Info/instructions for Wells TPS201 TPS ** PICTURES!
 

Well I just sucessfuly adapted the duralast tps201 (autozone) onto my 1.6l manual throttle body. Now for some tips.

1) When you grind off one of the teeth in the tps to make it fit, make sure you grind off the right one! I almost messed it up real bad haha.

2) When you take the manual tps off, when disassembling it, the metal busing that the plastic switcher rides on is pressed into the plate, a couple of sockets and a vice works very well here.

3) Make sure you drill the holes for bolting the TPS onto the plate perfect or else everything will be misaligned when you try to put it on!

4) if you are going to use nuts and bolts to hold the tps on, the nuts will almost fit into the groove in the throttle body. You will need one of those hole enlargener bits for a dremal, and use it to enlarge the groove in the throttlebody.

Then the plate with the TPS will bolt onto the throttle body, and you can notch the plastic cover to allow the wires to come out, put the cover on, and it looks stock!

For the wires I cut the stock plug off, and soldered the:

TPS CAR FUNCTION

RED to WHITE AND GREEN (that should be right) 5V+
BLACK to BLACK (the middle wire on the 3 wire connector) GROUND
GREEN to Ran my own wire to the MS OUTPUT

Works perfect, go to tools in megatune and set WOT and no throttle, save, restart the MS, and enjoy a nice idle.


And yes, now my idle is so smooth, no matter how I try to upset it :)

Here are the pictures.

Pic 1 shows how it looks somewhat stock, and has the cover for protection

Pic 2 shows how its screwed in, on the throttle body behind those screws is where there is the lip that has to be enlarged.

Pic 3 is a farther away shot, you can see my wireing.

Attachment 212260

Attachment 212261

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Did your car have problems in the past w/ out a VTPS? A/C? Lightened flywheel? Bogging?

I have A/C, 8 lb flywheel.

Before the idle would bog sometimes but mostly it would go up then down then up then down then up then...... between 1200 and 400 rpm.

The TPS fixed it perfect.

Oh and I paid $27 total =)

:useless: not really but would like some pics if you have any

Hmm good to hear. No pics?

Ill snap a few when I get back from ocean city =)

i have one to adapt. havent gotten around to it. It came off a working one, that was laying around in a shop. I couldn't remove the two 7mm screws that held the plate in place so i only have the tps, but it shouldn't be too difficult to do on mine.

I definitely think that's significant of a worn 1.6 manual tps. Mine is driving me crazy right now, proving nearly impossible to adjust so that the signals are positioned properly to the pedal input. Once I get it right so it doesn't show idle up to 2200rpm or never show idle (and do the rhythmic bouncing idle), it will eventually break again and quit showing idle. If I floor the pedal (car off) and the start it back up it will work... for a bit. I've cleaned it and still no better. I think it's just mechanical piece of crap at 18 years of age. ;)

The manual TPS is just a switch, Ground and 12V+ are connected at idle, nothing is at any throttle, and at full throttle Ground and 5V+ are connected

Those are the 3 wires off the cars wireing harness, 12V, 5V, and ground. I used the 5V and ground when I adapted the variable TPS.

Pictures

Oh and for some reason now my launch control works, without the tps it dident. I have no clue why haha.

I know mr cramer says it can work without it, but this seemed to be my case as well.

I just wanted to share my pictures. Not sure what model TPS is it as it was pocketed. No markings on it.

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I also wanted to share Ben's original writeup, for those who don't know:

https://www.miataturbo.net/forum/sho...97&postcount=4

looks good!

works great too ;) anyone with a 1.6L and MS should be doing this.

word

Damn- that's a good fit, too bad you don't know what it's from. And no key work either.

I'm fairly positive Wells TPS4164 would work with the stock connector...

http://www.e-webcatalog.com/wells/Pa...ts\TPS4164.jpg

it would still sit high on the shaft, like mine, but it's possible all you'd have to do it attach it straight to the throttle body, just like the auto tps....not bad. worse case, you attach it like mine above and cut off the stock connector.

Still looking for the one I have.



hmm TPS452 looks like it has potential....would point in the right direction (down slightly)....probably bolts right up. Would probably want to call and verify it's a real linear tps, not a switch.

http://www.e-webcatalog.com/wells/Pa...rts\TPS452.jpg

keyway looks correct, hard to see....

Nice writeup! How did you figure this out?








(I'm such a googlebating:cjerk:ass)

I have a 99 going in my 1.6 What connector should I get to work with the stock 99 tps plug?

it's a 99 TB but you only have a 1.6L connector?

I used the silicone and electrical tap method....


http://www.boostedmiata.com/new_miat...m/CIMG1508.jpg

yeah, salvage yards don't like to give that shit away...so they can sell complete harnesses. I'm going to just go back and take some wire cutters...lol.


Nice computer loom, lulz.

Since you guys have been messing around with this lately, I've got a question for you. I picked up a TPS201 last night from Autozone, but I don't think it was the right part. The box it came it clearly said Wells TPS201, but the hole was about a 1mm to big in diameter. There were two ears inside the hole where some shaft might engage, but certainly not a Miata TB shaft.

