Q: My speedometer has stopped working

This is a common problem with many vehicles that use a two-piece lug nut design. In general, the outer piece of the lug nut loses tension on the inner lug nut due to over-tightening or normal wear & tear. If...

The exhaust problem is likely from your flex pipe. The flex pipe allows your engine to move while the exhaust is stationary. It is a common repair which requires a welder and tools. The oil leak needs to be cleaned...

Hello there, thanks for writing in. I'd be happy to offer my insight on this. The correct time to replace the rotors on a vehicle will depend on many factors including driving conditions and mileage. If there is no noticeable...

Hi there. The code P115D (http://www.obd-data.com/p115d.html) is for the mass air flow sensor (MAF (https://www.yourmechanic.com/services/mass-airflow-sensor-replacement)). It says that the sensor has an offset signal. The code P2178 (https://www.yourmechanic.com/article/p2178-obd-ii-trouble-code-system-too-rich-off-idle-bank-1-by-jay-safford) says that bank 1 is too rich. This means that the engine...

Hello. Most of the time when a tapping noise starts on this engine it is from the valvetrain. It can be a failure in the clearance of the valves, or more commonly it is a failure in the variable valve...

Hello, thank you for writing in. The master cylinder may make some noises, however it is rather unlikely that you are going to hear these fluid sounding noises over the engine noise. Start by adding the differential fluid and take...

Hi there. The PCV (Positive Crankcase Ventilation) Valve maybe plugged up causing the engine to not release any pressure in the engine. So the engine may have built up too much pressure to blow off the oil fill cover. If...

This is normal when the AC is on. The air conditioning compressor requires torque from the belt system on the engine to power it. When the AC is off, the compressor clutch does not activate, meaning the AC is not...

Hi there. Typically when an EVAP system component fails or is damaged, it will cause performance problems, issues filling the fuel tank or other symptoms with the operation of the vehicle. If you are not having these problems, it's likely...