Q: Won't fire but will crank.

Hello. Thanks for writing in about your 2009 Audi A5 Quattro. If you are having a lean condition, then the fuel pressure needs to be checked. The most common cause of a lean code on this car is either low...

Hello there, thanks for writing in. The spider gears are only used when you are turning left or right, unless you have two differently-sized tires on the same axle, in which then the spider gears will turn all the time....

Hello. It sounds like you do not have a transmission problem at all. I have seen this same vehicle have electrical issues which will cause the vehicle to stop shifting correctly. If the transmission continues to go out, I would...

You can get an ECM-related code for a number of different reasons. It can be something as simple as a voltage loss from a bad battery connection, or it may need a new ECM. I usually check the codes and...

You probably damaged a lower control arm. They aren't very strong and a slide into a curb is all it takes to bend one. There are a number of other components, like tie rods that can be damaged in that...

Hi there. There is either a break in the wiring on the lighting circuits for the main light switch or the ground wire to the main light switch for the running lights is loose or not hooked up. Check the...

There is a technical service bulletin (TSB) for this issue that states the daytime running lamp thumb wheel may get switched off by mistake. Check to make sure the thumb wheel is in the corrector position. It is located next...

In some cases, depending on how dead the battery (https://www.yourmechanic.com/services/battery-replacement) is, the battery may not be capable of holding a charge any longer. I would suggest taking the battery to auto parts store to have a load test performed on...

If the engine will not crank over after putting in a new battery then first check to make sure new battery is at least at 12 volts. Then clean battery clamps before installing and then see if it starts? If...