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Old 09-11-2019, 05:17 AM   #1
Drives: Yaris Diesel 2007
Join Date: Sep 2017
Location: England
Posts: 9
Clunking when car accelerator is pressed + Heavy clutch

Hi all,

I have a 2007 Toyota Yaris Hatchback 1.4 diesel with 196,000 miles on the clock.

I have had this car for 50,000 miles now but most of the time when I press the accelerator after changing gear or after releasing the accelerator fully and then pressing back down on the accelerator I can hear a clunk noise and the car jolts a little bit (although this is not that bad). It doesn't do it all the time, but does it for the majority. I'm thinking it is something to do with the throttle plate but wanted to know if anyone else has experienced this and what it could be?

Also my clutch is heavy to press in, so wondered if this is a characteristic of the diesel Yaris or if anyone knows of an issue causing this? Is there a clutch assistance spring on the pedal that may be past its use now or could I get a spring to help push the pedal down?

On a related or unrelated note, my brakes also make a squish sound when pressing the pedal initially. Does anybody else have this or could this be trapped air in the system?
AdamDavis is offline   Reply With Quote
Old 09-11-2019, 07:09 AM   #2
Drives: 2010 yaris 3 door hatch
Join Date: Jun 2013
Location: Sheboygan Falls, Wi.
Posts: 266
I'd check the motor mounts for the clunk.
ex-x-fire is offline   Reply With Quote
Old 09-11-2019, 08:21 AM   #3
Drives: 2010 Yaris LB
Join Date: Jan 2019
Location: Rochester, NY
Posts: 25
I agree with ex-x-fire about the motor mounts. Here's a helpful video on diagnosing that problem.

Squishy brakes are very good evidence that there's air in the system, so I would recommend bleeding them.

I'm not sure about the clutch.
johnwk is offline   Reply With Quote
Old 09-16-2019, 01:12 AM   #4
Drives: YARIS
Join Date: Jun 2017
Posts: 63
whats the update?
rayfloyd170 is offline   Reply With Quote

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