your insults don't belong on a TECH board.
Now,
For some technical justification of what I have been commenting on...
Here are a couple of excerpts from the GUFB (the book Ford ecu programmers used when programming the Fox ecu)
http://www.fordfuelinjection.com/files/GUFB.pdf
[align=left]
[/align][align=left]The logic described below considers the current position of the throttle[/align][align=left]and compares its value to the RATCH, Closed Throttle, plus the change in[/align][align=left]throttle position from the last setting. If both flip-flops in the logic[/align][align=left]clear, then Part Throttle is set.[/align][align=left][/align][align=left]
[/align][align=left]OVERVIEW[/align][align=left]The throttle mode scheduler is used to determine what engine operating[/align][align=left]region is currently extant. The variable APT (At Part Throttle flag) is used[/align][align=left]to indicate throttle mode and is assigned the following values:[/align][align=left]Throttle Mode APT[/align][align=left]------------------ ---[/align][align=left]CLOSED THROTTLE -1[/align][align=left]PART THROTTLE 0[/align][align=left]WIDE OPEN THROTTLE 1[/align][align=left]The value of APT is determined by the logic shown on the following page.[/align][align=left]Briefly, throttle angle breakpoints, in terms of counts, are used to define[/align][align=left]the CLOSED/PART_THROTTLE and PART/WIDE_OPEN_THROTTLE transitions. Hysteresis[/align][align=left]is incorporated in both breakpoints to prevent jitter between modes.[/align][align=left]The variable RATCH is the output of a ratchet algorithm which continuously[/align][align=left]seeks the minimum throttle angle corresponding to a CLOSED THROTTLE position.[/align][align=left]This alleviates the necessity to set the throttle position sensor at an[/align][align=left]absolute position and compensates for system changes and differences between[/align][align=left]vehicles. The ratchet algorithm uses filtered throttle position for the[/align][align=left]determination of RATCH.[/align][align=left]A more detailed explanation of the throttle position ratchets and throttle[/align]position filter is contained in the SYSTEM EQUATIONS section.
...
[align=left]
[/align][align=left]DEFINITIONS
INPUTS
Registers:
- APT = Status of Part Throttle. (Set = -1 = Closed Throttle) (Set = 1 =
Wide Open Throttle) (Set = 0 = Part Throttle)
- RATCH = Closed throttle.
- TP = Position of Throttle.
INPUTS
Registers:
- APT = Status of Part Throttle. (Set = -1 = Closed Throttle) (Set = 1 =
Wide Open Throttle) (Set = 0 = Part Throttle)
- RATCH = Closed throttle.
- TP = Position of Throttle.
The logic described below considers the current position of the throttle
and compares its value to the RATCH, Closed Throttle, plus the change in
throttle position from the last setting. If both flip-flops in the logic
clear, then Part Throttle is set.
PROCESS
TP <OR= RATCH + DELTA ---------------|S Q -| Closed Throttle mode
| | APT = -1
TP <OR= RATCH + DELTA + HYST2 ------|C |
| --- ELSE ---
|
|
TP > (RATCH+THBP2+HYST2) -|S Q ------------| Wide Open Throttle
| | mode
TP <OR= (RATCH + THBP2) --|C | APT = 1
|
| --- ELSE ---
|
| Part Throttle Mode
| APT = 0
NOTE: PTSCR is initialized to 0.
previous APT = -1 ------------|
|
current APT NOT= -1 ----------|AND ---------| Set CTPTFG = 1
| | Closed Throttle to
CRKFLG = 1 -------------------| | Part Throttle transition
|
| --- ELSE ---
previous APT = -1 ------------| |
| |
current APT NOT= -1 ----------|AND ---------| Set CTPTFG = 1
| | Closed Throttle to
CRKFLG = 0 -------------------| | Part Throttle transition
| Set PTSCR = 1
|
| --- ELSE ---
|
| Set CTPTFG = 0
and compares its value to the RATCH, Closed Throttle, plus the change in
throttle position from the last setting. If both flip-flops in the logic
clear, then Part Throttle is set.
PROCESS
TP <OR= RATCH + DELTA ---------------|S Q -| Closed Throttle mode
| | APT = -1
TP <OR= RATCH + DELTA + HYST2 ------|C |
| --- ELSE ---
|
|
TP > (RATCH+THBP2+HYST2) -|S Q ------------| Wide Open Throttle
| | mode
TP <OR= (RATCH + THBP2) --|C | APT = 1
|
| --- ELSE ---
|
| Part Throttle Mode
| APT = 0
NOTE: PTSCR is initialized to 0.
previous APT = -1 ------------|
|
current APT NOT= -1 ----------|AND ---------| Set CTPTFG = 1
| | Closed Throttle to
CRKFLG = 1 -------------------| | Part Throttle transition
|
| --- ELSE ---
previous APT = -1 ------------| |
| |
current APT NOT= -1 ----------|AND ---------| Set CTPTFG = 1
| | Closed Throttle to
CRKFLG = 0 -------------------| | Part Throttle transition
| Set PTSCR = 1
|
| --- ELSE ---
|
| Set CTPTFG = 0
I realize this is a little on the tough side to read,
but if anyone can point out in this document how setting the tps idle output will affect idle quality or throttle response, I will listen eagerly.
Unfortunately that is not how the tps seems to work.
The variable 'RATCH' is constantly checking the closed throttle tps output. The lowest value seen during a run cycle is the Ratch value.
The other major use of the tps seems to be what I think of as 'Rate Change', or in other words, How quickly the tps value is changing
Rapid throttle angle change ratestell the ecu something different than slow throttle change rates.
If the ecu is looking at the 'RATE OF CHANGE' then the actual tps values don't have any significant value.......
I look forward to hearing responses,[/align][align=left]jason[/align]
03-25-2008, 08:11 PM
#29
5th Gear Member
Join Date: Jan 2006
Location: Puerto Rico
Posts: 3,926
RE: tps voltage question
ORIGINAL: cholericfc
the tps tells the computer how much air and fuel to send into the engine
the tps tells the computer how much air and fuel to send into the engine
How does the GUFB logic does that?
If the TPS is disconnected, will the engine not run?
WE are waiting.......
03-25-2008, 09:24 PM
#30
3rd Gear Member
Join Date: Nov 2007
Location: Washington, Seattle
Posts: 551
RE: tps voltage question
ORIGINAL: cholericfc
the tps tells the computer how much air and fuel to send into the engine
the tps tells the computer how much air and fuel to send into the engine
In a sincere effort to help you out...
Check out a book by the author Charles Probst...
http://www.amazon.com/Ford-Injection...096&sr=1-1
(This will take you to the 'early' '80-'87 book. There is another book for the 88-93 eec-iv systems, but I can't find a direct link for it right now...)
This one book will help you understand Ford EFI much better.