Am I correct in thinking that without modification the TPS201 shouldn't fit on the TB shaft?

https://www.miataturbo.net/forum/sho...97&postcount=4

https://www.miataturbo.net/forum/sho...97&postcount=4

https://www.miataturbo.net/forum/sho...97&postcount=4

https://www.miataturbo.net/forum/sho...97&postcount=4

https://www.miataturbo.net/forum/sho...97&postcount=4

https://www.miataturbo.net/forum/sho...97&postcount=4

https://www.miataturbo.net/forum/sho...97&postcount=4

https://www.miataturbo.net/forum/sho...97&postcount=4

Thanks for the Braineak. That really helped. I'm well aware of that FAQ/Post and I know how to search/not be a n00b.

The part that autozone gave me didn't really have anything that I would have been able to file down. Is there another piece that might have fallen out of the box, that slides in to the TPS to grip the TB shaft? Do you guys think the wrong part was in the box?

there should be two little teeth....shave them down to make the shaft fit.

http://www.e-webcatalog.com/wells/Pa...rts\TPS201.jpg

Much more helpful, thank you. I think they did give me the wrong part.

On the one they gave me, the triangular ears in the picture are merely little stubs that don't extend into the shaft hole. I'll head up to autozone and tell the locals how dumb they are.

I really need to find the part number of the one I used.

I have a feeling it's this. but the colors of the wires are wrong and i cant see the keyway....

:(

http://cgi.ebay.com/ebaymotors/_Car-...=1218722967168

http://i18.ebayimg.com/05/i/000/d1/1a/75ad_1.JPG

That would cost more than I paid at autozone anyway.

I am using a Wells TPS 201 as above using the stock TPS meatal base and the connector on the base plate.

I can solder the black orange and green wires to the connector on the stock PTS base plate but don't know what goes where ( ? )

Are the above locations for a stock 1.6 N/A wiring ?

They should be the correct way the for MSPNP to accept it. Those followed Ben's writeup in the MSPNP FAQ page.

Thanks !!

So looking at the plate with the VTPS mounted on it - black to the midle tab on the plate connector orange to the bottom and green top ....?

Ok now for the million dollar question : Where in MT do you calibrate the VTPS ?

I must be tired :bang:

DoooooooooooD! Its Tools>Calibrate TPS

You must be worse about RTFM than me!

Thanks man !

My brain is toast right now :)

Ok I go to "get current" with the TB closed then floor it and click get current.
The numbers are 15 at idle and 167 at WOT. Clicked ok and saved the MSQ but the settings vanished. :eek5::vash:

Any ideas ?

After you have calibrated you dont see the numbers in there anymore. Right click on one of your gauges and go to Swap to and pick the throttle position gauge. Watch the % as you modulate the throttle. If its calibrated correctly, 0% will be closed, 100% will be WOT.

Great idea! Now, it works at idle but not when I start the car.
I
I fetched the numbers with the switch in acc position, saved it then I stated the car.

Did I wire something wrong ?

another thing is that I had to dissable closed loop idle control because the idle was bouncing up down like crazy... could this be related ?

Thanks:)

Yes it is likely related, if you look at the bottom of your closed loop idle screen there are TPS settings you'll need to adjust. Look around, you'll find them. I'm using some that JP gave me and they seem to be working mostly alright.

As for why your TPS doesn't work while the car is on, no idea man. Thats weird.

EDIT: Nvm.

Anbybody know if the colors in this pic are correct for a 91 cause this is what I did

https://www.miataturbo.net/forum/t12239/#post157397

I increased the DC adder because I remember reading about it ..... but the idle is still sort of lumpy.

I also want to back off the mechanical daspot because I think it may be sort of fighting with the MS settings etc.

What do you guys think ?

Ok, I swapped the gages to an ADC gage and it reads fine so it must be wired right. ;)

I also moved/rotated the plate where the VTPS is mounted so that I get a higher number at WOT - closed seems to be the same ( 16)

Now hopefully all I need is settings.:hsugh:

Joe !! Come out come out wherever you are :bowrofl:

DIY Autotune says to use the settings from a 1.8 ( ! ):ugh:

for the acceleration enrichments, yes, copy those settings. otherwise the only other thin that uses it, IIRC, is your overrun settings.

I'm sorry, what about my overrun settings ?

overrun has a "under TPS ADC" value you can now use.

Yes, that is the one thing I used soon as I connected the VTPS.

Thanks Man !!
:)

Tried all the idle 1.8 settings for starters and the car runs worse. Idle lopes up down.

I can temporarily make things better by changing things like minimum dc etc but then it does something else - wierd

Idle settings and starting settings shouldn't change...you didn't change you idle valve, injectors or displacement size.

What you should change are the acceleration enrichments from MAPdot to TPSdot and copying the 1.8L basemap settings, nothing else.

http://www.msextra.com/manuals/MS_Ex...s/AEWizard.GIF

Sorry, I meant to start with - before doing anything else.

Ok I will change to TPS dot

Thanks !!

you may want to copy the dashpot settings of the idle control at least. no other changes to the frequency and crap.

Well the daspot setting and the ADC adder were the items that showed promise intially..

You are saying use all the 1.6 Idle settings but change the daspot settings and leave everything else alone ?

si, senior.

Nope. I tried every combo I could think of. The darn thing either idles high, low or dips when I give it a load.

punch it.

No, it is probably something I'm doing wrong so I won't punch it :giggle: