Why does my Audi A3 misfire at idle?

The misfire keeps the car jumping between as low as 600 revs up to just under 1000 revs at idle. What seems strange to me is that this makes it much harder to pull away without stalling than it should, but once the car is actually rolling it appears to run perfectly.

What is fault code for Audi A4 running rough?

This article will review a technical help request from a shop for a 2009 Audi A4 running rough and setting fuel trim fault codes. The following fault codes were stored: P0507 Idle Air Control System RPM Higher Than Expected P0304 Misfire Cylinder 4.

Why does my car engine run rough while idling?

When your car engine runs as it should, everything should be smooth without any noise. When any number of things goes wrong, the engine can start running rough, especially while idling. By understanding the causes of a car engine that has a rough idle, you can resolve the issue easily.

What happens if you have a cylinder misfire?

Ensure you consult a good auto mechanic to fix the problem quickly if your engine is misfiring. This is because misfires reduce gas mileage and increases emissions, which can cause you to fail an emission test. Cylinder misfires can equally cause damage to other parts of the engine, like the oxygen sensors or catalytic converter.

What causes an engine to misfire at idle?

More specifically a lean condition. This is why there is a misfire at idle. Above idle, at faster engine RPM, there is no time for the cylinder to leak, so no engine misfire. The repair for this particular engine misfire is to replace the cylinder head and bad valves.

What makes a GM 4.8L misfire engine stall?

P0306: Cylinder #6 Misfire. P0307: Cylinder #7 Misfire. P0308: Cylinder #8 Misfire. Really bad gas mileage. Lack of Power when you accelerate your van, pickup or SUV. Engine may start, run for a few minutes and stall.

Is the Mk5 2.0 FSI rough idle and misfire?

Discussion in ‘ FSI (inc. GTI 2.0T) ‘ started by Hotgolf, Jan 11, 2014 . Have an issue with my MK5 2.0 BLX code fsi. I’m having a misfire issue, not just on idle but whilst driving. It’s bad enough that it feels like it’s running on 2 cylinders!

Is the idle issue 2.0T FSI a problem?

Yes it has been checked – replaced with a new one to see if there was a change. No change. The idle issue isnt THAT bad and has improved since I had a cylinder 2 misfire and replaced all the coil packs a few weeks ago.

What do you need to know about the Audi A3?

Roll-away safety: If you happen to stop and open your driver door while the ignition is On and the A3 is in gear; the EPB will automatically set. Emergency brake: While moving, you can hold the EPB switch up and it will slow and stop the A3, with anti-lock brake protection. Figure 4. Electromechanical parking brake.

What does the fault light mean on an Audi A3?

Cooling System Fault Light. This symbol illuminates red to indicate there’s a fault within the engine system cooling system. Engines that overheat can seize. If driving and this symbol illuminates, pull over and switch off the engine immediately.

How does Hill Start Assist work on Audi A3?

To use Hill Start Assist, you must be in gear, with the driver door closed and your seat belt on. When you stop on a hill, set the EPB. The A3 will stay in place until you press the throttle, which automatically releases the EPB.

What was the problem with the Audi A3 Sportback?

The curtain airbags on some Audi A3 Sportback models built in 2005 had to be replaced by Audi due to a fault that meant they might not inflate if the car was involved in an accident. The problem was caused by a faulty seal, which would allow gas to escape from the gas generator.

Which is the best trim for an Audi A3?

Sports suspension was available as part of S line trim, but is best avoided because it makes the ride harsh. We prefer SE trim, with its good level of specification and more comfortable standard suspension. The second-generation Audi A3 is a great car, but there are some common problems that buyers should look out for.

What causes an Audi A3 to lose power?

On a number of cars built during 2008 and 2009, there was a fault with the clutch temperature gauge that could cause the car to lose power because the clutch would engage. This was rectified by Audi reprogramming the faulty gearboxes.

Is the Audi A3 se a good car?

We prefer SE trim, with its good level of specification and more comfortable standard suspension. The second-generation Audi A3 is a great car, but there are some common problems that buyers should look out for. These issues should have been fixed by Audi, so make sure the work has been done before you buy.