VonsWhite4x4
SuperCrewZer Member
Posts: 4,169
Registered:
4/6/03
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From: MN
Truck: 2000 F-150
Mods: 5
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2/22/2006 4:21p
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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
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fepony
SuperDuty Member
Posts: 526
Registered:
11/24/05
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From: FL
Mods: 41
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2/22/2006 4:55p
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TPS adjustment. Free mod and it will give you a smoother idle, better throttle response.
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dekan513
New Member
Posts: 12
Registered:
1/19/06
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From: KY
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2/22/2006 5:04p
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how it that done
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Dissociative
NOS Lightning Member
Posts: 16,393
Registered:
3/1/05
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From: IL
Truck: 2004 F-250
Mods: 21
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2/22/2006 5:22p
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yeah..i never heard of that...i got a new one, but how do you adjst. it?
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fepony
SuperDuty Member
Posts: 526
Registered:
11/24/05
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From: FL
Mods: 41
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2/22/2006 5:23p
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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.
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Dissociative
NOS Lightning Member
Posts: 16,393
Registered:
3/1/05
Status:
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From: IL
Truck: 2004 F-250
Mods: 21
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2/22/2006 5:27p
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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
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fepony
SuperDuty Member
Posts: 526
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11/24/05
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From: FL
Mods: 41
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2/22/2006 5:33p
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It makes a world of difference. No BS.
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Dissociative
NOS Lightning Member
Posts: 16,393
Registered:
3/1/05
Status:
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From: IL
Truck: 2004 F-250
Mods: 21
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2/22/2006 5:35p
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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.. 
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illness95
SuperCrewZer Member
Posts: 1,523
Registered:
12/5/05
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From: MI
Truck: 1998 F-150
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2/22/2006 8:11p
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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..
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Z 7 What 
NOS Lightning Member
Posts: 11,492
Registered:
8/12/02
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From: LA
Truck: 2003 F-150
Mods: 84
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2/22/2006 9:20p
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NEAL THE HP FREAK - Can you help us with this. Does this work on N/A engines?
Wayne
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fepony
SuperDuty Member
Posts: 526
Registered:
11/24/05
Status:
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From: FL
Mods: 41
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2/22/2006 10:50p
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Yes it does. It works on any Ford vehicle that is fuel injected that has a throttlebody.
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