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TPS wiring

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talonTSIDriver

15+ Year Contributor
1,229
16
Feb 21, 2005
Stevens Point, Wisconsin
I have one of those 70mm Ford TB's which has 3 wires coming from the TPS. The stock TPS has 4 wires. Does anyone know which ones go to which. The guy i bought this intake from had it wired into his 2g TPS but he did not remember which wires went to which ones. Here is a picture to help you better understand it.
 

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Ford TPS

Orange-5V power
Green-TPS
Black-Ground

If it was a 1G i could help you but since its a 2G you will need to look up a wiring schematics.
 
Stock TPS
Black
Yellow w/orange stripe
Green w/yellow stripe
Red

70mm TB TPS
Black
Green
Orange
 
Well does anyone know the wiring schematics for the stock 2g TPS. I just need to know what wire is the power, ground, and the TPS sensor wire on the stock 2g TPS wire harness.
 
Can anybody please help me on the TPS wiring?
 
black is ground. the green with the stripe is the power and should be at the opposite end from the ground when looking at the plug. THIS IS FOR A 2G TPS. I just wired mine yesterday. the other 2 are for your sensour output and ground. Not sure which is which but they are in the middle of the plug. hope i helped.
 
We got it. Took a voltage tester and figured them out. Yellow wire we didnt use and green was the signal wire.
 
For future reference from the FSM:

2G 4G63T TPS
1 - Green/Yellow (+5v Sensor Power)
2 - Brown/Red (TPS output voltage)
3 - Yellow/Red (IPS switch)
4 - Black (Ground)

1G 4G63T TPS
1 - Green/Red (+5v Sensor Power)
2 - Green/White (TPS output voltage)
3 - NC
4 - Green/Black (Ground)

Steve
 
For future reference from the FSM:

2G 4G63T TPS
1 - Green/Yellow (+5v Sensor Power)
2 - Brown/Red (TPS output voltage)
3 - Yellow/Red (IPS switch)
4 - Black (Ground)

1G 4G63T TPS
1 - Green/Red (+5v Sensor Power)
2 - Green/White (TPS output voltage)
3 - NC
4 - Green/Black (Ground)

Steve
i have one that has different cooler wire's. might be of the heat that makes them look different.
1- black/white
2- black/red
3- small white
4- black
so is 1- black/white(+5v power)
2- black/red (tps output)
3- small white(maybe IPS signal?)
4- black (Ground)???
 

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Ok im getting signal to the ecu but no readout on my laptop that it is working.i do a full sweep with the throttle and it just stays at zero? Any answer im lost now LOL.
 
Ok im getting signal to the ecu but no readout on my laptop that it is working.i do a full sweep with the throttle and it just stays at zero?

I'm afraid that's a bit too sketchy for me to understand. The only help I can offer is more questions.

What signal are you getting at the ECU, which pin/wire color @ the ECU.
What ECU are you using?
What software are you using.
 
well its pin 19 GW.. im getting volts to that pin but not over 5v on a full swing of throttle. im running a Eprom 90 eclipse front wheel drive turbo ECU with the i think you would say the v1 chip.. i was fine until i switched throttle bodys to a 95 idk man ahhh...
 
You're measuring 0-5v TPS voltages @ the ECU connector but the ECU is reporting 0v via DSMLink? Are you logging TPS raw?

i got it figured out thanks.. but it ran great for about 5 minutes and now win i REV it up it will only go to about 2500rpm drop down to 1000rpm so on and so fourth up and down up and down.. what did i break LOL. i looked over the boost piping dident see any lines popes so i hope its not my ecu i just bout it off ebay any ideas man??
 
i got it figured out thanks.
What was it? It might help someone else in the future to know.

it ran great for about 5 minutes and now when i REV it up it will only go to about 2500rpm drop down to 1000rpm so on and so fourth up and down up and down.. what did i break LOL.

Once again I'm not quite sure what your trying to describe. You could be talking about idle surging, where the idle speed pulses (surges) up and down by itself over and over. That's always caused by too much air getting past the throttle plate at idle. Lots of different ways but all result in a high idle which the ECU senses and cuts the fuel off so that the idle speed drops and once it falls the ECU turns the fuel back on and the idle speed climbs again.

Or are you just describing that the idle won't settle below 1000rpm and that you can't get the car to rev over 2500?
 
What was it? It might help someone else in the future to know.

Once again I'm not quite sure what your trying to describe. You could be talking about idle surging, where the idle speed pulses (surges) up and down by itself over and over. That's always caused by too much air getting past the throttle plate at idle. Lots of different ways but all result in a high idle which the ECU senses and cuts the fuel off so that the idle speed drops and once it falls the ECU turns the fuel back on and the idle speed climbs again.

Or are you just describing that the idle won't settle below 1000rpm and that you can't get the car to rev over 2500?

No it idles fine just when I mash the gas pedal to the floor it revs to 2500rpm and with my foot still on the pedal it drops to 1000rpm and I'm still holding my foot on the pedal it will jump back to 2500rpm

And for the tps there were 4 wires its kind of hard to explain because with this engine in the truck i had to cut the back side of the intake off and front part off and flip them from one side to the other.were i put the throttle body plat i needed to flip in a 180% so thats y i was having so much trouble. so pretty much all the wires were upside down LOL.
 
Last edited by a moderator:
For future reference from the FSM:

2G 4G63T TPS
1 - Green/Yellow (+5v Sensor Power)
2 - Brown/Red (TPS output voltage)
3 - Yellow/Red (IPS switch)
4 - Black (Ground)

1G 4G63T TPS
1 - Green/Red (+5v Sensor Power)
2 - Green/White (TPS output voltage)
3 - NC
4 - Green/Black (Ground)

Steve

Could I get clarification on this please? My 2G does not have an Idle Position Switch like the 1Gs. I am running a larger 1G throttle body and looking to replace the Throttle Position Sensor. Can I run the 3-wire TPS?
 
Could I get clarification on this please? My 2G does not have an Idle Position Switch like the 1Gs. I am running a larger 1G throttle body and looking to replace the Throttle Position Sensor. Can I run the 3-wire TPS?

The IPS is inside the TPS on a 2G not external like on a 1G.

Running a 1G TB gives you a bit of a choice, you can use the 2G TPS, keep the factory wiring, and adjust the TPS position based on where the IPS switches like you would with a 2G TB or you can pill the wire for pin 3 on the 2G TPS connector and extend it to connect to the 1G IPS and just set the TPS (either 1G or 2G) by it's output voltage.

What you can't do is use 1 1G TPS without making a provision for the IPS.
 
The IPS is inside the TPS on a 2G not external like on a 1G.

Running a 1G TB gives you a bit of a choice, you can use the 2G TPS, keep the factory wiring, and adjust the TPS position based on where the IPS switches like you would with a 2G TB or you can pill the wire for pin 3 on the 2G TPS connector and extend it to connect to the 1G IPS and just set the TPS (either 1G or 2G) by it's output voltage.

What you can't do is use 1 1G TPS without making a provision for the IPS.

Thank you for the clarification. My idle doesn't rev higher that the standard 900rpm of warm idle, even when starting up cold. Never has since we've had it.

Something changed on our recent road trip. Now you have to keep your foot in the gas until it is warm or it will die. Smells really rich.

FIAV block off plate and the ISC pintle moves backward when power is applied. No vacuum leaks and yet it has a very rough idle until the engine begins to warm up. Both temp sensors are new and it ran great for several days.

I will check the recently installed spark plugs tomorrow and measure the resistance on the ECU temp sensor to make sure it didn't go bad.
 
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