Join Date: Dec 2004
Location: Altofts zx-12r B4 UK
Good to hear it was an easy fix.
Here are a couple of guides on how to set the TPS, I've not used either as I have an adaptor cable.
Setting the TPS
#25 Tamper Proof Torx bit (with center hole) needed.
There are 2 ways to adjust the TPS.
The first way is dynamically with the bike running.
Adjusting the TPS this way you don't need a digital voltmeter.
Each bike is slightly different and this may be a way to adjust for those differences without relying on a set voltage or movement amount.
1- Warm-up bike until the fan is starting to cycle, engine hot.
2- Loosen TPS adjustment screws.
3- Raise idle to 2000 rpm with the idle adjustment screw.
4- Move TPS until the highest idle speed above 2000 rpm is achieved.
5-Tighten down screws and readjust idle to 1000 rpm.
The second way is using a digital voltmeter. With a plug in adaptor, or
1)Take two 2" pieces of a strong THIN wire(I use .020 stainless safety wire) and back probe the terminals on the TPS connector. Slide the thin probe wire between the rubber seal and the TPS wire. This will not damage the wires or connectors at all. Go across the Yellow/White and Brown/Black wires with a DIGITAL volt ohm meter, set to DC volts.
2)Turn the ignition on and tap the TPS with your finger CCW till it gets to the desired reading of 1.16 Vdc. Don't ever use an analog voltmeter when dealing with any computerized cars bikes whatever. (analog meters are the ones with a sweeping needle indicator)
You can always return the TPS to the stock 1.084vdc - 1.086vdc setting if the change is not an improvement in drivability.
For Tech Questions Bike Model letters and Country are more useful than saying the year, for UK owners anyway, as registration year is not always the year of manufacturer model.
Last edited by ninjayorkie; 08-11-2019 at 05:47 AM.