2001 3.8 tps

mangogirl205 · July 31st, 2011, 02:08 PM

Is this thing adjustable or not? The manual says it is not but people tell me that it is. I am having a serious problem with my TPS volts and well I don't think I can adjust it.The holes are covered in metal so I can't file it.
It is NEW by the way. It's reading 1.27 volts. So do I change the volts by adjusting the TB screw? It's a 65mm BBK TB.

If so does the key need to be turned but car off?
Or turn the car on and measure the volts while adjusting the TB screw?

Gas mileage is CRAP too btw.

I just can't get it to read anywheres between .97-.99

My car is bucking when I come to a stop and some times the idle is high and when I shift my car from park to drive it kicks forward.It's like my car is falling apart and I always maintain it

.

RedDevilGT · July 31st, 2011, 02:20 PM

Find the wire on your TPS so you can check how much voltage is going through it. The red lead on your multimeter will go to that wire. Then you'll have to put the black multimeter wire to a good engine ground. Now to check the voltage turn on your multimeter and make sure all of the wires are hooked up right. Then turn the ignition key to the on position, but don't start the car. You should be getting a reading on your multimeter. It should be .98-.99 volts I believe. If its not, then you need to loosen the screws on the TPS and move it around until you get it right. When its at the right voltage tighten the screws and re-check it.

mangogirl205 · July 31st, 2011, 02:58 PM

Originally Posted by Mattman

Find the wire on your TPS so you can check how much voltage is going through it. The red lead on your multimeter will go to that wire. Then you'll have to put the black multimeter wire to a good engine ground. Now to check the voltage turn on your multimeter and make sure all of the wires are hooked up right. Then turn the ignition key to the on position, but don't start the car. You should be getting a reading on your multimeter. It should be .98-.99 volts I believe. If its not, then you need to loosen the screws on the TPS and move it around until you get it right. When its at the right voltage tighten the screws and re-check it.

The 1.27 volts is from the wire in the middle on the TPS,the one that sends the signal to the TPS. I did turn the key with ignition off and used the engine as my ground.

I'll try and loosen the TPS screws but there is not much lead way.It only jiggles very slightly.

Let me go try that again.

mangogirl205 · July 31st, 2011, 03:32 PM

Okay..that 1.27 volts was from this morning after I adjusted the TPS and the TB screw.
I just checked it again AFTER I came back from the store and it now reads 1.19 volts. So that dropped .08.

I did what you said and jiggled the TPS as much as I humanly can..lol.It reads 1.12 volts now. SO should I disconnect the battery? Because that is what I did the first time I changed it. And it seems to go down a couple volts after the first test drive.

That is the best I can get it. That's a new TPS.

What next?

And thanks for the info.

Just a quick question...should their be a gasket between the TPS and TB?It seems when I pull the TPS OUT and away from the TB the volts read lower.It's only after I tighten it that it jumps up a few volts and I think every single one counts!

ESG-642T · July 31st, 2011, 05:11 PM

what happens if you get rid of the throttle body for the stock one?

mustangmike! · July 31st, 2011, 05:20 PM

OP, do i remember an old post of yours about having bought a tuner and trying to tune this car and finding out the ECU was locked ?

Anyways, next question: What idle RPM does your P ride at ? and what does it do in D. Let it be warm ...

And Id first go to the TPS switch and make sure its tightened into place ...

RedDevilGT · July 31st, 2011, 05:21 PM

I think the OP made a seperate thread saying it idles at 850-900.

mustangmike! · July 31st, 2011, 05:33 PM

does me no good,
I need both D and P

mustangmike! · July 31st, 2011, 05:33 PM

does me no good,
I need both D and P

RedDevilGT · July 31st, 2011, 05:48 PM

Here ya go Mike. The last post TPS volts ..ugh!!! Plz read.

mangogirl205 · July 31st, 2011, 06:00 PM

Originally Posted by mustangmike!

OP, do i remember an old post of yours about having bought a tuner and trying to tune this car and finding out the ECU was locked ?

Anyways, next question: What idle RPM does your P ride at ? and what does it do in D. Let it be warm ...

And Id first go to the TPS switch and make sure its tightened into place ...

Yeah stupid tuner didn't work...that was me.

Anyways in park it idles when it's warm around 850 ish RPM. And in drive at a stop light idles around 900 RPM.

TPS is nice and tight.

