[nick57]

V-Star 1100 Wiki Knowledge Base - TPS

Throttle Position Sensor The TPS reads the position of the throttle, and causes changes in timing. Some info is available in the Yamaha Shop Manual, but is sketchy and falls short of the excellent info available via the Clymer's manual - which is a good investment if you plan on working on your

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[nick57]

V-Star 1100 Wiki Knowledge Base - Charging System

Rectifier—Regulator: A headlight dimming or speedometer fluctuation problem is usually an indication of your voltage regulator gone bad. You can check this yourself if you have a multimeter at home. Check the voltage anywhere you have unswitched line volts (battery). If your voltage is over

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[nick57]

click on where it says how to test and adjust the TPS.... If the engine is loping the idle is to low. its a balanced motor. if the tps readings are a little off you can change slightly by turning the idle knob.

 

[nick57]

you don't know what the previous owner did. check the valve adjustment..... it's easy to get the carb sinc out, go thru the carbs what jets are in it how many turns on the pms screws....how does the wiring look all over unmolested?

 

[nick57]

tps changes the timing it probably doesnt effect the racing idle.a lot of people talked about racing rpms not making any sense, but never a solution.. maybe carb sinc has something to do with it. idk.

 

[nick57]

what could cause the rpms to increase. the only electrical device attached to the carbs are the carb heaters and the tps, the tps has no way of turning the throttle shaft... maybe the throttle cable is hanging up. or a vacumn leak.