Sorry for digging up in Old posts but was searching for EFI Mechanic and this Thread pop out.
Today went to him after driving 12 KM in scorching heat.
My Swift 2011 Is giving P-0134 Code that is of Bank1-Sensor1 Oxygen sensor Error.
I went to him and asked 2 of his "Chotu" to work on my car.
They scanned the car and took out Liana's sensor and fit on my car and asked to for test drive and the code came up.
They went to shafiq more to get a kabuli sensor and after Fitting it the Voltage of Sen1 drops to 0 when not accelerating and gave code after 5 KM.
Tariq sab went somewhere and i was depended on his chotus.
They Again went to buy kabuli sensors and this time they bought 2 sensors and Fixed on my car and both gave the same code.
I asked his chotus that the OEM code is not matching but the insisted that It is not the problem
Ultimately,,Tariq came back and after seeing my car for merely a second asked his CHotus to fix my original sensor and said that it is not the problem of sensor after wasting my 4 hours in 40 centigrade.
So,I asked him to return my 3k of the sensor and he told me to get it tomorrow 
I was like WTF.
I told him to return it yourself and i am not responsible so he came up with a logic that he doesnt have money xDDD
I get out of his garage and told his chotu to get my 2.5k and keep 500 as a labour,eventhough the work was not done.
He got back with 2k rupees and asked me to get 500 tomorrow and this time I strictly asked him to get my 500 back and eventually tariq gave him.
Tariq himself is an expert but Wasted my 4 hours in this heat.
A flopped journey!
