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Yamaha v star 650. With the tps sensor off the carb and not connected to anything. How many ohms should the tps sensor put out?

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  • Yamaha Master
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Hi Daniel the following information is courtesy of Road Star Clinic and written by Steve Graham

  • With the TPS cable disconnected from the bike's harness, you'll see that the wires from the TPS are Blue, Yellow, and Black. Using an Ohmmeter (the digital type is best), measure the resistance between the terminals for the Blue and Black wires. It should be between 4k ~ 6k Ohm at 68-degrees F. Temperature "IS" a factor, so you'll find it will vary some with different temps. Throttle position is NOT a factor in this measurement.
  • Measure the resistance between the Yellow and Black terminals, with the throttle closed. If it does not fall within the desired range, then by loosening the M4 screws holding the TPS to the bracket, you can rotate the TPS until it shows the correct reading on the Ohmmeter. With the right setting established, retighten the screws. So far, I've found that every TPS I've installed has needed a setting of 650 to 675-Ohm. If you measure the resistance between the Yellow and Black terminals while opening the throttle from idle to fully open, you should see a progressive change from the set point to a maximum between 4k ~ 6k-Ohm.
Not all digital ohmmeters are setup the same. Some have a multiplier on the LCD for each scale (X10, X100, X1K, and X10K), but yours may have range limits that just indicate the highest limit of each setting on the dial. With that type of ohmmeter, you'd use the 10-K or 20-K scale (whichever it comes with) while reading the blue & black wires (which just means that 10,000 or 20,000 Ohms is that scale's greatest resolution). The reading taken from the blue & black wires is the maximum resistance of the TPS and isn't effected by throttle position. When you measure the resistance between the blue and black wires you should get something in the neighborhood of 5,000 Ohms (give or take about 500). Multiply that number times the standard of .13 to .15 (I just use .14) and the result is the resistance to set the TPS position to while reading the yellow and black wires. With ohmmeters that have range limits, you'd use the 1K or 2K scale (whichever it has) to set it while connected to the yellow and black wires. The yellow and black wires show the variable resistance of the TPS depending on throttle position and what you're doing is setting the nominal resistances at idle.
Once it's set, if you open the throttle you'll see the resistance across those wires climb between 4,000 to 6,000 Ohms. When you drop the throttle back to idle, it should return to the previously set reading (plus or minus 25 Ohms). It'll vary some, so don't sweat it if it doesn't return to exactly what you set it to.
Good luck and have a nice day.

Btw, I’m available to help over the phone in case u need at https://www.6ya.com/expert/gregg_c0ec1df182c7330e

Posted on Aug 20, 2016

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6ya6ya

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Posted on Jan 02, 2017

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Anonymous

  • 2336 Answers

SOURCE: Exhaust

the best way to do this is buy the aftermarket exhaust and keep the baffles in the exhaust and run it for 50 or so mile then pull out one of the plugs and if its gray you are fine if its white or black you will have to rejet

Posted on Nov 10, 2008

Ken Mangione

  • 74 Answers

SOURCE: NOT SURE HOW TO SET UP THE TPS

you need to sync the carbs together.

Posted on Dec 21, 2008

Anonymous

  • 292 Answers

SOURCE: how to lower the idle on a 2002 yamaha 650 v-star classic?

under the left side of the gas tank you will see i black knob/screw at the end of what looks like a hose. the knob faces the rear of bike. that adjusts the idle. its real easy to find and the only adjustment you can make to the carbs.

Posted on Apr 02, 2009

rockitman187

Randy Hough

  • 2559 Answers

SOURCE: Yamaha v star 650 runs with choke on only

That is the problem,You need to clean the carb jets and get the gum out of the bowl.

Posted on May 22, 2009

Moto-Wiz

Moto-Wiz

  • 34 Answers

SOURCE: where is oil filter located on 650 v-star yamaha

The oil filter is on the right side
under a cover with 3 screws in it.
Remove the covers and replace the filter
and the o-ring on the cover.
Watch which way it goes in
when removing it.

Posted on Aug 21, 2009

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