A few obd2 questions.
Discussion
Well I got myself a new toy to play with. 
A obd2 reader, using touchscan. But I have a few questions. A snip below.
Long term fuel trim, -14.06% seems quite high, the car runs ok, no warning / check lights, but is very thirsty for what it is (A twingo gt 1.2 tce 100, gets about 25mpg to 35mpg - but bear in mind this is mainly town driving, short runs etc). Short term fuel trim (bank 1, sensor 2) is always -100. (Although it might just be touchscan is saying there isn't a sensor 2).
A obd2 reader, using touchscan. But I have a few questions. A snip below.
Long term fuel trim, -14.06% seems quite high, the car runs ok, no warning / check lights, but is very thirsty for what it is (A twingo gt 1.2 tce 100, gets about 25mpg to 35mpg - but bear in mind this is mainly town driving, short runs etc). Short term fuel trim (bank 1, sensor 2) is always -100. (Although it might just be touchscan is saying there isn't a sensor 2).
I think we found the problem, in the end up I asked a Renault tech to have a look at it. Pretty much its the previous owners fault.
The pipe from the intercooler to the throttle body was just a straight rubber pipe (it was oem looking to be fair. With a t piece between the throttle body, bov and the pipe itself.
The oem pipe is about half the diameter with a Inlet temperature sensor on it. So it was put back the the way it was when it came out of the factory. It idles a lot better, doesn't kangroo when cold, and seems far more torquey low down. Done this yesterday so I'll monitor it for a while, but I think it might have cured it.
Pc olly (previous owner) is a massive eejit.
The pipe from the intercooler to the throttle body was just a straight rubber pipe (it was oem looking to be fair. With a t piece between the throttle body, bov and the pipe itself.
The oem pipe is about half the diameter with a Inlet temperature sensor on it. So it was put back the the way it was when it came out of the factory. It idles a lot better, doesn't kangroo when cold, and seems far more torquey low down. Done this yesterday so I'll monitor it for a while, but I think it might have cured it.
Pc olly (previous owner) is a massive eejit.
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