This person is having trouble with their Audi A4 engine idling roughly.
I get a lot of calls from customers looking to replace their engine because it “runs rough.” I’m always happy to sell engines, but I prefer to help folks like this out with knowledge. The truth is, most of the time if an engine runs rough, you’re dealing with a problem external to an engine. Audi engines will commonly run rough if they have coils failing or a faulty ignition coil switch, but the reality is that a leaking vaccuum line, leaking intake manifold gasket, or even a clogged air filter can all cause an engine to run rough. On many vehicles, a dirty throttle body won’t function properly and can cause rough running. If you replace an engine when it’s not the problem, you will still have your original issue – a rough running engine.
Having a good, diagnostic mechanic is one of the best assets a driver can have. If your engine is running rough, you’ve checked the above mentioned issues, and you just can’t pin point the problem, you’ll need a good diagnostic mechanic.
In an upcoming blog article, we’ll talk about how to find a good mechanic. I’ll share a few simple tips that our salespeople have shared with thousands of customers to help them save money and drive with the confidence that their vehicles are ship shape.