Exhaust problems

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Unstable idle speed and exhaust smell

Toyota Yaris 2009  290000 miles
Hi, some days ago, the idle speed started being unstable. I noticed this when braking at a traffic light after driving at high speed and also when turning the engine off and starting it again; it starts with around 500 rpm and it is only after some minutes that it normalizes. The other problem is that there is a terrible smell coming from the exhaust, and also that, when changing to first gear, a strange noise is heard. It seems to be a clutch or bearing sound. Please help me. Thanks.
Mike from United States 9 years ago  
MI
2 reports 
Mike from United States 8 years ago
Well, I finally discovered that the noise is coming from the thrust bearing and, talking about the idle speed unstable, I cleaned the air flow meter, throttle body and oxygen sensor.
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Stalls when driving

Toyota Yaris 2008  350000 miles
My vehicle suddenly stalls when driving. I've already changed the fuel pump, temperature sensor, catalytic converter, crankshaft and camshaft sensor and the oxygen sensor that is right after the catalytic converter, but still it starts, works perfectly at idle speed and, when I start driving it, it loses strenght and stalls. Does anyone know what it might be?
Scottie from United States 8 years ago  
SC
8 reports 
Araminta from United States 8 years ago
What might be failing is the MAF sensor, the air flow meter or the MAP sensor. You should as well check the air pressure in the intake manifold.
edsel from other 7 years ago
I have a yaris 2012 model and we are the same problem i also change all sensors including maf sensor and i change also the fuel pump but still the problem not solve. Any one can help me?
Bra courage from other 4 months ago
@edselPlease I want you to check your cracks sensor cable under the engine at the side of the fun belt
Bra courage from other 4 months ago
@Bra courageSometimes the fun belt can eat up the cable when it is touching the fun belt
Jess from Australia 6 years ago
I have a Toyota Yaris 2007 model and it stalled when stopped at lights and when I would drive slowly through traffic. 4 mechanics could not locate the problem. I went to black label automotive in Nerang and they managed to find the problem straight away. They replaced the oxygen sensor. There have been no problems since :)
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Engine light and traction control lights on.

Toyota Yaris 2010  149000 miles
Why? One mechanic said wheel sensors. Another said the error codes are everywhere from catalytic converter to others.
Tammy from United States 3 months ago  
TA
1 reply 
Tammy from United States 2 months ago
We are replacing an o2 rear sensor to see if it solves the problem. If not it may be the catalytic converter. I hope the sensor fixes it. Hate to think about buying a converter when we only paid 5000 for the car
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