2/22/2006 4:21p

SO im just curoius if there is anything you can do to tweak your engine for more Hp Or TQ, Besides Keeping all fluids and everything in good shape.

Thanks For The Help

Marcus

2/22/2006 4:55p

TPS adjustment. Free mod and it will give you a smoother idle, better throttle response.

2/22/2006 5:04p

how it that done

2/22/2006 5:22p

yeah..i never heard of that...i got a new one, but how do you adjst. it?

2/22/2006 5:23p

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.

My voltage was 1.01 before, and .983 after.

2/22/2006 5:27p

did it really make that much of a diff?..i just slammed on a new one whan mine went crazy, but it still idles lumpy..also did a IAC and it was better for a while, but i still get lumps

2/22/2006 5:33p

It makes a world of difference. No BS.

2/22/2006 5:35p

im going out to do it now...in the dark..i dont care...ill tell ya how it goes...im pissed i never did this..

2/22/2006 8:11p

hell yea i soo gotta try that at work tomorrow.... i heard of a bunch of guys doing this before to their stangs just never got around to doin it..

2/22/2006 9:20p

NEAL THE HP FREAK - Can you help us with this. Does this work on N/A engines?

Wayne

2/22/2006 10:50p

Yes it does. It works on any Ford vehicle that is fuel injected that has a throttlebody.

2/23/2006 1:32p

hmm... i will have to try this.

Marcus