Author Topic: Testing Throttle Valve-How to? (Read 3289 times)

gshok108 · « **on:** June 17, 2005, 05:58:15 PM »

Does anyone have the procedure for testing the t-valve on a 02 b12? My repair manual will not be here for a few days.

Red01 · « **Reply #1 on:** June 18, 2005, 06:16:27 AM »

Do you mean the TPS (throttle position sensor) - or something else?

Here's a link for checking/adjusting the TPS:

http://www.bladesbandit.com/tps.htm

gshok108 · « **Reply #2 on:** June 18, 2005, 01:03:51 PM »

That's it. Thanks,

Here are my values:

Resistance between (2) outside prongs= 5.12
Resistance between middle and top prong= .93
Resistance between middle and top prong with throttle fully engaged= 4.02

I am assuming all is good?

Red01 · « **Reply #3 on:** June 19, 2005, 01:08:59 AM »

At full throttle, resistance between the top and middle pronges (ohm2 in the service manual) shoud be between 2.66-4.64 Kilo-ohms. Resistance between the top and bottom prong (ohm1) should be greater than this value. The correct TPS position is to have the ohm2 resistance at 76% of the resistance of ohm1.

On your bike, ohm1 is 5.12 and ohm2 is 4.02.
You're close (~78.5% instead of 76%), but not spot on.
You should adjust your TPS so that ohm2 reads 3.89.

I don't know that it'll make much difference. Some folks have unplugged the TPS and not noticed a change...