rough idle

Hi everyone, Background I have an AUDI A3 1.6 TDI 2010 (8PA), 126K mileage. Last year, it was overheating and so was driven without a thermostat for approx. 6 months until the cause was identified and fixed (it was the heater matrix which was replaced alongside the heater matrix connecting...

Hello all My A5 2.0TDI has just started having a wobble on idle, it’s fine when driving and no loss of power When I start it up, it will tick over but the rev needle starts to bounce up & down a bit Done a quick scan and it brought up (as picture shows) fault code: 5174 Fuel Pressure...

I just picked up a 2014 3.0T S5. 61350 miles It’s had regular services. The car pulls well, no obvious misfire under load but there’s a subtle vibration / rough idle. It occurs in park, neutral, drive and sport mode. No warning lights on the dash. It did have a fault code for the PCV...

Hi all, I have a fault with my 8P A3. It's a 2008 model 1.6 petrol engine. Some times when I start the car, it idles very rough and the EPC and ESP lights come on. If I press the accelerator, the revs barely go up. If I switch the car off and switch it back on, the lights disappear and the car...

Hi everyone, Just thought I’d share this with people in case it is not well known and stumbled across this by accident when trying to order a dipstick gasket at TPS yesterday. They sold me a yellow whole unit rather than just the o ring at top, as an inlet smoke test the other day showed smoke...

Every full tank I have 2 occasions of rough idle and the radiator stays on Hi, I have had my audi a6 c6 Le Mans 2.0 tdi le mans 2010 for over 2 years now. Car looks and runs beautiful but every full tank I have 2 occasions of rough idle (revs fluctuating up and down) and with that the radiator...

Every full tank I have 2 occasions of rough idle and the radiator stays on Hi, I have had my audi a6 c6 Le Mans 2.0 tdi le mans 2010 for over 2 years now. Car looks and runs beautiful but every full tank I have 2 occasions of rough idle (revs fluctuating up and down) and with that the radiator...

Every full tank I have 2 occasions of rough idle and the radiator stays on Hi, I have had my audi a6 c6 Le Mans 2.0 tdi le mans 2010 for over 2 years now. Car looks and runs beautiful but every full tank I have 2 occasions of rough idle (revs fluctuating up and down) and with that the radiator...

Hi, looking for a bit of help is anyone can .. so my 59 plate B8 A4 2.0 tdi has been acting up the last few weeks. I’ve had it on the diagnostics and apparently it was injector 4 needing replace. The garage has sent away my injectors to test and it’s came back injector 4 faulty. So the garage...

Hi guys, i hope you have some insights that might help me Car: A4 Avant B7 2.5 TDI BDG Multitronic 230k KM Changed the gearbox oil around 40k km. The car had the wrong oil in the gearbox, and it wasn't filled up properly, this solved the "grinding" in winter, when just started the car. No...

Morning All, Looking for some pointers as i have tried everything i can think of. I have a 2010 Q5 2.0T that runs rough on idle i have replaced various parts and now i have hit a brick wall and not sure what to try next. Parts replaced: PCV Valve, N80 Valve, Coil Packs, Spark Plugs. Current...

Hi, Looking for some advise from people to what they think this could possibly be or have experienced it themselves. On a cold start leaving the car over night when starting in the morning there’s a noise coming from what sounds like the back for the engine. The noise disappears when the...

I have an audi A3 2010 8PA 1.6 model, I have just purchased it and found the ideal to be constantly rough, I have changed the spark plugs, about to look at the coil pack and the HT plug leads next. Fingers crossed this sorts it, any other suggestions welcome?? Car also does a lot of heat...

Hello all. Been noticing recently that if I am stopped in traffic that I am getting a rough idle, seems to go away when I accelerate or switch on the AC. Am thinking it may be the MAF, any ideas?? Peter

Right I have a face lift S3 at stage 1 but is now stage 2+ Ready Booked in on 20th @unicorn just installed new intake again and new fuel pump internals car drives fine went over to my grandmas caravan near Scarborough (60 miles) drove fine drove fine back until about 20 mile from home come off...

Hi, I own a 1.6 tdi Sport A3. It's a 2011 plate and only done 45000 miles. Over the last month or so I've been having some issues with the engine that seem like they point towards a problem with the DPF but so far I've had no warning light for both that or the engine. Here is the problem: I...