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11-02-2010, 04:30 PM | #1 |
Drives: 2010 yaris 3dr manual Join Date: Nov 2009
Location: Illinois
Posts: 8
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GAS PEDAL SPRING TOO WEAK
I have a 2010 liftback manual transmission. It's hard to not race the engine when starting off in 1st gear, and also whenever shifting to another gear engine races for a split second when clutch pedal is pushed. It is my belief that both issues are caused by a gas pedal return spring that is not stiff enough to offer you enough resistance when starting off in 1st gear so it's either stall it or race it a little, and when putting in the clutch and taking my foot off the gas pedal to shift to another gear it's not stiff enough to push the gas pedal out quickly so when disengaged from the drag of the transmission & engine I get the split second of racing a freewheeling engine. Anyone else think this is so? I've owned nothing but manual trans cars since 1972, and it's not just my yaris mt, I test drove 3 other 2010 yaris mt's and all were the same.
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11-02-2010, 05:46 PM | #2 |
Drives: '09 Yaris carmine red 2d HB Join Date: Jun 2009
Location: Middletown, NY
Posts: 1,502
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That may be. One of my very few gripes about my Yaris is that there is not enough physical resistance to the gas pedal so, it's sometimes hard to get my foot comfortable when crusing on the highway.
However, I do not have the shifting problem you described with my manual. |
11-02-2010, 05:49 PM | #3 | |
Start another Oil Thread!
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that's the ECU sir. live with it.
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11-02-2010, 06:53 PM | #4 |
Drives: 2017 Yaris IA, Pulse Red, Auto Join Date: Jun 2010
Location: Indianapolis
Posts: 538
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Yes, all the manuals do it. I thought it was due to the drive-by-wire technology. I'm "used" to it now.
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11-02-2010, 07:03 PM | #5 |
Machinist
Drives: Yaris sedan 2010 Join Date: Sep 2010
Location: Sts-Anges, Quebec, canada
Posts: 198
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Is there a way to stiff the gas pedal anyways?
The steering wheel is my desagreement too. It is soooo loosy. |
11-02-2010, 07:23 PM | #6 |
Drives: 2008 HB, A/T, Power W/L/M Join Date: Oct 2008
Location: LI, New Yawk
Posts: 2,063
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Shoulda bought the auto then
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Never take eyes off opponent - Bruce Lee |
11-02-2010, 07:38 PM | #7 |
Machinist
Drives: Yaris sedan 2010 Join Date: Sep 2010
Location: Sts-Anges, Quebec, canada
Posts: 198
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Auto it pretty much straight up on acceleration in 1st gear too..
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11-02-2010, 10:11 PM | #8 |
Drives: '09 Yaris carmine red 2d HB Join Date: Jun 2009
Location: Middletown, NY
Posts: 1,502
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I never even had a hint of the described "enging racing" problem when shifting (or any other time) with my "09 manual.
From what I can gather, that only happens with a relatively few vehicles with both manuals and automatics. So, perhaps it is a bad gas pedal or ECU? Personally, I would have the dealer change the pedal /ECU etc and have it eliminated as most do not have the problem and this points to a defect. If I got no satisfaction from the dealer I would personally write Toyota coporate. Remeber the squeaky wheel get ther grease or this case, their gas pedal fixed. Let's not forget, Toyota has a bit of a history wth defective gas pedals. |
11-02-2010, 11:09 PM | #9 |
Machinist
Drives: Yaris sedan 2010 Join Date: Sep 2010
Location: Sts-Anges, Quebec, canada
Posts: 198
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Do they charge for resetting ECU?
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11-03-2010, 06:35 AM | #10 | ||
Start another Oil Thread!
