Q: No matter what setting the AC is on it'll only blow out if the defrost vents . I have changed the fuses thinking they may have bee

Hello, a P0300 is a general misfire code without pointing to any one cylinder. There should be more codes present indicating which cylinder(s) have a misfire condition. You are correct in stating that a misfire is a combustion concern. To...

This would need to be heard while driving the vehicle to try and to diagnose (https://www.yourmechanic.com/services/car-is-making-a-noise-inspection) if it is a brake or suspension problem. Recommend a qualified mechanic check it out for you.

Hello. Problems such as these can be caused by many things. Anything ranging from a bad vacuum leak, to a faulty idle air control valve (https://www.yourmechanic.com/services/idle-control-valve-replacement) will cause symptoms such as these. As engine performance problems can many times be...

Hi there, thanks for writing in about your 2001 Mercedes Benz ML430. This problem could be caused by a slipping belt (https://www.yourmechanic.com/services/drive-belt-tensioner-replacement) or a faulty belt tensioner (https://www.yourmechanic.com/services/drive-belt-tensioner-replacement). The power steering pulley needs to be observed while the car is...

These issues may be related. The battery is basically just an electronic storage device which must be charged regularly by the alternator. A good battery that doesn't stay charged points to a failing alternator (https://www.yourmechanic.com/services/alternator-replacement). A bad alternator can also...

Typically if you have bad stabilizer links then they should be replaced as an assembly. In most cases it is the bushings that fail, but the links that they mount to become distorted over time. To ensure that they last...

Check all of the driveshafts in the jeep and see if any universal joints are worn causing the shafts to move around when letting off the throttle. The universal joints (https://www.yourmechanic.com/services/universal-joint-u-joint-replacement) in the front axles are the most common joint...

Based upon the symptoms you are describing, it sounds like you may have a faulty camshaft position sensor. The camshaft position sensor is a magnetic sensor that monitors camshaft speed to regulate ignition timing and fuel injection timing. It gathers...

Hi Getze. Thanks for contacting us tonight. The OBD-II codes you've indicated show that you have a series of random misfires - specifically on cylinders #1 & #4. This may be caused by the new spark plugs or the plug...