 | Home > Technical (L322) > Accelerator pedal / throttle position issues |
 
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| TheAllSeeingPie Member Since: 18 Apr 2012 Location: Leeds Posts: 848   
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So I was logging some data with Rev and noticed that my trottle position only ever goes to 78% and that the pedal reads 14% without any pressure and 89% with kickdown. Can anyone with an IIDTool check their values please? I've had a new pedal from Dan but that's not solved it at all. Is there something I can reset to make it read correctly? |
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26th Jun 2013 6:13pm |
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| Katash Member Since: 10 Apr 2011 Location: Hereford Posts: 700  
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Going to check now gimme 5 mins |
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26th Jun 2013 6:45pm |
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| TheAllSeeingPie Member Since: 18 Apr 2012 Location: Leeds Posts: 848
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That's great! Could I trouble you to check throttle position as well please? Shoud be further along in the PCM engine values |
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26th Jun 2013 6:58pm |
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| Katash Member Since: 10 Apr 2011 Location: Hereford Posts: 700
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78.420% at kickdown |
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26th Jun 2013 7:20pm |
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| TheAllSeeingPie Member Since: 18 Apr 2012 Location: Leeds Posts: 848
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Hmm that's what I get. I guess that's normal, or we both have knackered throttles. |
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26th Jun 2013 7:26pm |
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| Katash Member Since: 10 Apr 2011 Location: Hereford Posts: 700
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What is your issue? |
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26th Jun 2013 7:34pm |
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| TheAllSeeingPie Member Since: 18 Apr 2012 Location: Leeds Posts: 848
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Just the fact it doesn't say it opens 100% sets off my OCD! |
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26th Jun 2013 8:10pm |
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| GraemeC Member Since: 01 Jul 2012 Location: Chester Posts: 836
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Not sure if this could happen on a RR but on a previous car it was common for the throttle not to open 100% due to the cable from the pedal to the throttle position sensor stretching.... 2007 Zermatt Silver TDV8 Vogue SE - now sold but was a great car! |
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26th Jun 2013 8:18pm |
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| Katash Member Since: 10 Apr 2011 Location: Hereford Posts: 700
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Pretty sure the throttle is fly by wire and is connected to a potentiometer |
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26th Jun 2013 8:19pm |
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| TheAllSeeingPie Member Since: 18 Apr 2012 Location: Leeds Posts: 848
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It's all fly by wire for the L322. I'm just hoping it's the OBD reading degrees open as % or something. Seems odd that the throttle body wouldn't open more than 78% or the throttle itself 90%. Unless it's a 5v scale and the actual max is not 5v or something daft ... |
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26th Jun 2013 8:37pm |
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| Katash Member Since: 10 Apr 2011 Location: Hereford Posts: 700
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Or maybe the throttle body servo can physically drive past 100% and its just calibrated that way, I wouldn't worry about it. |
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26th Jun 2013 8:40pm |
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