Q: Head Unit

Fuel economy has many influences on it which can raise or lower the MPG. Are you calculating fuel economy per tank or off the trip computer? The trip computer is a constant average that might be resettable (see owner manual)....

Hello. If your Jeep feels like it is slowing down on its own, then the brakes may be binding. It may have to do with the parking brake or it can be something else. I would typically get the vehicle...

Codes P0171 (https://www.yourmechanic.com/article/p0171-obd-ii-trouble-code-system-too-lean-bank-1-by-andrew-quinn) and P0174 (https://www.yourmechanic.com/article/p0174-obd-ii-trouble-code-system-too-lean-bank-2-by-blake-griffin) pertain to the engine running lean on both bank one, and bank two, meaning that both sides, or the complete engine, is running lean. The lean condition could be one of several possible causes....

It sounds like you may have a restriction in your cooling system that is preventing the proper flow of coolant through the engine. I would recommend having the system power flushed to remove any restrictions that may exist. The restriction...

Hi, thanks for writing in. There are a couple of possibilities. If the problem is lack of cranking the engine over, the problem could be a worn ignition switch (https://www.yourmechanic.com/article/symptoms-of-a-bad-or-failing-ignition-switch), starter solenoid or starter - due to burned contacts in...

If you remove the oxygen sensors from your vehicle, you will ruin the efficiency of the engine, thus consuming around 10 to 20 percent more gas than otherwise required, and also cause early failure of many components such as the...

Hi there. Check all of the cooling hoses (https://www.yourmechanic.com/services/radiator-hose-replacement) on the engine, to the heater core, and to the radiator. See if any hoses are cracked. Check to see if the clamps are loose and need tightened or replaced. Look...

Hi there. Sometimes this type of noise is caused by an electrical component failure inside the ignition cylinder. However, it could be caused by an electrical component such as a relay, timer, solenoid, or actuator that is switched on by...

Hi there - a common cause of this problem with BMWs is loose sway bar links (https://www.yourmechanic.com/article/symptoms-of-bad-or-failing-stabilizer-bar-links). It is also possible that one of the many heat shields has come loose somehow and is rattling. I recommend a noise inspection...