hey guys can u tell me which TPS this is on my rb20.

[S13 240SX]

my rb20 is using this tps sensor.

and here are the colors on the sensors which are confussing me on how to wire it up..



i'm confussed cuz that has 3 wires and my rb20 has only 2 wires. 1 green and the other green/red.

let me know guys please and thank you.

[lilskyline240]

i believe the plug u are looking at isnt used unless ur an A/T. with the M/T the ecu only reads the throttle signal 0-5V given by the grey plug.

[S13 240SX]

so is that problem for me? cuz my rb20 is not A/T but it came with that gay plug.. and i'm not sure if my ecu is for a/t or m/t it has big code 23 on it.

[lilskyline240]

if u have a M/T you dont need to have that plug hooked up at all. Just go recalibrate the TPS and make sure u have the correct volts at closed and WOT. u might find out ur tps is shot, or not calibrated correctly

[S13 240SX]

but i am not sure if the ecu is m/t or a/t and i tired loosing the two screws on the tps while engine is runing to move the tps some to try to make a change and it makes no change.

[Coolwhip]

test the voltage that is read from the TPS when its at closed throttle and WOT as suggested above. As long as you have the right signal voltages you shouldn't see any problems.

[S13 240SX]

what should be the right signals?

[Coolwhip]

Closed throttle - approx 0.4 Volts Wide Open Throttle - 4 Volts

[S13 240SX]

Closed throttle - approx 0.4 Volts Wide Open Throttle - 4 Volts

cool which pins do i hook volt meter too??

and also once i'm in the right signals, so the other guy was saying i dont even need the connector plug plugged in?

[Big_E-Dog]

the top and the middle is for close throttle and the middle and the bottom is for WOT.

so basically TOP and MIDDLE 0.4

MIDDLE and BOTTOM 4.0

[Carl H]

there is SO much misinformation in this thread.the pigtail connector is the actual tps connection with the middle pin being signal and the outer being either power or ground depending on what side you look at the plug from.the plug on the tps body is the wot and idle switch, center pin is common to the two and wot and idle being in their respective open/closed positions.note that all nissan tpss' are different as they have a certian rotation to them for their reading, i dont remember which way the 20's tps is marked but make sure it corresponds to the throttle blade opening.

[S13 240SX]

ok my tps is reading .04 at closed and 7.9 at wot.. and now that i changed it the car wont start

whats wrong?

and guys i'm asking more about this plug not the pigtail connector

http://i272.photobucket.com/al...5.jpg how do i wire the idle switch if thats what it is?

[lilskyline240]

there is SO much misinformation in this thread.the pigtail connector is the actual tps connection with the middle pin being signal and the outer being either power or ground depending on what side you look at the plug from.the plug on the tps body is the wot and idle switch, center pin is common to the two and wot and idle being in their respective open/closed positions.note that all nissan tpss' are different as they have a certian rotation to them for their reading, i dont remember which way the 20's tps is marked but make sure it corresponds to the throttle blade opening.

i think this is confusing him. Hes tryin to figure out how to wire up the WOT/idle switch plug which isnt needed unless hes running the Auto Trans. At least this is the way its been on every single car ive seen with a TPS and M/T

[S13 240SX]

why is it not needed???

i seen m/t rb's and they have a idle switch plug on them and its a grey plug.

[Carl H]

rb20s will not idle correctly unless the idle switch is connected...they turn into complete dogs if you dont connect it.

[lilskyline240]

is this rb20 specific? because i dont have mine wired up on my rb25 s2 with greddy plenum and q45 throttle body

[Carl H]

yes, 20 and 26 only.

[lilskyline240]

how come the Rb20 and Rb26 are the only nissan motors ive ever seen that need both hooked up if ur running a M/T?

[Carl H]

just the way it goes man...the 20/26 arnt the only ones...quite a few others use this too.

[Oo_Skyline_oO]

rb20s will not idle correctly unless the idle switch is connected...they turn into complete dogs if you dont connect it.

Hi Carl, I did an RB20 swap, and when the engine came in I didn't even notice that the tps pad been completely smashed in and the cables to both connections on the tps were cut. Everyone says that I can use a Q45 or KA24de tps sensor, but I have abolutely no clue how to wire it , also it came an automatic so theres 6 wires that I have plugs for but don't know where they go. do you think you could help me out hiere??? it runs like complete

[Sil240]

S13 240sx- Did that TPS work for you???

Because I think my TPS is bad and I scouted out some TPS's that look like yours.It looks like a Z31 VG or a KA24E SOHC TPS.I'm goin to try them out tonight.I'll try to get some pics and part #'s up too.

Funny thing is that my harness connector only has 2 wires on the pigtail (Throttle Sensor).

I have no idea why though....