Q: Car stuck in neutral, shifter is in park.

Controlling engine emissions requires a lot of different components. Catalytic converters are part of your exhaust system, and are responsible for burning off harmful gases, or converting them into something harmless (like oxygen). Catalytic converters use precious metals like platinum,...

The information provided for your Mercury is a bit limited, however, I can attempt to point you in the right direction. I assume we are talking about electrical power as you have questioned the alternator. The alternators job is to...

The exclamation point with a gear around indicates a transmission fault, which requires a professional scan tool to read and evaluate the codes. The fact that it resets every time makes me believe it is an electrical fault, but without...

Hello. I would check the condition of the transmission fluid (https://www.yourmechanic.com/services/transmission-fluid-service) first as well as the level. If the fluid is old or low then this will occur. If the fluid smells burnt or has debris in it then the...

Hello. It sounds like you may have a sensor reading wrong or the vehicle may have gotten bad gas. If this occurred right after the O2 sensor was replaced then I would suspect that the O2 sensor is not reading...

Hello. Thanks for writing in. The diagnostic code that is triggering your warning light it's a fairly generic code relating to a bad reading at one of the sensors. This bad reading can mean that there's an electrical or mechanical...

Hi there. Check the thermostat by watching the coolant temperature gauge. When the engine gets hot and the thermostat opens up, then needle moves down a little bit. If the needle does not move and the system seems to be...

It would be difficult to determine the exact cause of this issue without physically inspecting the vehicle. However, I can recommend that if it is possible for you, I would replace the engine with another new or rebuilt engine and...

There are a couple of things that usually will produce a whining noise from the drive belt area. A failing water pump (https://www.yourmechanic.com/services/water-pump-replacement) will produce a whining noise, which will typically be accompanied by overheating or coolant leaking as a...