How-to: Clean Throttle Position Sensor

**Ironman** · 06-03-2009, 12:36 AM

Well I tried to take my TPS off today and I couldnt. The bolts were just too hard to reach. I would literally have to drop the engine to access the phillips head and torx bolts for both of my TPS'.

Oh well.

**cbcm2008** · 06-06-2009, 02:13 PM

I'd mark mine with a dab of paint so I know where dead-center is before removal.

Makes adjustments easier. Checking that the TPS is registering as fully closed is the most important to prvent off-idle issues.

**kouks** · 07-21-2009, 07:27 PM

I cleaned the TPS last night. Not the easiest job I've ever done I must admit. Very limited access to the TPS and its securing Torx bolts resulted in my losing one of the bolts in the abyss of the engine somewhere. Looked for it for about 20mins and couldn't see it anywhere. Ended up using one of the cowling bolts to hold in the TPS luckily they were the same size

Took it for a quick spin afterwards and the idle seems much much better, thanks for the instructions.

My initial DIAG readings were MIN 17 MAX 96. When I put it all back the best I could get was 17-95 I don't suppose this should be too much of a problem being out by 1 right??

PS This was my first bike DIY after working on cars for over 20 years and it's definitely harder to work on bikes everything is just so cramped in there

**Tezmac** · 08-11-2009, 07:04 PM

Nice writeup. Took me about 10 minutes to do this. Literally took me longer to pull off the plastics than it did to pull the TPS apart, clean it, and get it aligned back up correctly.

**moonrider** · 05-07-2010, 10:13 AM

Guys can anyone please post some pictures of this..... im having a difficult time here....

**moonrider** · 05-07-2010, 10:22 AM

Originally Posted by socaldev

1) Before you take anything apart, use the diagnostic mode and view your TPS settings. This will be the first (01 value) screen you see in diag mode. The TPS value should go up as you twist the throttle. Twist the throttle completely and write down the max value, then let go and write down the min value. You will need these later.

*To enter diag mode you need to: First, unplug the two electrical connections to your fuel filter on the underside of your tank. Then, press and hold the two buttons on your display. As you are holding the two buttons, turn the key to the "ON" position and continue holding for 7 secs. Release, then press and hold once again until the screen displays "DIAG".

I cant find the two electrical connections to my fuel filter..... actually cant find my fuel filter (dont know how it looks like)

Originally Posted by socaldev

2) Dismantle your TPS, it is located on the throttle side, under the small matte black cover near where your knee is when riding the bike. You'll need the security Torx bit for the TPS screws. (Note: If you don't want to buy the security torx. you can try to just grip the screw heads with channellocks and then replace them with regular allen head bolts to make the task easier when you have to do it again later.)

Ive opened the small matte black cover and saw lots of stuff but dont know how the TPS looks like :-( pictures please