N3A1-18-911 TPS Substitute - RX7Club.com - Mazda RX7 Forum

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N3A1-18-911 TPS Substitute

Old 01-08-19, 03:59 PM
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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.
Amazon Amazon

I just ordered one for testing. Will update this post upon installation.
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Old 01-08-19, 04:22 PM
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Excellent, this is good information
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Old 01-09-19, 09:32 AM
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Looking online at a local Mazda dealer, the manual TPS is no longer available so great find Chuck!
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Old 01-09-19, 09:45 AM
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Great find - look forward to your thoughts when you get it
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Old 01-09-19, 01:23 PM
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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

Last edited by Tripple 7's; 01-09-19 at 01:23 PM. Reason: grammatical error
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Old 01-09-19, 02:04 PM
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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.
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Old 01-09-19, 09:31 PM
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Definitely interested in what you find Chuck

Regards,
Crispy
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Old 01-10-19, 11:08 AM
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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
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Old 01-17-19, 12:02 PM
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Today Amazon canceled the order due to item not available.
Wells told me production was stopped March 2018 with no info about remaking it..

Last edited by cewrx7r1; 01-17-19 at 12:12 PM.
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Old 01-17-19, 01:24 PM
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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.
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Old 01-28-19, 02:54 PM
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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.
Attached Files
File Type: pdf
TPS4107A-Lexus.PDF (143.8 KB, 10 views)
File Type: pdf
TPS481-MX6.pdf (703.9 KB, 13 views)
File Type: pdf
TPS4089B-FDRX7.PDF (1.59 MB, 13 views)
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Old 03-03-19, 10:38 PM
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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?
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Old 03-05-19, 07:44 PM
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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.
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Old 03-05-19, 07:56 PM
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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?
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Old 03-06-19, 01:51 PM
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Originally Posted by j a r o d View Post
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.

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Old 03-07-19, 09:18 AM
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Originally Posted by Ozurdin View Post
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.
KL01-18-911 is for the 93-2002 626/mx6 V6 cars, and the 96-98 MPV's
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Old 03-07-19, 09:31 AM
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so what's the consensus on the automatic TPS then?
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Old 03-07-19, 09:41 AM
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Originally Posted by arghx View Post
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.
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Old 03-10-19, 10:53 PM
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Mazda Japan have begun reproducing the FD TPS, should make life easier for most of you.
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Old 03-11-19, 01:31 PM
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^ I would like to hear more about this, the part still shows not available on Amayama..
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Old 03-12-19, 11:25 AM
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I've seen mention of the new sensor and some pictures on various blogs in the past month or so. Crudely translated:

Regarding the RX-7 (FD3S) throttle sensor

I think some people already know that answers came from parts dealers, but I will report only certain points.

The product number has been changed.
N3A1-18-911 → N3Y3-13-SLO

The price is also 15,400 → 40000

As it was newly developed, it seems to be the composition of sensor + 15 parts (accessory).

Also, because the sensor is new, it must be changed to a connector (accessory), so I think it will be essential to have a person with work skills where it has work skills.
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Old 03-12-19, 12:56 PM
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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
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Old 03-12-19, 06:56 PM
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Originally Posted by DaleClark View Post
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.
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Old 03-13-19, 10:15 AM
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Originally Posted by DaleClark View Post
I

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