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02-19-2016, 03:52 AM | #37 | |
Drives: Yaris Verso 1.3 2000 automatic Join Date: Nov 2015
Location: Poland
Posts: 33
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This article helped me to understand the concept of VVTi: http://www.drivenracingoil.com/news/...-on-motor-oil/
Quote:
This problem would probably go completely unnoticed in a car with manual transmission because a driver would compensate the problem releasing the clutch at slightly higher revs. Summary: - my problem was related to VVTi - adding more oil to 100% on the dipstick cured it - replacing O2 sensors with new ones made the engine work considerably better (more power) and made the VVTi symptoms less annoying - replacing MAF Sensor didn't make a noticeable difference in the way the car works |
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02-19-2016, 04:57 AM | #38 |
Drives: Yaris Verso 1.3 2000 automatic Join Date: Nov 2015
Location: Poland
Posts: 33
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It was an interesting experience to drive the car with VVTi disengaged. The difference was much less torque at lower RPM. It helped me understand what difference it makes.
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02-19-2016, 01:14 PM | #39 |
Drives: 2014 Yaris SE Join Date: Apr 2014
Location: NYC
Posts: 1,076
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I think it is simply a coincidence that your symptoms stopped after adding oil. I suspect they will reappear. Low oil level should make no difference, it is the oil pressure that matters. Now if the oil level was EXTREMELY low, it is possible that the engine would lose oil pressure. But at that point a faulty VVTi would be the least of your problems.
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02-19-2016, 01:34 PM | #40 |
Drives: '08 2zr swapped Vios M/T Join Date: Oct 2012
Location: Caledonia Ont.
Posts: 2,938
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^agreed
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No one ever wants to give a Yaris the point by... |
02-19-2016, 03:18 PM | #41 | |
Drives: Yaris Verso 1.3 2000 automatic Join Date: Nov 2015
Location: Poland
Posts: 33
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Quote:
Some important point that will be useful for other users in future: If you have a problem that shows itself only after the cold engine warning light turns off, it is very likely that it is related to VVTi. |
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