Q: Car makes clunking noise

Based upon the information provided, an inspection of the drive belt and air conditioning system should be performed. The squealing noise indicates your drive belt is under strain. If the belt breaks, you will not be able to drive your...

The noise may be the lifters, but the problem may not be the lifters. Your engine's heads have very small passages that feed oil to them through the heads, and, if the parts are being starved of oil, then the...

Since you have a multimeter, check the battery voltage drop on each battery cable (https://www.yourmechanic.com/services/battery-cable-replacement) to see if the voltage drop is more than .2 volts to the starter and ground. If you have good cables and are getting a...

Hello. Most of the time when this issue occurs, it is due to a faulty idle air control valve (https://www.yourmechanic.com/services/idle-control-valve-replacement). This valve is responsible for letting some air from the air cleaner bypass the throttle body so that the engine...

Hi, thanks for writing in. These codes are both camshaft (https://www.yourmechanic.com/article/p0016-obd-ii-trouble-code-camshaft-position-a-camshaft-position-correlation-bank-1-by-jay-safford) and crankshaft (https://www.yourmechanic.com/article/p0018-obd-ii-trouble-code-crankshaft-position-camshaft-position-correlation-bank-2-sensor-a-by-jay-safford) correlation codes. While these codes can be caused by a faulty sensor, more often they indicate a problem with the engine timing components. This could be...

Hello. Without further detail as to the specific make and model of your car, it may be difficult to diagnose. However, most cars have a "safe mode" or limp mode" that the transmission ECU will enable when either the transmission...

Hello there, oil lights can be slow to respond to for a lack of oil in your 2004 BMW 320i. 10 liters of oil is excessive oil consumption. Excessive oil consumption is a problem and can damage your engine if...

This may be related to a faulty mass air flow sensor or potentially a bad throttle position sensor. The mass air flow sensor monitors air as it enters the intake system allowing for the proper amount of fuel to be...

First, check your transmission fluid level. a low transmission fluid level from a leak can cause many problems. If the fluid was not low. but seemed dark and burned, there may have been a mechanical failure inside the transmission whether...