87 s-afc install...need some confirmation

[Todd]

Im doing the 1/2 NA-T conversion on my 87 and need a hand with my s-afc install.
I've prowled the forums here, as well as supraforums, and have had a very hard time coming up with anything.
I found the PLX 87-88 pinout diagram, and think i have tihs straightened out.
I know people have installed the s-afc on the 87, but i cant seem to find detailed information.
Here's what ive come up with (attached). I just need to know if this is completely correct.
Thanks a lot.

 

[Bishop92t]

Are you installing that on a turbo ecu or N/A ecu?

 

[SupraDerk]

He's going 1/2 NA-T and using a S-AFC, so I'm pretty sure it's an N/A ECU. I thought I had a full pinout of the ECU somewhere but I can't find it...

 

[Todd]

NA ecu.

 

[Todd]

i got it all hooked up, but im having an issue with the TPS readings.
i know that closed the TPS should be around 0-1 V, and wide open it should be around 5 V.
is there supposed to be an inbetween voltage?
i hooked it up to the one i have on there and it stayed at zero. i got out the multimeter, and the plug just to the right of the gray one varies from 0 V (closed) to 5 V (WOT).
i hooked the s-afc throttle wire up to that one the right instead...now it either reads 0% (no throttle) or 5 V (any throttle), making me s-afc display either 0 or 100%, notihng in between.

so, is there anything in between the 0 and 5? this is all with the key ON, but the engine not running.
im thinking it may make a difference when the engine is started (cant try that now; oil pan is off).

thanks for any input!

 

[Bishop92t]

Sounds like you're tapped onto the wrong wire for TPS. Unfortunately I don't have an N/A 86.5-88 diagram to double check.

(I'm assuming you've checked your engine error codes and you have none)

 

[Todd]

i checked all the wires at the TPS with a multimeter.
3 of them dont change with throttle position....one wire reads either ~0 or ~5Volts, which is the one i tapped into.
i also tried another tps and it does the same thing.

i cant seem to track down the diagram either, so if someone has that i would REALLY appreciate it. i used what i came up with by forum prowling, so im not sure how correct it is.

any other ideas? thanks.