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-   -   Adjusting TPS Made Easy (Video) (http://www.slednutz.com/showthread.php?t=4012)

PolarisRich 12-11-2009 11:05 PM

Adjusting TPS Made Easy (Video)
 
TPS (Throttle Position Sensor)


Some Polaris snowmobiles are manufactured with Throttle Position Sensors (TPS). The TPS comes set from the factory and should not need adjustment. However, upon removal of the TPS, you must mark the TPS position on the carburetor and replace it in the exact same position as removal. Polaris has developed a TPS test kit for aid in setting the Throttle Position Sensor to specification and cost around $145.
So heres what i did...
I went to my local Radio Shack and bought a 5vdc regulator, some aligator clips, some 9v battery clips(+)(-) wires and some new 9v batt. I then assembled and soldered all the parts together so the batt ran through a lighted switch, then to the 5 vdc regulator, thus putting out 5v to the (+) aligator clip. All together everything cost me $15

TPS Testing

1. Make sure your 9 volt battery is in good condition
by inserting the black volt meter probe from your
Fluket meter in the black terminal and the red
probe into the pink terminal. Voltage should read
4.99 to 5.01 volts. If not, try a new 9 volt battery.

2. Remove the connector from the TPS.
(Red, Black, Pink)

3. Install aligator clips on TPS.

4. Insert red voltmeter lead into yellow terminal, and
black lead to black terminal. Slowly open throttle
and check for smooth voltage change.
NOTE: The fluke meter will change scales and show
O.L. mometarily when throttle is opening.

5. Voltage at yellow terminal should be 4.0 volts at
Wide Open Throttle for domestic engines, If not,
the TPS must be adjusted.

6. Loosen the two screws that hold the TPS on the
carburetors using a Torxt T25 bit with tamper
resistant hole in bit.

7. Turn the TPS clockwise to decrease voltage, or
counterclockwise to increase voltage.

8. When the TPS is set to the desired voltage, tighten
the holding screws and verify voltage is 4.0 volts at Wide Open Throttle for Polaris domestic
engines.

9. When the TPS is set and voltage is verified,
remove the tester and re-install the snowmobile TPS harness.

http://www.youtube.com/watch?v=aEPx7OsywNk

jasonsmith092 05-17-2010 05:17 AM

So heres what i did...
I went to my local Radio Shack and bought a 5vdc regulator, some aligator clips, some 9v battery clips(+)(-) wires and some new 9v batt

PolarisRich 05-17-2010 07:38 AM

So how did it turn out?

TheKuskokid 08-27-2010 11:33 AM

That is a very excellent flick on setting the TPS.

I am ordering the goods right now to make my own TPS box.

Thanks for that.

MrSnowman 08-27-2010 12:46 PM

now that's an awesome how-to

Gotmud 08-27-2010 12:54 PM

Holy shit your skinny Rich lol.

SnowAttitude 08-27-2010 06:41 PM

Rich your the Best...
You always make video's that are easy to understand.

What would be nice if you could find a scrap harness to plug in there, and then just clip onto the wire.... just a thought.

PolarisRich 08-28-2010 07:34 AM

Thanks Guys!
Let me know if anyone needs a hand.
TheKuskokid did you see the other post with all the parts and there numbers from Radio Shack and The Source stores?


P.S. James.... Your the best!!!!!!

TheKuskokid 08-28-2010 03:05 PM

Yup, sure did. Printed them off and ordered the parts up. The costs have increased since you posted them. Instead of it being $15 plus changes, it is $23 now.

Looking forward to getting this tool made up.

PolarisRich 09-25-2010 09:45 AM

So how's going?

PolarisRich 02-23-2011 08:17 AM

SETTING TPS ON CLEANFIRE INJECTION

1. Assemble your TPS sensor tool (PN 2201519) as per the instructions that came with the tool.

2. Make sure your 9 volt battery is in good condition by inserting the black voltmeter probe from your Fluketmeter in the black terminal and the red probe into the pink terminal. Voltage should read 4.99 to 5.01 volts. If not, try a new 9 volt battery.

3. Insert the red voltmeter lead into the terminal above the pink wire, and the black meter lead to the terminal above the black wire. Slowly open throttle and check for smooth voltage change.

NOTE: The Fluke meter will change scales and show O.L. momentarily when throttle is opening.

4. Remove the throttle cable in order to take the slack out of the cable.

5. Remove the connector from the TPS on the throttle body and install TPS sensor tool on to the TPS.

6. Measure and record the voltage reading at idle. Should be close to .930 volts.

7. Back off the idle lock nut counterclockwise and then back out the idle adjuster counter clockwise until the screw tip separates from the adjusted lever tab.

8. Loosen screws on the TPS sensor.

9. Adjust the TPS sensor until the voltage on the volt meter reads .709 to.711 volts.

10. Tighten the TPS retaining screws, making sure that the voltage continues to read .709 -- .711 volts.

11. Turn the idle set screw clockwise until the voltage reads .930 volts.

12. Voltage at the yellow terminal should be .920 -- .940 volts at idle. Once the TPS voltage is verified and set, remove the sensor tool and re--install the TPS harness.

660jeffr 02-14-2013 05:38 PM

Input Voltage
 
So I read on one of these forums that you can use an old cell phone charger for your power source rather than buying and building the Radio Shack one. I just happened to have an old charger so I checked the output voltage and it was 5.17 volts. I thought that was probably not accurate enough so since I had already purchased the stuff from Radio Shack I proceeded to hook the 9 volt battery to the 5 volt regulator and when I tested the output from it I got 5.11 volts. So my question is, how accurate does the input voltage have to be?

Powersledder 02-14-2013 09:12 PM

Your input voltage is going to affect your output voltage because the TPS sensor is basically just a resistor. The more accurate the better, but there's still a pretty wide tolerance on the exact setting.

660jeffr 02-17-2013 07:41 PM

Ok thanks, I'll give it a try

Rubi 02-17-2013 08:50 PM

I did some TPS testing a couple years ago. I didn't make one, but there was one floating around town that someone on the forums made. I think that one read 4.97 or 4.98 on my multimeter. Each meter reads a little different, and testers have some variation too, so I think you'll be fine. The percentage it is off is very small.


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