I am going to go unhook the battery,maybe it will help reset the TPS.I did get it down to 1.12 volts. But it seems to change around.After a drive it's up or it can be down..it switches. Earlier it read 1.47. But it never comes anywheres to .98-.99.

Sorry for the other post,I placed it in the wrong forum.

mustangmike! · July 31st, 2011, 06:01 PM

thats part of your problem. Park idle should be higher then D idle...

mangogirl205 · July 31st, 2011, 06:31 PM

Originally Posted by mustangmike!

thats part of your problem. Park idle should be higher then D idle...

Okay,I haven't driven my car since I got the volts down to 1.12 volts.Maybe it will be different.

I will be leaving soon so I will get a more accurate reading for you.

I'll check in Park, Drive and RPM's at 35 and 45 MPH. And I will let you know what they are.

Hopefully we can figure out my problem.

Thank you so much for taking your time out to try and help me.I really appreciate it.

Also,what are normal RPMs for the above?

mustangmike! · July 31st, 2011, 06:38 PM

thats a good question

I have no idea.

Park at 850 shouldn't be bad, put your D idle down to 700.

Higher drive RPM means its putting more power down to your tq converter when you put it in so its like holding the brake and tapping the gas, its gonna try and pull forward. If you set the RPM lower then P then it will back the throttle off when going into gear and not pull.

mangogirl205 · July 31st, 2011, 09:38 PM

Originally Posted by mustangmike!

thats a good question
I have no idea.

Park at 850 shouldn't be bad, put your D idle down to 700.

Higher drive RPM means its putting more power down to your tq converter when you put it in so its like holding the brake and tapping the gas, its gonna try and pull forward. If you set the RPM lower then P then it will back the throttle off when going into gear and not pull.

Might be a stupid question,but how do I set the Drive Idle?

Okay here are the numbers and I went for 3 seperate drives just to make sure.

PARK RPM'S-650-700 when warm
REVERSE RPM'S-650
STOP @ RED LIGHTS RPM'S-1'st time 650,2'nd 900/950, 3'rd 900/950
45 MPH RPM'S-1400
TPS VOLTS-1.16-Key in Ignition engine off.Middle wire. It should be .97-.99 but it's not.

Another thing I noticed was that After all 3 driving cycles and I put the car in park in my driveway the RPM'S shoot up to 1300-1500 RPM'S.I then have to give it one good REV and that brings it back down to 650 RPM'S.

Alright,so what do you think?
And please be very descriptive If there is something that I have to adjust.So I know what I have to do.

OR should I just let a mechanic mess with it.IF so tell me what I need to tell him (he's a friend of a friend). But I would like to try and do it myself.

Thank you so much,Christina

I am using this website as my guide. I am checking the wire in the middle.

http://easyautodiagnostics.com/ford_...tps_test_1.php

mangogirl205 · July 31st, 2011, 09:48 PM

Also on a side note,when the car was stock it idled in park around 520-550. And then after I installed my BBK cai it idled alot lower.It went a hair line below 500 RPM'S.And that was 2 years ago.

With the TB upgrade and Accufab spacer it's kinda throwing everything off.With that said...what should it be at and why can't I seem to match the TPS volts to any of it?

**Could a stuck or bad IAC cause high volts on a TPS?**

mustangmike! · August 1st, 2011, 05:43 AM

got me, next id start looking into cleaning out the IAC, and possibly the MAF (be very carefull with that! expensive and easy to break)

and how but i thought oyu said something earlier about having changed your idle rpms ? maybe not ...

But you'd need a tuner generally, but you have already ran into problems there ...

But id look into cleaning all that stuff and then id get to reading on my mods ... 65mmTB on your car isn't going to help at all really ... TB spacer doesn't help at all either.

Green_6er · August 1st, 2011, 08:33 AM

put ur stock shit back on and see if it fixes it.

mangogirl205 · August 2nd, 2011, 12:55 AM

Originally Posted by Green_6er

put ur stock shit back on and see if it fixes it.

lol..stock is back on and it is FIXED

Thanks again everyone.

