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Old 04-09-2020, 07:12 AM   #1
Drives: Yaris 2014 Sept.
Join Date: Dec 2013
Location: Taiwan Taipei
Posts: 2
Maybe a idle vibration/shaking fix for your Yaris

Mine is 1NZ-FE 1.5 L (2014 automatic) ~ 2nd gen (last gen)
Only city short distance drive daily, only driven 48000 km ...
Park in clean & dry garage ( no sunlights in )...
Recently start shaking at stop lights when in gear D ...
Check with ODBII ~ no error code

Change denso dbl platinum sparkplug, sometime vibrating sometimes normal.
I follow the advice here on youtube
Change the PVC valve ( very cheap ), WOW ... now it's like Brand NEW ...

My PCV valve seems so new & clean, WHY ?? Here it is why...
I compare with the new one ...
There is a very small gap at the inlets, ( THE exact new one is totaly closed )
~~ maybe period time of compressing the spring & combine with the engine heat, has shrunk the spring inside ...
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