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Old 08-25-2009, 06:22 PM   #1
BuildCode
 
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Clutch shudder when setting off in 1st gear

I love this forum, just got my Yaris 900 miles ago!!!

My Yaris' clutch shudders when starting from a stop in 1st gear, and seems to mostly happen at 1500rpm. It doesn't at all seem like a 'low power' shudder, as if I were letting the clutch out at too low an RPM or something.
On my last car I would be totally off of the clutch under 1000rpm, I like to put as little wear on clutches as possible, which means starting off at lower RPMs and being fully engaged relatively quickly. What RPM should I be hitting the friction point of the clutch with?

The shudder is especially pronounced when I engage a little quicker than normal, and hold around 1500rpm while engaging.

Is my clutch still being broken in - was it not broken in correctly - what's going on!? I've been extremely careful on the clutch over the 900 miles I've had the car.



I've searched and only saw one other thread with this problem and it didn't seem to match my issue.
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Old 08-25-2009, 06:25 PM   #2
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wheel hop?
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Old 08-25-2009, 06:32 PM   #3
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i had the same problem when i got my 09. give it a little while it will go away.
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Old 10-10-2009, 01:47 AM   #4
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So, FYI, my car does the same thing in first (I have 22,xxx miles on mine).

In addition, it does it in reverse quite badly. Anyone have the shudder in reverse issue?
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Old 10-10-2009, 02:11 AM   #5
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Yes, mine does it both in 1st and reverse.
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Old 10-10-2009, 02:30 AM   #6
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yeh i am at 40,000 km and its bugs the hell out of me i think in fact it is a low power shudder because the higher the rpm the less it happens
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Old 10-10-2009, 08:57 AM   #7
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Yeah mine does that in 1st as well. It's a 2007 with nearly 30,000. Seems worse when it's cold. I think the yaris just prefers a higher rpm roll out.
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Old 10-10-2009, 10:43 AM   #8
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It's been 1500 miles since I posted. Problem has 'gone away' but I think it's just that I learned how to set off without causing the shuddering. I still set off at a low RPM (put the engine around 1000 rpm and hit the friction point).

I don't like to try it since it feels bad for the car, but I think quicker engaging of the clutch at higher rpms (1500rpm) causes it.

It's weird I had to re-learn how to drive stick shift after driving stick for over 3 years in my previous car :)
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Old 10-10-2009, 10:55 AM   #9
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does it to me some, but its not the same shudder as when you don't give it enough power when starting out.
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Old 10-10-2009, 11:05 AM   #10
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Kinda happened to me in 1st on rare occasions, its when the clutch is released to early and there's not enough gas pedal action. Haha. Seems pretty normal from other peoples experiences.
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Old 10-10-2009, 11:51 AM   #11
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I agree with a couple of other comments here, I think you are just letting out
the clutch too early and too quickly.
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Old 10-10-2009, 12:38 PM   #12
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It happens when its cold. Then it goes away when the car starts to warm up. Its not because the clutch is being let out too early.
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Old 10-10-2009, 12:43 PM   #13
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Quote:
Originally Posted by ddongbap View Post
It happens when its cold. Then it goes away when the car starts to warm up. Its not because the clutch is being let out too early.
+1

happens to me. pisses me off.
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Old 10-10-2009, 12:49 PM   #14
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main cause DBW , not enough power to get the thing rolling. just give a tad more gas and the shudders disappears. as for the cold weather i think it influences the hydraulic fluid in the that actuates the clutch, the colder the weather the more "compressed" the fluid is therefore it takes slightly longer to actuate the clutch.
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Old 10-10-2009, 01:31 PM   #15
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Quote:
Originally Posted by Kaotic Lazagna View Post
Yes, mine does it both in 1st and reverse.
me too...
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Old 10-10-2009, 03:16 PM   #16
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ya.. the DBW changes the way you sync your left foot with your right foot. You just got to get used to it.
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Old 10-10-2009, 06:42 PM   #17
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Quote:
Originally Posted by PK198105 View Post
main cause DBW , not enough power to get the thing rolling. just give a tad more gas and the shudders disappears. as for the cold weather i think it influences the hydraulic fluid in the that actuates the clutch, the colder the weather the more "compressed" the fluid is therefore it takes slightly longer to actuate the clutch.
Hydraulic fluid cannot be compressed. That is why, it is hydraulic fluid. Colder weather may reduce the volume but not its ability to transfer force.
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Old 10-10-2009, 06:51 PM   #18
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it sounds like clutch chatter because you're slipping it too long...
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