I have a 2008 Toyota Yaris that I bought in 2010. The car developed this issue about 2 years ago to which I have spent a lot without any solution:

1. If I press the brake while I motion, it takes a lot of time to pick up speed again when I decided to accelerate again.
2. I will have to press the accelerator to the highest level before it picks up, only to repeat No. 1 above again.
3. If I put on the AC, most times it works. Most times, the car will start vibrating until I am forced to put off the AC. The AC will also start blowing hot.
4. If I am unfortunate to enter "hold-up", the car will be vibrating so vigorously. It also off itself intermittently, which necessitates re-starting everytime.

I have spent a lot on it including taking it to auto-garages for scanning and repairs. I have changed practically everything, including fuel pump, filter, plugs, IC, coil etc etc.

I will be glad to get professional recommendation here.

Wherr is your location?

Lagos

mayor2013:
Wherr is your location?

the fault could be from your transmission,but i will advice you to bring it down to my work shop,so that will can run proper diagnosing test on the car.here is my location 11,oke ho,ire-akari,isolo,lagos,very close to KJ or you can also call us on 08032089850,08026941215

spora:
I have a 2008 Toyota Yaris that I bought in 2010. The car developed this issue about 2 years ago to which I have spent a lot without any solution:

1. If I press the brake while I motion, it takes a lot of time to pick up speed again when I decided to accelerate again.
2. I will have to press the accelerator to the highest level before it picks up, only to repeat No. 1 above again.
3. If I put on the AC, most times it works. Most times, the car will start vibrating until I am forced to put off the AC. The AC will also start blowing hot.
4. If I am unfortunate to enter "hold-up", the car will be vibrating so vigorously. It also off itself intermittently, which necessitates re-starting everytime.

I have spent a lot on it including taking it to auto-garages for scanning and repairs. I have changed practically everything, including fuel pump, filter, plugs, IC, coil etc etc.

I will be glad to get professional recommendation here.

You need a scan from someone that knows his onions cause a couple of things e.g. faulty accelerator position sensor, trottle position sensor, clogged idle air control valve(vibrating when stationary), knock sensor etc

Scanning would point one in the right direction

That is common on yaris, just try to ran a scan first, I have seen a situation where by they changed almost every part on the car but no avail, you can call this guy 08038042709 he will help .

Check your transmission fluid level - low trans fluid level = low power from acceleration.

Check your fuel supply line - fuel pump, spark plugs, injectors.

Check your air intake system - maf metres, sensors, throttle systems, air filter. Etc

Exactly of your problems above happened to me on my Corolla 2010. I solve it with added trans oil and working on the throttle system.!

Thank you, all. I am learning

spora:
Thank you, all. I am learning

Good morning Spora ,
Please were you able to get a solution to this your yaris issue ?
If Yes
Kindly chat me up on 08035543262 or drop your digit
My car has this same issue .
Thank you.

BestvalueEnt:

Good morning Spora ,
Please were you able to get a solution to this your yaris issue ?
If Yes
Kindly chat me up on 08035543262 or drop your digit
My car has this same issue .
Thank you.

There was a similar Yaris with same problem that Autologic successfully fix when I was undergoing training with him .Look for Autologic to fix this issue for you .