Burning Rubber Smell??? :S - Toyota Yaris Forums

djct_watt · 02-17-2010, 09:18 PM

Even when racing, I can shift quickly without doing a half shift. IMO, you should always completely depress the clutch when shifting. . . it's just a matter of timing. Full throttle should come on only AFTER the clutch is fully engaged. When you shift, you drop out of the powerband, but if you do not completely release the gas or get on it to early, you're back in the power band and the clutch slips until the revs catch up.

Just slow down your shifts for now.

Also, perform a clutch test to see if you've damaged your clutch. Park with the parking brake fully engaged. Shift into 5th and slowly release the clutch without any gas. If the car stalls, you are good. If it does not stall, your clutch is starting to go. Try 4th gear and then 3rd. If you do not stall in 3rd, you need a new clutch asap.

Another practice that wears down clutches is resting your left foot on the clutch and/or holding the clutch when stopped.

You may also have a bad pressure plate. . . but IMO, these clutches are pretty robust and can take a beating. I'd wager it's just your shift timing. The car only makes 100 or so HP, it's not designed to shift aggressively and will shift/burn if rush things too much. That and the revs do not drop very quickly which exacerbate the problem.

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02-17-2010, 09:18 PM	#7
djct_watt Drives: 2010 NCP91 5spd Join Date: Nov 2009 Location: Thailand Posts: 449	Even when racing, I can shift quickly without doing a half shift. IMO, you should always completely depress the clutch when shifting. . . it's just a matter of timing. Full throttle should come on only AFTER the clutch is fully engaged. When you shift, you drop out of the powerband, but if you do not completely release the gas or get on it to early, you're back in the power band and the clutch slips until the revs catch up. Just slow down your shifts for now. Also, perform a clutch test to see if you've damaged your clutch. Park with the parking brake fully engaged. Shift into 5th and slowly release the clutch without any gas. If the car stalls, you are good. If it does not stall, your clutch is starting to go. Try 4th gear and then 3rd. If you do not stall in 3rd, you need a new clutch asap. Another practice that wears down clutches is resting your left foot on the clutch and/or holding the clutch when stopped. You may also have a bad pressure plate. . . but IMO, these clutches are pretty robust and can take a beating. I'd wager it's just your shift timing. The car only makes 100 or so HP, it's not designed to shift aggressively and will shift/burn if rush things too much. That and the revs do not drop very quickly which exacerbate the problem.