New Mod? TPS Adjustment

[DF5.4]

I did this on my F150. If I remember they are torx screws. I don't remember what size. Just remember this does not change the power of the engine. It just calibrates the sensor.

 

[Spooky]

Spooky, what tools did you use when you did this? which wires did you tap to check voltage?

I used a phillips head to losen the screws on the TPS, a drill to open up the brass bushing and a multimeter to check the voltage. I followed the directions and used the positive lead of multimeter on grey w/ white stripe wire (middle wire) and the negative lead of multimeter on grey w/ red stripe (bottom wire).

 

[SOLISIMO]

I used a phillips head to losen the screws on the TPS, a drill to open up the brass bushing and a multimeter to check the voltage. I followed the directions and used the positive lead of multimeter on grey w/ white stripe wire (middle wire) and the negative lead of multimeter on grey w/ red stripe (bottom wire).

And this is exactly why Im not doing it confusing as hell

 

[toms89]

I did this on my old Dodge Dakota. It helped with throttle response, but I'm not sure it added any power. I didn't read the link but I'm assuming you drill out the bushing and slot one of the holes to allow for adjustment? You have to be careful (at least on the Dodge) because too high a reading could cause a code. The gain is also dependant on how far from optimal it is anyway. If it's already close, you probably won't notice much change.

I actually got a TPS at the junk yard and modded that one. I kept the stocker in a baggy in my truck incase I had to swap it back.

Be sure to use a flat washer under the screw head so you don't crack the plastic since the bushing is gone.

Exactly!! I have done this on my mustang and while it will improve throttle response,if it is off enough, it does not help with overall power. Not worth the time It can create issues if you get too close to that 1v threshold as voltage can fluctuate. I ended setting mine at .95 vs .98volts because occasionally I would get high idle situation as the voltage crept up for whatever reason.

This was on a different vehicle of course with an older generation cpu but I would assume the results would be the same.

 

[Explor2Exped]

I did the mod yesterday & it was so easy.

I know I posted this a while ago but I haven't had any time to do it.

I'm really pleased with the overall improvement also.

It now idles around 550 & the throttle response has improved greatly.

My old reading was 0.94 & now is between 0.97 & 0.98.

I would definitely recommend this mod.

 

[panda24619]

I did the mod yesterday & it was so easy.

I know I posted this a while ago but I haven't had any time to do it.

I'm really pleased with the overall improvement also.

It now idles around 550 & the throttle response has improved greatly.

My old reading was 0.94 & now is between 0.97 & 0.98.

I would definitely recommend this mod.

no write up with pictures to show exactly how its done so sol and others that cant read could follow. haha

 

[Explor2Exped]

no write up with pictures to show exactly how its done so sol and others that cant read could follow. haha

My first post gave the website with the write up.

Here's the website's write up:

The throttle position sensor is that small black plastic part with wires running to it that is connected to you throttle body. Now mine is different than yours because i'm supercharged but the principle is the same. I'll take some pics tomorrow and post them up. I'll explain what it does so you get the idea. You'll need a digital volt meter to check it and a screwdriver to adjust it. The optimim setting is .99 by loosening the 2 screws you can pivot the sensor ever so slightly. The object is to NOT exceed .99 although it usually comes from the factory way over that like 1.3 or under at .891 once you get it as close to .99 as you can the better the idle and response. It makes a world of difference. I'll post up some pics under TPS adjustment in my gallery.


Tools needed:

8mm socket & ratchet (to adjust idle set screw)

Phillips screw driver (to loosen TPS screws)

Multimeter (to measure TPS voltage)

Pins (to stick thru the insulation on the wires to the TPS) - optional

How to check your TPS voltage:

Turn key on, but don�t crank engine

Put positive lead of multimeter on grey w/ white stripe wire (middle wire)

Put negative lead of multimeter on grey w/ red stripe (bottom wire)

I used straight pins to poke through the insulation. You can also use them to back probe into the connector so as not to put holes in the wires.

You should get under .99 volts.. Anything over, and you'll need to adjust it.

Make sure you have your idle set where you want it by moving this set screw:

Tighten- increase idle

Loosen- decrease idle

Loosen the TPS screws slightly:

Turn the TPS clockwise to raise the voltage.

Turn the TPS counter clockwise to lower the voltage.

Move the TPS slightly, and check with the multimeter. When you get it to where you want it, tighten it back down.

 

[Explor2Exped]

Now myself, I actually did it a redneck way because I was having trouble with one bolt.

I grabbed a screwdriver, liquid wrench spray can, multimeter & 2 pins.

Now I didn't have normal pins, so I used actual pins that you put on your shirt. hah....

First I turned the key until the lights showed up. Don't turn it on. Just before start.

I couldn't unscrew the bottom screw to save my life even with a sheit load of liquid wrench & I didn't want to strip it so I just loosened up the top screw.

Next I took the two pins and stuck one in the middle wire & one in the bottom wire.

Then take your multimeter and put red (positive) on the middle pin and black (negative) on the lower pin to read the voltage.

I then grabbed the tps & pulled it clockwise really hard. I wouldn't recommend it but I couldn't loosen the bottom screw.

I check the multimeter then pull & repeat until I got as close to 0.98 as I could.

That's how I got the job done, but if you'd rather do it the other way the link is the first post or my other post is what the guy said.