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  1. #1

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    Substitute automotive TPS #EC1098 or #TH69 TPS for Polaris 2410183 non-pigtal TPS

    Has anyone tried the TH69 ($?) or the EC1098 ($39) tps from an auto parts store to see if they will work in place of the #2410183 Polaris TPS? I just bought the EC1098 yesterday and going to try and hook it up to one of my 2001 Genesis this afternoon. The first three pics are the TH69 and the last three are of the EC1098 compared to the 2410183 Polaris TPS.
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  2. #2
    casey67's Avatar
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    Looks like you are onto something.
    The EC1098 looks to be from a 86-87 Buick Grand National,3.8L Turbo.

    And the TH69 is from 90-92 Firebird 5.0L & 5.7L , I'm assuming Tuned Port Injection.
    Attachment 238539
    Firebird
    Attachment 238540

    Looks like the wiring should match up, possibly upside down. They are both for a 5v reference signal like the Polaris.

    You should be able to see the A B C terminals marked on the sensors.

  3. #3
    Let us know what you find. I have two virages sitting in my driveway that I have never ridden...both need a new tps....and from the sound of it, polaris has been a couple weeks from releasing the new ones for the past several months.


    I do remember looking in ebay and seeing similar sensors for other makes of skis and wondering if one of them could be fitted.

    I'm also considering swapping the intake manifold from my "spare" genesis so I can use the non-pigtail type.

  4. #4
    Click avatar for tech links/info, donation request K447's Avatar
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    The TPS you are showing does indeed look very similar to the stock Polaris TPS.

    One thing to check is whether the resistance change over the sweep range is the same for the official Polaris part and this alternate.

    If it works, it would be yet another alternative to this;
    Apparently an alternate source for the non-pigtail Polaris TPS (1999-2001 engines) is the Johnson / Evinrude / BRP Ficht outboard TPS part numbers 439827, 0439827 and 5001793


  5. #5

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    Ok, I installed the EC1098 TPS from Advance Auto Parts straight out of the box with no mods and all seems to be working fine. I installed with the bolts in the center of the slots and tightened to 5ft/lbs. I will take it out as soon as I can and let you know how it performs. I have a video of it running after I installed the TPS but it said the file is to large to upload??
    1st pic is stock unit
    2nd pic is verifying EC1098 plugs up
    3rd pic is EC1098 being mounted
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  6. #6
    Click avatar for tech links/info, donation request K447's Avatar
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    Quote Originally Posted by hh42 View Post
    Has anyone tried the TH69 ($?) or the EC1098 ($39) TPS from an auto parts store ...
    Why did you choose the EC1098 over the TH69?

    Looks like the TH69 would be a direct fit with round mounting holes, compared to the elongated mounting slots on the EC1098.

    Before you go riding, measure the voltage coming out of the center TPS pin with the TPS fully plugged into the harness.. At idle position it should be about 0.370 volts (going from memory here ).

    You can use the EMM Service Power jumper to power up the EMM without starting the engine.

    Also check the TPS output voltage with the throttle pegged wide open.

    BTW, you do have the round plastic nub in place on the TPS arm - correct?

  7. #7

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    Video of 2001 Polaris Genesis running after installation of EC1098 TPS

    Here is the video of it running for a second to show it works. (Wow! I look rough in that video!) Anyway, hope this helps some people looking for a alternative to the high priced hard to find Polaris #2410183.




  8. #8

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    K447,
    The EC1098 was in stock for $39 and they would have to ship the TH69 from another store. I think it was around $70. I didn't install the plastic nub to test it because it's going on the other ski as soon as I get the EMM back from DFI. What purpose does the nub serve? I will try and check the voltage tomorrow. I will have to go back and read up on how to do the EMM Service Power jumper. Thanks for the info.

  9. #9
    Click avatar for tech links/info, donation request K447's Avatar
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    The plastic nib on the TPS arm serves as a friction reducer.

    But more importantly that nub is a spacer. Without the nub acting as a spacer the TPS arm angle will be out of spec relative to the throttle shaft and the TPS output voltage will be incorrect. Incorrect TPS voltage to the EMM means the fuel injection will run leaner than specification. Possible piston damage from lean combustion.

    It is critical that any replacement TPS have the same size nub as the OEM Polaris TPS uses. The plastic piece is removable from the old TPS if you are careful.

  10. #10

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    Ok, thanks for the info. I will try and install the nub from the old TPS then check the voltage @ idle & wot.

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