Throttle positioning sensor =frustration!

boblongtv · September 18th, 2009, 12:43 AM

Ok so basically I correctly installed my 65mm bbk throttle body awhile back. All went well except I broke my tps sensor off of my stock throttlebody.

So I made the trip to autozone and got a new one. The idle is to high, after I get going faster maybe 30-40mph and floor it I go no where. Ideas? Also the rpm stays at two grand and doesnt move when I floor it from 30-40mph.
I already put my stock one on and it does it still. Is there a special way to install the tps. There seems no way to adjust it at all. Thanks

jrzybullitt · September 18th, 2009, 02:03 AM

If I'm not mistaking...

I THINK you have to use a meter of some sorts to "zero" the TPS via the voltage flowing to it. In other words, it senses the throttle position by the amount of voltage it's receiving, so it needs to know that the voltage it's getting at idle is in fact the idle voltage. At least that's my understanding of it.

boblongtv · September 18th, 2009, 02:15 AM

Ok how do I measure that by splicing into the harness. AND hois there a way to adjust the voltage ? There are no bolts or such to loosen.

mattf0509 · September 18th, 2009, 02:48 AM

lol i would say take it somewhere and let them do it..

boblongtv · September 18th, 2009, 03:01 AM

Originally Posted by mattf0509

lol i would say take it somewhere and let them do it..

Hence that is what I am going to do. I was just curious to figure out wat the hell is wrong with it. This is prob the most frustrating thing I have ever tried to figure out!!!!!

jrzybullitt · September 18th, 2009, 03:07 AM

I don't know, probably through the port you plug diagnostic devices in. I was in your same position once and that's how a mechanic explained it to me. I didn't get it done, instead I put the old TPS back in & found my troubles were actually the IAC (Idle Air Control) which just swapped out easily.

I'm sure someone will come along here and know much more about it than I do.

boblongtv · September 18th, 2009, 03:11 AM

I think im gonna swap the aftermarket throttle body back on and just give it all to the mechanic. He can get as frustrated as he wants. AS long as he fixes it.

jrzybullitt · September 18th, 2009, 03:12 AM

Don't get frustrated, just leave it all together & let the mechanic do it. It should be a 5 minute fix.

boblongtv · September 18th, 2009, 03:14 AM

I hope so dude.

boblongtv · September 18th, 2009, 07:51 PM

What if I go to a junkyard and get one off of a busted up stang, the same year?

Big Daddys Stang · September 18th, 2009, 11:20 PM

Bad idle is usually caused by a dirty maf sensor or a defective tps, If I remember right I told you how to do it, If the tps is bad the information/voltage will be inaccurate, you need a phillips screw driver, a pin and a Voltmeter to read the voltages you need to see .98-99 volts....

boblongtv · September 19th, 2009, 12:18 PM

There are no screws to loosen to adjust it.

Big Daddys Stang · September 19th, 2009, 12:31 PM

Originally Posted by boblongtv

There are no screws to loosen to adjust it.

Then you will just have to check if you're getting the right .volts but if you said that it did the same with both could also be a bad connection, messed wires ....... Get them tested.

boblongtv · September 19th, 2009, 02:08 PM

I think its possibly the wrong tps for my car cause autozone people are retarded. But you never know could be the wires

JTs03v6 · September 19th, 2009, 03:22 PM

Originally Posted by boblongtv

I think its possibly the wrong tps for my car cause autozone people are retarded. But you never know could be the wires

It could very well be but you have to clock it so that makes it kind of hard to screw up. The windstar is identical but it is clocked backwards from the mustangs.
One question for you though?? I'm assuming you have an automatic trans??
The tps controls shifting, spark,and a/f so if something is wrong with it you will have problembs with power.
The tps is the drivers main link to the engine and pcm. As for communication.

boblongtv · September 19th, 2009, 05:28 PM

That is correct I have an auto. I step on the petal and get no where from 2-3 and overdrive is all jacked up as well. What do you mean by "clock it"

2002BLGT · September 19th, 2009, 07:35 PM

You might want to get it to a mechanic instead of banging your head against a wall

boblongtv · September 19th, 2009, 08:28 PM

I am on weds.

itschristorres8 · September 19th, 2009, 09:03 PM

you can adjust it a tad. I went through the same problem when I assembled the new motor. Idle was to low in my case. but you can slightly adjust it

JTs03v6 · September 19th, 2009, 10:28 PM

Originally Posted by 2002BLGT

You might want to get it to a mechanic instead of banging your head against a wall

Agreed. I'm sure it's a simple fix so I'm sure the shop wont charge you much.
It would be easy to diagnose if you could datalog throttle position absolute.

