ducktape

I could not for the life of me find anyone willing to part with a TPS pigtail for the stock REW TPS, and I've never once seen an FD in yard. A couple of guys mentioned finding the mystery plug in the wiring harness in a Geo Tracker, but I didn't have any luck. I decided to make my own bracket, and mount the Haltech supplied TPS onto my REW throttlebody. Here's what I came up with:



First I stripped the TB of all elements I found to be unnecessary including:

The stock thermo switch and the thermostwitch actuator on the static arm

The stock bellcrank, replaced with 1/2 of a TII bellcrank. (custom brass spacer)

The (throttle trim?) dashpot and arm

The stock TPS sensor, actuation arm, and baseplate



I then gently filed the inside of the sensor to accomidate the larger bore and installed the sensor against the base of the throttle stop. The sensor is partially actuated in this configuration, most likely around 10-20% throttle which can be compensated for with the Haltech software. Sorry, that's the way it is.



Here's the plate I made from stock aluminum. It's not laser perfect, nor is it terribly exciting to look at. I'll send my measurements to anyone who wants to try to make it.



The sensor installed on the plate.



Here is the whole thing in place.



You can see I spaced out the plate with a couple of 1/4" nuts for time sake. I'll make a couple of spacers for it out of aluminum tube in the next couple of days. Note in the first picture you see one long screw, and one slightly shorter screw... These came from removing pieces of the TPS. The longer screw goes in the top. To mount the TPS, I used aluminum sheetmetal screws.

I'm also likely to space out the TPS with a pair of small washers, as there is a small ridge between the plate and the sensor.

Wankel7

Wow, that is really clean!

darkslide750

I have an extra tps pigtail. A little late though.

NZ_87_TURBO

im about to do the same. Whats the bell crank? Ive got a couple of t2 Tbodys to modify so thats ok.

ducktape

The bellcrank is the arm your throttle cable connects to on the throttle body.

T2 vert

iTrader: (5)

Why don't you use the stock TPS? That is what I use and it has been working for a few years now with no problems.

ducktape

Did you just look at the pictures, and not read the first post at all? The answer is in the first sentence!

slo

iTrader: (1)

I would have sold you a stock TPS pigtail for 5$.

For parts like that contact JAP2LA

thetech

iTrader: (1)

Hate to pile it on but I also have a spare pigtail laying around Install looks clean though!

NZ_87_TURBO

the same goes for me, but the TB had no tps to start with but the guy who send it to me has included a mean looking bracket with it anyway so i dont need to fab one up.

BDC

Looks good. Does it work? Does it have any slop between 0% Fault, 0%, and 1% when off-throttle?

B

ducktape

Works great, there's no slop at all. Car has been to the dyno and the track, and it's been spot on every time.

C. Ludwig

iTrader: (27)

Think Duck made two or three posts asking for pigtails and no one replied. Turns out 1st gen DSMs use the same style TPS so that's at least one more source for pigtails.

BDC

I'm thinkin' sticky...

B

ducktape

Yep... https://www.rx7club.com/showthread.php?t=654618

Bumped it for a month, and no one had one for sale. It was holding up my build, so I improvised.