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Thread: Throttle position only goes to 85% on FM?!

  1. 13th April 2012, 12:38 PM #1
    glenhendry's Avatar
    glenhendry
    glenhendry is offline Master Supporter
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    Throttle position only goes to 85% on FM?!

    Last night I noticed that when I am watching the Faultmate real time values and I push the accelerator all the way to the floor, it only reads 85%. Does that mean my TPS is broken/worn? Or maybe just malaligned? Can anyone confirm that their FM is showing 100% for that setting.
    Now: 2005 L322 Vogue 4.4 M62TU (Black)
    Before: 2000 P38A HSE 4.6 - stately capability | 2008 Kluger KX-S | 2004 Forester | 2000 Yamaha XJR1300 | 1993 VR Calais | 1974 HQ Statesman - 308 V8 | HT | HK
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  2. 13th April 2012, 12:41 PM #2
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    Scouse
    Scouse is offline OldBushie Gold Subscriber
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    Throttle cable slack? Maybe try from the engine bay end of the cable.
    Scott
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  3. 13th April 2012, 08:17 PM #3
    Rupert Prior
    Rupert Prior is offline Master
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    it depends on which injection system you have, 85% is ok some read slighly less than that.
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  4. 13th April 2012, 08:20 PM #4
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    glenhendry
    glenhendry is offline Master Supporter
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    Its a Thor Bosch system. Ill check the cable slackness in the morning.
    Now: 2005 L322 Vogue 4.4 M62TU (Black)
    Before: 2000 P38A HSE 4.6 - stately capability | 2008 Kluger KX-S | 2004 Forester | 2000 Yamaha XJR1300 | 1993 VR Calais | 1974 HQ Statesman - 308 V8 | HT | HK
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  5. 14th April 2012, 07:10 AM #5
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    glenhendry
    glenhendry is offline Master Supporter
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    Adjust your throttle cable!

    OBDII scanner agreed with FM, only 85% throttle.

    With the throttle pedal down all the way, I could move the butterfly manually at the throttle body all the way to 95% (as read by the OBDII scanner). So I adjusted the throttle cable and got it to 93%, which is better than 85%.

    I guess all our throttle cables are likely to be getting stretched slowly over time and since they are all getting over a decade old its worth adjusting the throttle cable.
    Now: 2005 L322 Vogue 4.4 M62TU (Black)
    Before: 2000 P38A HSE 4.6 - stately capability | 2008 Kluger KX-S | 2004 Forester | 2000 Yamaha XJR1300 | 1993 VR Calais | 1974 HQ Statesman - 308 V8 | HT | HK
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