September 18th, 2009, 12:43 AM	#1
boblongtv Regular 1999 Mustang V-6 Slow for now Join Date: Jan 2008 Location: Easton, Maryland Posts: 172	Throttle positioning sensor =frustration! Ok so basically I correctly installed my 65mm bbk throttle body awhile back. All went well except I broke my tps sensor off of my stock throttlebody. So I made the trip to autozone and got a new one. The idle is to high, after I get going faster maybe 30-40mph and floor it I go no where. Ideas? Also the rpm stays at two grand and doesnt move when I floor it from 30-40mph. I already put my stock one on and it does it still. Is there a special way to install the tps. There seems no way to adjust it at all. Thanks

September 18th, 2009, 03:07 AM	#6
jrzybullitt Newbie 2008 Bullitt Join Date: May 2009 Location: Dirty Jersey Posts: 20	I don't know, probably through the port you plug diagnostic devices in. I was in your same position once and that's how a mechanic explained it to me. I didn't get it done, instead I put the old TPS back in & found my troubles were actually the IAC (Idle Air Control) which just swapped out easily. I'm sure someone will come along here and know much more about it than I do. Last edited by jrzybullitt : September 18th, 2009 at 03:10 AM.

September 18th, 2009, 11:20 PM	#11
Big Daddys Stang Hardcore Enthusiast 2000 V6 Join Date: Apr 2009 Location: San Diego, CA Posts: 1,904	Bad idle is usually caused by a dirty maf sensor or a defective tps, If I remember right I told you how to do it, If the tps is bad the information/voltage will be inaccurate, you need a phillips screw driver, a pin and a Voltmeter to read the voltages you need to see .98-99 volts.... __________________ *~For Newbies:* Rep are those little green squares, to give reputation click the gray scale, under the person you want to rep, then write why & name. Looking & buying soon a 01-04 Mustang GT

September 19th, 2009, 09:03 PM	#19
itschristorres8 V-SICKS 00 V6 & 09 GT 13.37@104.4mph--BONE stock GT Join Date: Aug 2006 Location: south florida Posts: 15,657	you can adjust it a tad. I went through the same problem when I assembled the new motor. Idle was to low in my case. but you can slightly adjust it __________________ The Devil & The Daily Daily-13.37@104.4mph V6- Stock bottom-439rwhp & 402rwtq 12psi 100oct built motor-497rwhp & 508rwtq 15psi pump

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September 18th, 2009, 02:03 AM	#2
jrzybullitt Newbie 2008 Bullitt Join Date: May 2009 Location: Dirty Jersey Posts: 20	If I'm not mistaking... I THINK you have to use a meter of some sorts to "zero" the TPS via the voltage flowing to it. In other words, it senses the throttle position by the amount of voltage it's receiving, so it needs to know that the voltage it's getting at idle is in fact the idle voltage. At least that's my understanding of it.

September 18th, 2009, 02:15 AM	#3
boblongtv Regular 1999 Mustang V-6 Slow for now Join Date: Jan 2008 Location: Easton, Maryland Posts: 172	Ok how do I measure that by splicing into the harness. AND hois there a way to adjust the voltage ? There are no bolts or such to loosen.

September 18th, 2009, 02:48 AM	#4
mattf0509 Regular 2000 3.8L v6 when i finished track was closed Join Date: Dec 2008 Location: Houston Posts: 112	lol i would say take it somewhere and let them do it..

September 18th, 2009, 03:11 AM	#7
boblongtv Regular 1999 Mustang V-6 Slow for now Join Date: Jan 2008 Location: Easton, Maryland Posts: 172	I think im gonna swap the aftermarket throttle body back on and just give it all to the mechanic. He can get as frustrated as he wants. AS long as he fixes it.

September 18th, 2009, 03:12 AM	#8
jrzybullitt Newbie 2008 Bullitt Join Date: May 2009 Location: Dirty Jersey Posts: 20	Don't get frustrated, just leave it all together & let the mechanic do it. It should be a 5 minute fix.

September 18th, 2009, 03:14 AM	#9
boblongtv Regular 1999 Mustang V-6 Slow for now Join Date: Jan 2008 Location: Easton, Maryland Posts: 172	I hope so dude.

September 18th, 2009, 07:51 PM	#10
boblongtv Regular 1999 Mustang V-6 Slow for now Join Date: Jan 2008 Location: Easton, Maryland Posts: 172	What if I go to a junkyard and get one off of a busted up stang, the same year?

September 19th, 2009, 12:18 PM	#12
boblongtv Regular 1999 Mustang V-6 Slow for now Join Date: Jan 2008 Location: Easton, Maryland Posts: 172	There are no screws to loosen to adjust it.

September 19th, 2009, 02:08 PM	#14
boblongtv Regular 1999 Mustang V-6 Slow for now Join Date: Jan 2008 Location: Easton, Maryland Posts: 172	I think its possibly the wrong tps for my car cause autozone people are retarded. But you never know could be the wires

September 19th, 2009, 05:28 PM	#16
boblongtv Regular 1999 Mustang V-6 Slow for now Join Date: Jan 2008 Location: Easton, Maryland Posts: 172	That is correct I have an auto. I step on the petal and get no where from 2-3 and overdrive is all jacked up as well. What do you mean by "clock it"

September 19th, 2009, 07:35 PM	#17
2002BLGT Enthusiast Join Date: Jun 2007 Location: Bedford VA Posts: 837	You might want to get it to a mechanic instead of banging your head against a wall

September 19th, 2009, 08:28 PM	#18
boblongtv Regular 1999 Mustang V-6 Slow for now Join Date: Jan 2008 Location: Easton, Maryland Posts: 172	I am on weds.

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