RedDevilGT · August 2nd, 2011, 01:08 AM

Glad we could be of some help

July 31st, 2011, 02:08 PM	#1
mangogirl205 Regular 2001 V6 Mustang Vert. Join Date: May 2011 Location: MD Posts: 266 iTrader: 0 reviews	2001 3.8 tps Is this thing adjustable or not? The manual says it is not but people tell me that it is. I am having a serious problem with my TPS volts and well I don't think I can adjust it.The holes are covered in metal so I can't file it. It is NEW by the way. It's reading 1.27 volts. So do I change the volts by adjusting the TB screw? It's a 65mm BBK TB. If so does the key need to be turned but car off? Or turn the car on and measure the volts while adjusting the TB screw? Gas mileage is CRAP too btw. I just can't get it to read anywheres between .97-.99 My car is bucking when I come to a stop and some times the idle is high and when I shift my car from park to drive it kicks forward.It's like my car is falling apart and I always maintain it .

July 31st, 2011, 02:20 PM	#2
RedDevilGT SG 2005 Mustang GT 2001 Mustang V6 Join Date: Dec 2007 Location: Phoenix, AZ Posts: 4,139 iTrader: 0 reviews	Find the wire on your TPS so you can check how much voltage is going through it. The red lead on your multimeter will go to that wire. Then you'll have to put the black multimeter wire to a good engine ground. Now to check the voltage turn on your multimeter and make sure all of the wires are hooked up right. Then turn the ignition key to the on position, but don't start the car. You should be getting a reading on your multimeter. It should be .98-.99 volts I believe. If its not, then you need to loosen the screws on the TPS and move it around until you get it right. When its at the right voltage tighten the screws and re-check it. __________________ 01' V6: SCT tuned, Dual Flowmasters & H-pipe, 8000k 35w HID's, Steeda Short Shifter, BBK CAI, Eibach pro-kit, 3.73's and t-lok. 05' GT: SCT tuned, C&L Racer, FRPP cams, Pypes Pype Bomb's, Shorty Antenna, Painted Mirror covers, Decklid Panel Last edited by RedDevilGT; July 31st, 2011 at 02:31 PM.

July 31st, 2011, 05:11 PM	#5
ESG-642T [8MINUS2] 2002, Ford, v6 Join Date: Feb 2007 Location: TEXAS Posts: 12,319 iTrader: 0 reviews	what happens if you get rid of the throttle body for the stock one? __________________ Hi, You can call me Kyle Random ESG fact: Had a prochamber on his v6 before it was popular. WTB: v6 BBK valve covers

July 31st, 2011, 05:20 PM	#6
mustangmike! I Post Entirely Way Too Much 2004,1994,1967 14.37 @ 96 Join Date: Aug 2008 Location: Texas Posts: 6,018 iTrader: 1 reviews	OP, do i remember an old post of yours about having bought a tuner and trying to tune this car and finding out the ECU was locked ? Anyways, next question: What idle RPM does your P ride at ? and what does it do in D. Let it be warm ... And Id first go to the TPS switch and make sure its tightened into place ... __________________ 227whp N/A V6 Now w/ 8th Mile 8s ! How To Jmod Your Late Model 4R70W

July 31st, 2011, 05:21 PM	#7
RedDevilGT SG 2005 Mustang GT 2001 Mustang V6 Join Date: Dec 2007 Location: Phoenix, AZ Posts: 4,139 iTrader: 0 reviews	I think the OP made a seperate thread saying it idles at 850-900. __________________ 01' V6: SCT tuned, Dual Flowmasters & H-pipe, 8000k 35w HID's, Steeda Short Shifter, BBK CAI, Eibach pro-kit, 3.73's and t-lok. 05' GT: SCT tuned, C&L Racer, FRPP cams, Pypes Pype Bomb's, Shorty Antenna, Painted Mirror covers, Decklid Panel Last edited by RedDevilGT; July 31st, 2011 at 05:33 PM.

July 31st, 2011, 03:32 PM	#4
mangogirl205 Regular 2001 V6 Mustang Vert. Join Date: May 2011 Location: MD Posts: 266 iTrader: 0 reviews	Okay..that 1.27 volts was from this morning after I adjusted the TPS and the TB screw. I just checked it again AFTER I came back from the store and it now reads 1.19 volts. So that dropped .08. I did what you said and jiggled the TPS as much as I humanly can..lol.It reads 1.12 volts now. SO should I disconnect the battery? Because that is what I did the first time I changed it. And it seems to go down a couple volts after the first test drive. That is the best I can get it. That's a new TPS. What next? And thanks for the info. Just a quick question...should their be a gasket between the TPS and TB?It seems when I pull the TPS OUT and away from the TB the volts read lower.It's only after I tighten it that it jumps up a few volts and I think every single one counts!

