N3A1-18-911 TPS Substitute
 

I have been searching for a replacement or substitute for our OEM TPS.
Was about to try adapting another vehicles TPS to a FD when I talked to Palm Tree Rotary.

Contact Us

They informed me that Wells Vehicle Electronics will be remaking their version real soon. http://www.wellsve.com/parts/index.php?PART_NO=TPS4089
and to order it from Amazon.
I just ordered one for testing. Will update this post upon installation.

Excellent, this is good information

Great find - look forward to your thoughts when you get it :icon_tup:

Here are some other helpful part numbers of aftermarket throttle position sensors available for reference.

Manual Transmission
1. Wells P/N TPS4089

2. Standard Motor Products P/N TH201 "Crosses to P/N N3A1-18-911, N3A2-18-911"
SMP-TH201
UPC 091769262129

3. Echlin Fuel System "NAPA"
P/N CRB 216707

4. BWD
P/N EC3240


Automatic Transmission
1. Beck / Arnley 158-1378
alternate P/N BCK-158-1378
UPC 49797880136

Is there an actual difference between the automatic and manual TPS sensors?

After I did my auto to manual swap, the same TPS sensor was used with zero difference in configuration so it makes me wonder why they're considered different. I see the automatic sensor is still availble, that's why I ask.

Definitely interested in what you find Chuck

Regards,
Crispy

Supposedly they are the same electronically and everything. Not sure why they made a difference. Maybe one has a slightly different shape - I think the auto trans dipstick is near that area, maybe a slight redesign for more clearance?

I think I've only ever worked on like 1 or 2 auto FD's so I'm not sure.

The good thing is the FD TPS is FAR better than the FC TPS. Those things constantly have problems.

Dale

Today Amazon canceled the order due to item not available.
Wells told me production was stopped March 2018 with no info about remaking it..

There are no actual physically identifiable differences between the Manual and Auto sensor, I even tune the TPS to the same voltage settings.

The dipstick is nowhere near the TPS, it is located on the passenger side of the UIM.

I made a substitute TPS using one for some Toyotas/Lexus's. Stock nbr is 89452-30140, AutoZone / Wells nbr is TPS4107.
Required a different connector and switching two of the 4 leads. It ran ok but the two voltages were way off, when rotated for first engagement, the low was 1.19 v, the high was 3.09, and when the throttle is fully
opened, the voltages were a little low.

Their are some Mazdas from the 90-200N year that use the same size as the TPS4107. Such as the MX6 - Wells TPS481.
I spent a couple hours on the net trying to find Toyota, Lexus, and MX6 manuals but with no results. This included multiple forums.

All we need is someone with access to old Mazda manuals to find similar voltage range as our FDs.

Hey, new to FD's just got mine running on a haltech ps1000 without a tps but it is going to need one.
I've was searching some of the part numbers Tripple 7's posted. Most with pages not found or $250
No good substitutes yet? and could i run haltechs HT-010408?

Just got a KL01-18-911 from a buddy who had it on his REW FC. he got it off a mazda van i think he said. its showing a few 93-97 mazda vehicles off the part number. He said it doesn't quite work with stock ecu but is tune able with haltech and what not. but its something to check out and play with for an alternative.

If you were to install a TPS without looking at voltage, what position would you start it in? Top screw in center of slotted hole? Biased one direction?

Slightly engaged. The stock FD TPS is about parallel the ground.

KL01-18-911 is for the 93-2002 626/mx6 V6 cars, and the 96-98 MPV's

so what's the consensus on the automatic TPS then?

Just use whichever FD one you can find, they're bolt-in replacements for each other with no changes required.

Mazda Japan have begun reproducing the FD TPS, should make life easier for most of you.

^ I would like to hear more about this, the part still shows not available on Amayama..

I've seen mention of the new sensor and some pictures on various blogs in the past month or so. Crudely translated:

Interesting!

I'm googling around a little with that part number. Found this -

https://recharge.jp/blog/culture/fd3stps/

Seems to say that the later TPS's (maybe 96+ or 99+?) are not plug in compatible with the 93-95 TPS. Dude is making an adapter harness to plug it in.

