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Old 06-12-2020, 05:00 PM   #1
Charlieclangers
 
Drives: Toyota Yaris MK2 2011
Join Date: Jun 2020
Location: My driveway(London)
Posts: 4
150000 miles Yaris 2011 poor acceleration and power fluctuations.

Hi , I purchased a Toyota Yaris 2011after owning it for just over 3 months. It has 99000 on the clock but mytotota paperwork says 15000 🤷🏼*♂️.we only got this after getting documents through from DVLA for vin but that's another story

ISSUE: I started to notice poor acceleration and a fluctuations in power when driving along in the same gear not.moving my foot from the accelerator.

GARAGE OPPION : Having taken it to a Toyota specialist there oppion is it needs a new timing chain. Having looked at my Toyota it said a new one had been fitted in December of 2019.They found no issues with exhaust pressure either which is something we had thought it might have been .

OUR OPPION : having read about it a bit online we've read about vvt solenoids causing similar issues with rpm fluctuation

SALIENT POINT: where in the engine would I find the vvt solenoid and dose anyone have any expiernce with similar issues on high milage Yaris . I get about 30mpg for city driving

Any advice or help would be greatly appreciated thanks in advance

Charlie
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Old 06-12-2020, 07:15 PM   #2
ex-x-fire
 
Drives: 2010 yaris 3 door hatch
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https://www.youtube.com/watch?v=3GgRZS0sRRI here's a video. Do you have any codes? Did you have the maf sensor cleaned?
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Old 06-14-2020, 10:25 AM   #3
Charlieclangers
 
Drives: Toyota Yaris MK2 2011
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Quote:
Originally Posted by ex-x-fire View Post
https://www.youtube.com/watch?v=3GgRZS0sRRI here's a video. Do you have any codes? Did you have the maf sensor cleaned?
So I had a watch of that video and we have different engine bay layouts I can't see behind the alternator. The only code I have is p0420 which is for an oxygen sensor bank 2. I have also cleaned the MAF sensor using MAF sensor cleaner I'm not sure weather it helped or not due to a bias in my oppion in hopping it would resolve or partial fix the issue
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Old 06-14-2020, 02:20 PM   #4
WeeYari
 
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Where do you live and what engine do you have? Your location of "My driveway" tells us nothing. If your engine bay layout is different, then you do not have the common 1.5l 1NZ-FE engine most of us are familiar with.
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Old 06-15-2020, 09:22 AM   #5
Charlieclangers
 
Drives: Toyota Yaris MK2 2011
Join Date: Jun 2020
Location: My driveway(London)
Posts: 4
Quote:
Originally Posted by WeeYari View Post
Where do you live and what engine do you have? Your location of "My driveway" tells us nothing. If your engine bay layout is different, then you do not have the common 1.5l 1NZ-FE engine most of us are familiar with.

I live in London , car was registered in Bromsgrove . It is a 1.33 dual vvti. I believe it is a 1nr Fe engine

Here is an image I found of it ignore the circle


Thanks again
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Old 06-16-2020, 04:01 AM   #6
Kaotic Lazagna
 
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Don't know anything about that engine, but when was the last time that the spark plugs and coil packs were changed?

Does it only happen at a certain RPM?

I'd also clean or replace the EGR valve.
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Old 06-16-2020, 07:24 AM   #7
ex-x-fire
 
Drives: 2010 yaris 3 door hatch
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In the picture I see 2 solenoids angling into the valve cover just above the oil filler cap.
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Old 06-30-2020, 07:20 AM   #8
Charlieclangers
 
Drives: Toyota Yaris MK2 2011
Join Date: Jun 2020
Location: My driveway(London)
Posts: 4
Hi, all sorry for taking so long to get back to this post. I have since taken it to an official Toyota dealership. Their conclusion was this " Confirmed carbon buildup causing clogging (On the piston oil drainage holes)" Then they referred to their internal repair codes which are about fitting oversized pistons which are an official Toyota part for high mileage engines. They then went on to say " Due to high mileage it is also likely a new short block would be required estimated cost £4026.71 incl vat " I thought how nice of them to include vat on that price. So I am going to just purchase a used low mileage engine and install that instead, it should cost around £1500 fitted.

Thanks for all your help.
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Old 07-01-2020, 01:35 AM   #9
komichal
 
Drives: Yaris 2007 1.3 2SZFE 64kW
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Personally I would not pay that money just to get a new engine with unclear history, with POTENTIALLY low mileage and without guarantee that it will really fix your problem.
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