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Poll

motorcraft TPS vs other name brand TPS

Total Members Voted: 9

Topic: Which tps do you prefer? (Read 2075 times) previous topic - next topic

Which tps do you prefer?

right now im having trouble with choosing a tps for my car.  It hesitates and stalls once in a blue. Tell me which ones you prefer
[SIGPIC][/SIGPIC]5.0 Standard
REBUILT MUSTANG AOD
Magnaflow mustang exhaust
BBK shorties
mark vii h pipe
BBK intake
KYB shocks , struts
moog springs

Which tps do you prefer?

Reply #1 –
we need more votes people
[SIGPIC][/SIGPIC]5.0 Standard
REBUILT MUSTANG AOD
Magnaflow mustang exhaust
BBK shorties
mark vii h pipe
BBK intake
KYB shocks , struts
moog springs

Which tps do you prefer?

Reply #2 –
my TC hesitates and stalls all the time.  but my tps is only alittle over a year old.  I'm running the napa tps.

Which tps do you prefer?

Reply #3 –
Why do you think it's the TPS causing the hesitation/stall?
11.96 @ 118 MPH old 306 KB; 428W coming soon.

Which tps do you prefer?

Reply #4 –
If possible, I buy Motorcraft...

TPS, TFI, PIP, ACT, ECT, EGR, etc...

Which tps do you prefer?

Reply #6 –
iv checked the timing and changed the IAC and changed the tps it works a little bette rbut i bought a KEM brand tps . Im wondering if motorcraft is better.
[SIGPIC][/SIGPIC]5.0 Standard
REBUILT MUSTANG AOD
Magnaflow mustang exhaust
BBK shorties
mark vii h pipe
BBK intake
KYB shocks , struts
moog springs

Which tps do you prefer?

Reply #7 –
Did you ever adjust the TPS base voltage?  Neither brand will work worth a  if you just bolt in on.  They MUST be adjusted.
Long live the 4-eyes!  - '83 Tbird Turbo - '85 Marquis LTS - '86 LTD Wagon

Which tps do you prefer?

Reply #8 –
Quote from: Chuck W;109032
  They MUST be adjusted.


Well, only if the voltage is not between 0.8 - 1.1 volts or so. The ECU zeros on the lowest voltage it sees & that becomes "0". This was done so that they would not have to adjust them at the factory. The only reason I give a limit is that less than ~0.5V & greater than ~1.2V, the ECU considers the TPS to be defective, otherwise it goes with it.
11.96 @ 118 MPH old 306 KB; 428W coming soon.

Which tps do you prefer?

Reply #9 –
Well if he didn't even check it...who knows....
Long live the 4-eyes!  - '83 Tbird Turbo - '85 Marquis LTS - '86 LTD Wagon

Which tps do you prefer?

Reply #10 –
An incorrectly adjusted TPS could be the cause of your problem. Get a multi meter and check the voltage. You can get a multi meter for ~$15 at Advance Auto Parts. If it's off and you adjust it you'll notice a difference. The car should run much better.
88 Thunderbird LX: 306, Edelbrock Performer heads, Comp 266HR cam, Edelbrock Performer RPM intake, bunch of other stuff.

Which tps do you prefer?

Reply #11 –
The TPS is not adjustable.
11.96 @ 118 MPH old 306 KB; 428W coming soon.

Which tps do you prefer?

Reply #12 –
Quote from: Cougar5.0;109213
The TPS is not adjustable.


The voltage is adjustable. Just hook up the volt meter to it and move it till it's at about .98 volts. When I first put mine on I just threw it on and took the car for a spin and it bogged bad. The TPS was at 1.6V with the throttle closed. I adjusted it to .98 volts and it's run great ever since. A volt meter will also tell you if the TPS voltage increase is smooth as the throttle opens or if it's jumpy. It should be smooth for proper operation.
88 Thunderbird LX: 306, Edelbrock Performer heads, Comp 266HR cam, Edelbrock Performer RPM intake, bunch of other stuff.

Which tps do you prefer?

Reply #13 –
I've never seen a TPS at 1.6V! In that case you would definitely want to put it into the range where the ECU doesn't think that it's failed (between 0.5V & 1.2V). It really isn't supposed to be adjustable though as the factory would never want to have to adjust such a thing in a production environment. One of the holes is oval - but only to account for mechanical tolerances. Most people have to drill it out to get any real "adjustment" out of it - does that seem like Ford intended it to be adjustable? With aftermarket TB's there is a variable being introduced that didn't exist at the factory. Also, some people adjust the throttle stop screw (which should almost never be touched) to try to "adjust" their idle. This, of course, will affect the TPS voltage and could push it out of range. Most good aftermarket TB companies (Accufab for instance) tell you to never touch the throttle stop screw as it is properly adjusted at their facility.

From the Ford strategy dospoogeent for A9L processor (applies to all Ford ECU's though):

Quote
The value of APT is determined by the logic shown on the following page. Briefly, throttle angle breakpoints, in terms of counts, are used to define the CLOSED/PART_THROTTLE and PART/WIDE_OPEN_THROTTLE transitions. Hysteresis is incorporated in both breakpoints to prevent jitter between modes.

The variable RATCH is the output of a ratchet algorithm which continuously seeks the minimum throttle angle corresponding to a CLOSED THROTTLE position. This alleviates the necessity to set the throttle position sensor at an absolute position and compensates for system changes and differences between vehicles. The ratchet algorithm uses filtered throttle position for the determination of RATCH.


Ford never intened to have the TPS be adjustable.
11.96 @ 118 MPH old 306 KB; 428W coming soon.

Which tps do you prefer?

Reply #14 –
well i tested the tps and it says its 1 dc then turn offf the engine and turn on the key and pressed teh gas and it went up to 5 dc and then down and it decreased and increased while bringing it up again
so thats good?
[SIGPIC][/SIGPIC]5.0 Standard
REBUILT MUSTANG AOD
Magnaflow mustang exhaust
BBK shorties
mark vii h pipe
BBK intake
KYB shocks , struts
moog springs