Why is my Audi A4 B7 running rough?

When your engine is running rough, both at idle and while running, you could have a spark issue. The coil packs control the spark timing of each plug and sends that electrical signal through the plug wires and down to the plugs themselves.

Are there any reliability issues with the Audi A4 B7?

This section covers the potential reliability issues that you might have with the Audi A4 (B7). Click on the buttons below to read more about typical problems that fall outside of the scope of routine maintenance.

Why does my a / C fail on my B7 A4?

The primary cause is usually leaks when A/C systems fail, but in the case of the B7 A4, it is more likely to be the compressor itself. You can identify if you have the Zelex or Valeo compressor by the pulley.

Is the Audi A4 B7 a seven speed transmission?

One more virtual speed had been added earlier, making the Multitronic a “seven-speed” transmission, but this is not related to the clutch pack update. The seven-speed software was implemented in the Audi A4 (B7) from the start of production. However, the important difference was the clutch pack upgrade in 2006.

Is the transmission a problem on the A4 B7?

The transmission is considered one of the more trouble prone components in the Audi A4 B7, but don’t be intimidated; this guide will help you diagnose issues. This article applies to the Audi A4 B7 (2005-2008).

Is the B7 A4 2.0T a good engine?

While it is a fantastic platform, the 2.0T longitudinal engine in the B7 A4 has some shortcomings. Fortunately, those drawbacks are well-documented and easily remedied with our help. This is what you need to know to make your B7 A4 reliable and what you can expect to perform should you go out and pick one up for yourself in the near future.

Why is my Audi B7 A4 losing power?

When the Diverter Valve diaphragm fails, it causes a boost leak, which means you’re losing power under boost. To fix this, it’s as simple as replacing the DV with either an OEM unit or an aftermarket upgrade.