Q: I'm debating on buying an Audi A4 today , the owner claims that it needs a vaccume tube but say it won't crank or start,

When you see a flashing Low Coolant light on your Saturn’s dashboard, the coolant level sensor is reading that there is no coolant in your expansion tank. This is very easy to verify, just be sure your car is cold,...

This is a failure of the seat occupant sensor. This is very common on your vehicle. The sensor fails and makes the computer think that there is someone in the seat. The sensor would need to be replaced as the...

That is a very tough question to answer without being able to see the vehicle first hand. That is a lot of miles, but if it was mostly highway miles, that isn't so bad. If it was a lot of...

There are several issues that could possibly cause this issue. A bad connection (https://www.yourmechanic.com/services/electric-problems-inspection), a failed starter (https://www.yourmechanic.com/services/starter-replacement) (or starter solenoid), a bad relay (https://www.yourmechanic.com/services/starter-relay-replacement), or any number of other possibilities. It would be best to have a certified mechanic...

At 180.000 miles, it could be just about anything. The P0161 and P0140 codes are oxygen sensor codes, and probably don't have anything to do with the starting issue, though you should have that investigated (https://www.yourmechanic.com/services/air-fuel-ratio-sensor-replacement). The P0300 code however...

You're getting into an area that is kind of a dark art when you're getting these kinds of codes. While I don't know any of the symptoms that the car is exhibiting, I can tell you that failure in one...

Trapped air in the cooling system can sometimes account for this but you are indicating that you are getting heat, at times, which would indicate that coolant is flowing. There is a heater control valve (https://www.yourmechanic.com/services/heater-control-valve-replacement) and you want to...

Hi there - I think you have unrepaired damaged still. The vibration you feel through the steering wheel (https://www.yourmechanic.com/article/how-to-diagnose-a-shaking-steering-wheel-by-timothy-charlet) is an out-of-balance tire, bent wheel, or tire that is separating. It is also possible the vibration/noise is coming from the...

For all of the electrical issues with your vehicle either there is a loose ground wire from the chassis to the frame or the ECM (computer) has malfunctioned and needs flashed or replaced. I recommend seeking out a professional, such...