Dale

That is Hideyuki Nakamura's page, super cool guy heavily involved with the Team Hoshino 767B. The adapter he is making is for those who don't wish to modify the original harness, but as I understand it the replacement sensors will be coming with plug and pins.

the late cars have the same N3A1/N3A2 TPS as the early cars

The problem is that the remake OEM TPS sensor is slightly different plastic casing then the original. They changed the angle of the plug, and now it interferes with the coilpack or something along those lines.
My buddies are the ones with the Recharge page. They also are parts of the Parts Phoenix program to restore old NLA Mazda parts back into production by discussing it with OEM engineers etc..

its a Nippon Denso part, someone just needs to pick up the phone...

Part number mentioned earlier still does not show as valid anywhere. Would be great to get some complete information on this, rather than cryptic bits and pieces..

I had this in my amazon cart for months just went to order it and noticed it is unavailable. My TPS is showing signs of failure. I wrote Wells to inquire if they can run another batch and linked them to this thread. we'll see if anything comes of it. What are the chances of us rebuilding a TPS? Can we gut it and replace components?

The Echlin/Napa part 216707 has gone Obsolete in the Napa Canada system FYI. Also no stock in any of the Napa warehouses.

the new Mazda one? its active in Japan. it is not active in Mazda USA's system, and until it does you're not going to see it listed anywhere.

you are probably not going to like the price either, $398.30 today

Thanks for the info. I did not see it on Amayama's site using N3Y3-13-SLO, where do you see availability?

Agree on the price! Hopefully this comes down some.

its a Zero, n3y3-13-SL0 and not n3y3-13-SLo

there are exceptions, but parts professionals do not use o, q, s and i in part numbers as they are too easy to confuse with letters. Mazda even shies away from B.

Makes sense, thanks for the correction. I should have tried the substitution myself.

Well very pricey indeed, but at least a solution. Hopefully the cost comes down to closer to what the old sensor was priced at.

This is available
https://cimg5.ibsrv.net/gimg/www.rx7...3c10a1f30b.png

Says Temporarily out of stock again....you can order it but they dont know when it will ship

Anyone understand what he is doing with the EcoCPU?
https://recharge.jp/blog/ecocpu-buy/

Apparently this KL0118911 variant looks exactly like the N3A1-18-911 FD3S TPS, positioning and all!

Picked it up used for 25 bucks shipped with pigtail too.



KL0118911 TPS

https://cimg6.ibsrv.net/gimg/www.rx7...b1764c1223.jpg
https://cimg7.ibsrv.net/gimg/www.rx7...45dca472c6.jpg




VS


FD3S TPS


https://cimg5.ibsrv.net/gimg/www.rx7...cb92454a57.jpg

Neat! That may be from the MX-6 or something. Do you know what car it came from?

EDIT - answered my own question -

"Fits 626, Millenia, MPV, MX-3, MX-6"

Looks like about $180 or so for the part new.

Dale

but does it work?

^. That’s the $1M question...

I will let you know once I get it, just bought it today lol. I hope it works! Not the end of the world if it doesn't, I'll just use the other variant (not the same, but can still be calibrated in haltech)

This is what the seller had listed: "REMOVED FROM MX-6 IN GOOD WORKING ORDER." Sent message to seller to get the exact year.

Raceonly garage is advertising a pnp FD TPS replacement.

test it.............

I bought the TPS from Race Only. I think it's going to take a few weeks to get here though

How much was it?

It was 215 USD shipped.

Adjust it like a OEM TPS and give up the two low voltages and the two high voltages and if the engine runs normally.

Thomas,

What are the results? You should have received it by now and have installed it. :dunno:

On Oct. 31, I ordered an ARD alternator from RHD-Japan. It arrived in on 11 Nov. and I installed it on the 12th.

So, I did purchase one, however in that time I realized the one on my car want actually bad, it turned out to be the wax rid wasn't completely removed and was giving me a high idle randomly. Also then my motor popped and needs a rebuild.
i will take pics when I get back home however that won't be for about a week... It's larger than the factory one and looks harder to install, but apparently it's a new denso unit, from what car, I have no idea.