July 31st, 2011, 05:33 PM	#8
mustangmike! I Post Entirely Way Too Much 2004,1994,1967 14.37 @ 96 Join Date: Aug 2008 Location: Texas Posts: 6,018 iTrader: 1 reviews	does me no good, I need both D and P __________________ 227whp N/A V6 Now w/ 8th Mile 8s ! How To Jmod Your Late Model 4R70W

July 31st, 2011, 05:48 PM	#10
RedDevilGT SG 2005 Mustang GT 2001 Mustang V6 Join Date: Dec 2007 Location: Phoenix, AZ Posts: 4,139 iTrader: 0 reviews	Here ya go Mike. The last post TPS volts ..ugh!!! Plz read. __________________ 01' V6: SCT tuned, Dual Flowmasters & H-pipe, 8000k 35w HID's, Steeda Short Shifter, BBK CAI, Eibach pro-kit, 3.73's and t-lok. 05' GT: SCT tuned, C&L Racer, FRPP cams, Pypes Pype Bomb's, Shorty Antenna, Painted Mirror covers, Decklid Panel

July 31st, 2011, 06:01 PM	#12
mustangmike! I Post Entirely Way Too Much 2004,1994,1967 14.37 @ 96 Join Date: Aug 2008 Location: Texas Posts: 6,018 iTrader: 1 reviews	thats part of your problem. Park idle should be higher then D idle... __________________ 227whp N/A V6 Now w/ 8th Mile 8s ! How To Jmod Your Late Model 4R70W

July 31st, 2011, 06:38 PM	#14
mustangmike! I Post Entirely Way Too Much 2004,1994,1967 14.37 @ 96 Join Date: Aug 2008 Location: Texas Posts: 6,018 iTrader: 1 reviews	thats a good question I have no idea. Park at 850 shouldn't be bad, put your D idle down to 700. Higher drive RPM means its putting more power down to your tq converter when you put it in so its like holding the brake and tapping the gas, its gonna try and pull forward. If you set the RPM lower then P then it will back the throttle off when going into gear and not pull. __________________ 227whp N/A V6 Now w/ 8th Mile 8s ! How To Jmod Your Late Model 4R70W

July 31st, 2011, 09:48 PM	#16
mangogirl205 Regular 2001 V6 Mustang Vert. Join Date: May 2011 Location: MD Posts: 266 iTrader: 0 reviews	Also on a side note,when the car was stock it idled in park around 520-550. And then after I installed my BBK cai it idled alot lower.It went a hair line below 500 RPM'S.And that was 2 years ago. With the TB upgrade and Accufab spacer it's kinda throwing everything off.With that said...what should it be at and why can't I seem to match the TPS volts to any of it? Could a stuck or bad IAC cause high volts on a TPS? Last edited by mangogirl205; July 31st, 2011 at 11:18 PM.

August 1st, 2011, 05:43 AM	#17
mustangmike! I Post Entirely Way Too Much 2004,1994,1967 14.37 @ 96 Join Date: Aug 2008 Location: Texas Posts: 6,018 iTrader: 1 reviews	got me, next id start looking into cleaning out the IAC, and possibly the MAF (be very carefull with that! expensive and easy to break) and how but i thought oyu said something earlier about having changed your idle rpms ? maybe not ... But you'd need a tuner generally, but you have already ran into problems there ... But id look into cleaning all that stuff and then id get to reading on my mods ... 65mmTB on your car isn't going to help at all really ... TB spacer doesn't help at all either. __________________ 227whp N/A V6 Now w/ 8th Mile 8s ! How To Jmod Your Late Model 4R70W

August 2nd, 2011, 01:08 AM	#20
RedDevilGT SG 2005 Mustang GT 2001 Mustang V6 Join Date: Dec 2007 Location: Phoenix, AZ Posts: 4,139 iTrader: 0 reviews	Glad we could be of some help __________________ 01' V6: SCT tuned, Dual Flowmasters & H-pipe, 8000k 35w HID's, Steeda Short Shifter, BBK CAI, Eibach pro-kit, 3.73's and t-lok. 05' GT: SCT tuned, C&L Racer, FRPP cams, Pypes Pype Bomb's, Shorty Antenna, Painted Mirror covers, Decklid Panel

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