Discussion in 'Need for Speed!' started by RubySlow, August 26, 2007.
Well need a voltmeter to figure this out--do you have one?
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Yes I have a few, Ive never used it before But I believe it has a clip that can attach to the outside of the wire to read the voltage being sent? WIth black and red. Do I put the black on the black wire for ground?
ok for a minute forget the word ground-and think in the terms of reference instead. The black lead will be the "reference " lead--the red will read voltage in reference to the black--
now-set the meter to OHMs
disconnect the TPS connector
there are 3 prongs on the sensor itself
across 2 will be the max resistance-
across 2 will be a varying resistance--mark those 2 which vary with throttle pull-
now-turn the key on--
set the meter to read 20 volts (next scale over 10)
place the black lead on the neg battery terminal-read the voltage of all 3 wires in the tps connector (wire harness)
write down which is 5v.(might actually read -5v, but you get the idea)
now-hold the positive lead on that wire, and move the black lead to one of the other wires until you read 5v--this will be the signal ground--mark it.
the third wire is the signal -- mark it as such
now--back to the sensor--
pin on sensor which is unmarked is the signal ground-
the other 2 are V in and Vr out--it shouldn't matter which is connected to which.
Thanks a Million John, Without your support Id be spending Loot to have some grease monkey Jimmy rig this all. This is why I Joined the Elite!
Im printing this and Gonna tackle this tomarrow for sure..
print it again--I had to do a small edit--
Once I get the TPS sorted out.. is there any way this could become a Sticky cause It seems alot of people want this mod?
I will put it in the need for speed and sticky it---
be sure to remind me--
Yes I will I know that you Have A-D-D
Be sure to post what colors go to what so that my lazy ass doesn't have to dig my volt meter out. LOL
Okay So I tried to use the volt meter and I gave up..... sorry Someone should give me a lesson..
So I re solderd the Orig TPS Back onto the sensor and re attached it. It works alot better No more check engine light. AC works again
So Yes I would say This mod is worth it, I would say it has more HP.
When you mash the throttle at 65-70 the thing takes off I was moving at 105 today SCARY with my ride...
I recommend this Mod. Thank you John for your insight.
The next thing I want to do is have the Elbow Bored to match the TB.
The stocker TB elbow is pretty thin in the middle there. You will not be able to port it much before punching through the side of it.
Thanks for the advice!
Ok as you know I got the new CAI so here's what it all looks like...
Im gonna post a video tomarrow of the Engine Running...
I would have to say the Throttle Body Has made the Most Difference Out of all the mods I have so far!
here is the video of the new CAI and T-Body working together
Not sure why you guys had so much trouble with the TPS. When I did my 75mm BBK years back, I simply cut and re-positioned the ball stud similar to above and then bolted all the explorer parts to it (IAC, TPS, brackets, etc..) No brainer. I used a 87-93 t-body.
I am not converting a 90mm Accufab and will do same process.
One thing to add - be sure to dis-assemble the throttle rod from the assembly before welding to ensure no damage to the bushings / bearings. Also, upon re-assembly, make sure you damage the threads on the back side of the throttle plate - you don't want those screws passing through the engine - especially if you run a positive displacement S/C!
What!?!?! I thought foreign metal objects were good for our twin screws...
Okay so anyone wanting to know the wiring diagram for the TPS Explorer/Mustang Swap Here it is, This will help alot....
Explorer tps wiring
BRN/WHT - is for VOLT REF.
GRY/WHT - is for TP SENSOR INPUT
GRY/RED - is for SIG RETURN
ok and the Mustang 87-93 Tps wiring
ORG/WHT - is for VOLT REF.
DRK GRN/LT GREEN - is for TP SENSOR INPUT
BLK/WHT - is for SIG RETURN
OK, here's a question I feel like I should know the answer to:
Am I correct that nothing needs to be done to the PCM or anything to complete this mod? (I'm thinking the MAF info is sufficient to give the airflow data to the computer, right?!)
Thanks for all the great how-to knowledge everyone!
Every air flow change to an engine affects the tune needed. But the stock OBDII PCM's do very very well with mild changes, and some big changes. To get the last bit of power though, that requires new tuning, for any vehicle. So make all of the changes that you plan to, then do the PCM tune. Regards,
Help with 97 5.0l TPS/Throttle Body Pairing
What I have:
1. 97 5.0L AWD: rebuilt from the ground up (literally)
2. 94/95 Mustang 75mm BBK throttle body (no TPS, well, i do have the factory 97 explorer TPS that doesn't fit this throttle body)
Do I purchase the 94/95 Mustang TPS? And, which one since there are two part numbers. and how do I connect it to the 97 Explorer harness?
Thanks guys. I am so close to having this build completely done.
I want to put a 75mm TB and thought I could use a 86-93 mustang but can I use my explorer IAC and TPS? Or do I need mustang IAC and TPS? I think I can weld the ball like in your pics but well everything else work out? Thanks for your help?
I have a 99 5.0.
Welcome. You can use the Fox TB if you modify the throttle arm/ball etc, and use the Mustang TPS. The IAC's swap, but you have to do something about the other two things. I modified a spare 98 TPS to work on my 75mm TB, but it was not really worth the effort. Get the Fox TPS and get a pigtail to match it, modify the car wiring for that.
So did it help? Was there a noticeable difference in your performance? What else would you recommend to help with performance or just an increase in mpg? its a stock 5.0 I holled out the catalytic converters and added magna flow exhaust. I am just wanting to take it to the track on the weekends and have fun but right now it's pretty slow. I think it would run in the 17sec. I just kind of want a sleeper like farm truck but I am not gonna spend that kind of money.