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Prius accelerator pedal - Scion alternative?

Discussion in 'Generation 1 Prius Discussion' started by bwilson4web, Jan 29, 2010.

  1. bwilson4web

    bwilson4web BMW i3 and Model 3

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    I went looking for a CTS accelerator assembly to understand what they are doing only to discover:
    [​IMG]

    I'm less interested in the base as much as the resistance assembly:
    [​IMG]

    I'll check the connector and resistance range but this may turn out to be an affordable, replacement. Get a salvage Scion accelerator and transplant the encoder.

    I paid $28 for the Scion assembly on Ebay and will soon find out if it works.

    Bob Wilson
     
    #1 bwilson4web, Jan 29, 2010
  2. patsparks

    patsparks An Aussie perspective

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    Hey Bob, can you do us a favor please.
    Can you take a picture of the pedal where it joins the arm on the reostat while at rest then a second photo from the same angle at full throttle? A third picture at half travel would also be good.

    I think I can see an issue just looking at what you posted.

    Thanks mate
     
    #2 patsparks, Jan 29, 2010
  3. bwilson4web

    bwilson4web BMW i3 and Model 3

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    Better still, I can give a list of links to my accelerator photos:

    http://hiwaay.net/~bzwilson/prius/pri_acc_010.jpg
    http://hiwaay.net/~bzwilson/prius/pri_acc_020.jpg
    http://hiwaay.net/~bzwilson/prius/pri_acc_030.jpg
    http://hiwaay.net/~bzwilson/prius/pri_acc_040.jpg
    http://hiwaay.net/~bzwilson/prius/pri_acc_100.jpg
    http://hiwaay.net/~bzwilson/prius/pri_acc_110.jpg
    http://hiwaay.net/~bzwilson/prius/pri_acc_120.jpg
    http://hiwaay.net/~bzwilson/prius/pri_acc_130.jpg
    http://hiwaay.net/~bzwilson/prius/pri_acc_200.jpg
    http://hiwaay.net/~bzwilson/prius/pri_acc_210.jpg
    http://hiwaay.net/~bzwilson/prius/pri_acc_220.jpg
    http://hiwaay.net/~bzwilson/prius/pri_acc_230.jpg
    http://hiwaay.net/~bzwilson/prius/pri_acc_240.jpg
    http://hiwaay.net/~bzwilson/prius/pri_acc_250.jpg
    http://hiwaay.net/~bzwilson/prius/pri_acc_260.jpg
    http://hiwaay.net/~bzwilson/prius/pri_acc_300.jpg
    http://hiwaay.net/~bzwilson/prius/pri_acc_310.jpg
    http://hiwaay.net/~bzwilson/prius/pri_acc_320.jpg
    http://hiwaay.net/~bzwilson/prius/pri_acc_330.jpg
    http://hiwaay.net/~bzwilson/prius/pri_acc_340.jpg
    http://hiwaay.net/~bzwilson/prius/pri_acc_350.jpg
    http://hiwaay.net/~bzwilson/prius/pri_acc_370.jpg
    http://hiwaay.net/~bzwilson/prius/pri_acc_380.jpg
    http://hiwaay.net/~bzwilson/prius/pri_acc_390.jpg
    http://hiwaay.net/~bzwilson/prius/pri_acc_395.jpg
    http://hiwaay.net/~bzwilson/prius/pri_acc_398.jpg
    http://hiwaay.net/~bzwilson/prius/pri_acc_500.jpg
    http://hiwaay.net/~bzwilson/prius/pri_acc_600.jpg
    http://hiwaay.net/~bzwilson/prius/pri_acc_610.jpg
    http://hiwaay.net/~bzwilson/prius/pri_acc_620.jpg
    http://hiwaay.net/~bzwilson/prius/pri_acc_630.jpg
    http://hiwaay.net/~bzwilson/prius/pri_acc_640.jpg
    http://hiwaay.net/~bzwilson/prius/pri_acc_700.jpg
    http://hiwaay.net/~bzwilson/prius/pri_acc_710.jpg

    Some links may be 'dead' as I may not have uploaded the photos.

    Bob Wilson
     
    #3 bwilson4web, Jan 29, 2010
  4. patsparks

    patsparks An Aussie perspective

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    No, I can't see what I thought I might. Oh well.
     
    #4 patsparks, Jan 29, 2010
  5. mlibanio

    mlibanio Member

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    Bob, I have to say you are a bloody genius! Wow! Even if this does not work out, perhaps there is a way to make it work. You being an engineer by trade, I am quite confident you will find a way. I will be watching this with greater eagerness. Thank you so much for posting this, as I have a feeling that my Prius pedal my be in need of replacement soon!
     
    #5 mlibanio, Jan 29, 2010
  6. Politburo

    Politburo Active Member

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    Just to be clear, this discussion is about a replacement pedal for the Gen I Prius, yes?
     
    #6 Politburo, Jan 29, 2010
  7. bwilson4web

    bwilson4web BMW i3 and Model 3

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    Correct.

    Doug Schafer, one the pioneers, fault-isolated the problem to 'dirty wipers' in the encoder. He developed a cleaning procedure and when he went overseas, I picked up his business, refurbishing accelerators. ... egg money.

    I've long suspected the problem came mostly from the 2001-02 years and there was probably a fix applied to the production units. Since the Scion encoder looks similar (we don't know about the connector, yet) this might be a clean way to get a more modern encoder in the accelerator without having to pay $500 (Toyota list price) or my egg money.

    Bob Wilson
     
    #7 bwilson4web, Jan 29, 2010
  8. tochatihu

    tochatihu Senior Member

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    Dang Bob, that Scion thingee looks mighty familiar - why didn't we think of this before?

    How many Toyota vehicles are throttle by wire? and is it purely a subset of those that are now under recall? I think we may know much more about non-rug accel problems soon. How odd if potentiometer cleaning leads in some way to that knowledge.

    BTW chicken eggs are about 7 cents US equivalent here, what are yall in industrialized nations paying?
     
    #8 tochatihu, Jan 29, 2010
  9. bwilson4web

    bwilson4web BMW i3 and Model 3

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    At the time, we had a 2001 Echo and it had a manual throttle cable. The Scion popped up when I was trying to find one of the CTC style accelerators on Ebay and serendipity.

    We still need to check the connector but gosh is sure looks familar.

    Bob Wilson
     
    #9 bwilson4web, Jan 29, 2010
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