Harryaudia3

I have just this moment found that the clip holding the engine coolant temperature sensor (g62) was warped and letting out some coolant, so I imagine it was also letting air in or out. I am going to replace the sensor, clip and rubber seal and see if this fixes the issue.

Hi Clifford, Thanks for the reply. I bought it privately so no chance of return... I'm not trained in mechanics at all but am quite happy to give anything a go so hopefully labour costs will be nil to low. mileage is between 97000 and 98000, not much service history but the oil is very clean and the air filter looks almost new. I think it'll need a Cambelt done soon (no damage but 100,000 mark around the corner so should need doing). My next step is to change the PCV and slowly work my way around the air intake system, was just hoping someone had a similar issue so I at least had something to work off. My particular model appears to have the PVC built into the oil filler neck, which is weird but I have been told it does happen from time to time. Any chance the cambelt would cause these issues? I wouldn't have thought so but worth a mention I guess. Regards, Harry

Hi everyone, I am a first time Audi owner and bought my 1.6 petrol 2004 a3 a few weeks ago. (I was very hungover when buying so forgive me for not checking the car better on purchase) I have an issue that is similar the one above except I have constant rough idling, white smoke constantly when the engine is up to temp. To add to this, I also have hesitation when driving, it also appears to automatically drop or add revs while driving (especially around the 2000rpm mark) My initial thought was it must be an air intake issue, however after replacing the main intake pipe, it is exactly the same. I have purchased Carista but the only fault codes being read are for the heating and air con and body/convenience. The air con codes are: 01592 Air quality sensor (G238) and 00819 High pressure sensor (G65) the fault code for the body/convenience system is: 00352 Clamp 30A. Surely these are separate error codes and wouldn't effect the actual engine? Please if anyone can help point me in the right direction I'm pulling my hair out trying to work this one out...