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Quote:
it's an ecu thing, and you've all forgotten how racey the engine was when you first started driving the car. rev hang is one of the huge drawbacks to any DBW car, and a reflash is usually the solution to this problem. the OP simply needs to learn how to control his softer-than-normal spring in his dbw throttle and go on living life. i hop from my MR2 into a yaris and immediately think "wow this pedal is too light" but after a couple minutes, i'm used to it. there's not much difference between 1/4 throttle and full throttle anyway ;)
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11-03-2010, 09:08 AM | #11 |
resident senior
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I like the rev hang . It allows me to match revs in a very smooth fashion . People who have ridden with me are amazed that they cant feel the gear changes .
To me the Yaris is perfect in almost every aspect with the exception of acceleration . 0-60 in the 6 second range would be ideal .
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11-03-2010, 09:15 AM | #12 | |
Drives: no-longer-boosted '10 Yaris Join Date: Nov 2009
Location: Angus, Ontario
Posts: 1,891
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Quote:
i am completly against jsut "living" with an issue but this is more like adapting to new technology, not a flaw at all
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If it has boobs or wheels sooner or later your gonna have problems with it |
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11-03-2010, 10:57 AM | #13 |
Drives: 2017 Yaris IA, Pulse Red, Auto Join Date: Jun 2010
Location: Indianapolis
Posts: 538
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It doesn't really RACE between gears, it's just that when you let your foot up off the accelerator for a second to change gears, the tach doesn't drop down as in other cars, it stays the same RPM.
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11-03-2010, 11:06 AM | #14 |
Drives: '09 Yaris carmine red 2d HB Join Date: Jun 2009
Location: Middletown, NY
Posts: 1,502
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People, you miss my point. Mine does no have any lag at least to any perceptable degree and it never had any.
I have been driving manual fo 50 years and I will admitt the the Yaris clutch is not the best. However, the engine will throttle down "normally" when the pedal is released. A DBW sys does not mean an engine can not be controled as well as with a traditional DBC sys. Throttle lag is not a charateristic of a properly working DBW sys. The technology used has been around for a long time (in industry,etc) and it can be completly linear if it is designed and working properly. Having said that, if somone had throttle lag with a DBC sys you would certainly tell them they have a throttle problem with the cable,etc. However, with a DBW sys you tell them the driver is a problem? I don't buy that. Throttle lag when the pedal is released is a safety problem so, it should be addressed. Like I said, if it was me, I would write Toyota coporate customer service and outline the problem if the dealer will not adress it. BTW, let's be carefull that we are not confusing throttle lag with a weak pedal spring with less than desireable resistance. And...... yes, Toyota did have some defective gas pedals supplied by a certain vendor. They have admitted to this and it is a matter of public record. Why do some still dispute it? Last edited by RedRide; 11-03-2010 at 11:31 AM. |
11-03-2010, 01:24 PM | #15 |
Drives: 3-door hatch Join Date: Oct 2010
Location: Los Angeles
Posts: 519
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I agre with the OP; I have a 2011 and after 400 miles I am finally (somewhat) getting used to the light gas pedal. I've been thinking about the possibility of adding another spring though.
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11-03-2010, 02:02 PM | #16 |
toyota
Drives: 2007 Yaris RS Blazed Join Date: Oct 2006
Location: toronto, canada
Posts: 3,637
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im curious if toyota canada will reset ecu for free??
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11-03-2010, 02:11 PM | #17 |
Modded Moderator
Drives: 07 Toyota Yaris, 71 Galaxie Join Date: Mar 2007
Location: Wenatchee, WA
Posts: 3,670
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Can't you reset the ECU by unplugging the battery for a while?
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11-03-2010, 09:30 PM | #18 |
Drives: '09 Yaris carmine red 2d HB Join Date: Jun 2009
Location: Middletown, NY
Posts: 1,502
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Yes, that will set it back to the default setting.
BTW..... Something just occured to me. I frequently access WOT as I'm not concerned about fuel economy. Even at its lowest, it's good enough for me. So maby if you are constantly driving for economy, the ECU might be getting programed with some throttle lag to increase gas mileage. This might explain why I don't have any lag. It would be interesting to know how people drive and how it realtes to throttle lag. Last edited by RedRide; 11-03-2010 at 09:41 PM. |
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