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Some learned engine operating parameters values, stored in the PCM (engine computer), can be lost when the battery is replaced. However, after 25 miles or so, the engine should operate normally as it did before. If it doesn't, then there...

It sounds like you may some blown fuses from that shorted switch. Inspect the fuses and replace as necessary. An electrical wiring diagram and a digital volt/ohm meter will be needed for further diagnosis if replacing the fuses does not...

The front suspension has many moving parts which could cause the noise you describe. The most likely cause is the sway bar links binding. They can be inspected by turning the suspension steering and bouncing the car up and down,...

Coils and plugs are usually the starting point for a misfire code, but some basic diagnostic work might save you some money. Sometimes I like to try swapping components from cylinder to cylinder to see if the misfire moves before...

Hello. I would also need to know the year of the vehicle to be able to give you a really good assessment of the vehicle. From my experience with the CLK350 though, when you reach near 200,000 miles you would...

Hello, thanks for writing in about your Jeep Cherokee. The coolant temperature sensor for the gauge on your Cherokee should be on the back of the driver's side cylinder head. If you need some assistance with this, consider YourMechanic, as...

This is something that is likely related to what is called a neutral safety switch, which prevents the vehicle from being started while in gear. Your vehicle has a neutral safety switch that will prevent the vehicle from starting when...

Hello. This does appear to be a good deal for this car, but it needs to have a full inspection prior to being purchased. This car is nearing the time when it will usually get very expensive to maintain and...

Generally, when a water pump is going bad, you may hear a bit of a whining sound combined with the pump leaking. The most common place for the water pump to leak from is the pulley shaft seal which is...

Hi Charles. Thanks for the question today. If I recall correctly, the wiper switch on the driver side of the dash does require removal of the dash, as I don't think you can access it from behind the firewall. It's...

The crankshaft sensor is located on bottom right of transmission bell housing.

Some ticking noises can be normal. The fuel injectors do make a ticking noise as part of their normal operation and depending on the vehicle can be heard louder than usual. I would ask for help from one of the...

Since it sounds like you have ruled out tires and tire balance, it's time to start looking at other things. The problem could be the driveshaft or possibly a faulty wheel bearing. However, the fact that it goes away after...

Based on your description it sounds like the overheating is accompanied by a coolant leak. Coolant leaks can be either a cause OR a consequence of overheating. Be sure not to drive the car if it is overheating because overheating...

Hi there, thanks for writing in about your 1998 GMC Savana 2500. The speedometer and radio may work together to adjust volume of the radio as the speed increases. The cluster or any of the affected modules may have a...

From the description provided, it seems that your son is experiencing a hard start condition on the Ford Ranger. The symptoms you describe can be duplicated by many different faulty components. These include parts such as a faulty fuel pressure...

The vehicle will need to be pressure tested to see if the intake and/or head gaskets are leaking coolant. The thermostat and housing should be checked for leaks. If these checks are okay, then the thermostat should be checked for...

Hi there. If a strut is leaking, then the strut tower that contains the oil for the shock absorber has a seal that split or got damaged. When replacing the shocks or struts, it is recommend to replace them in...

Unfortunately, YourMechanic does not service motorcycles. However, when a vehicle of any kind is in a collision parts can bend or twist to such a small degree that it may not be noticeable to the eye. Even after having multiple...

Hey there. Thanks for writing in about your tailgate lock on the 2006 Ford F-150. If your tailgate uses a manual key-operated locking system, it's quite possible that your lock is stuck or frozen due to debris, gunk or other...

Hey there, thank you for asking about your 1999 Honda Civic. The computer will often times shut the compressor off as a safety default when there is not enough pressure in the system. This can also happen when there is...

If your vehicle has a valet switch, it should be located on the interior of the vehicle. This switch is often times hidden in the glove compartment somewhere. Whichever button you pressed to activate the valet feature is the same...

Hi Mason. Thanks for sending your question today. Most of the time, when this occurs, it's due to either the replacement injector not being correctly installed or perhaps a secondary or other injector was faulty as well - but not...

Try accelerating the engine in park. If the noise occurs then, when the car is not moving, generally the noise you are describing originates in the engine, the transmission (torque converter runs even at idle), and/or the accessory drives although...

Measure fuel pressure on the fuel rail on the engine. If the fuel pump turns on, that's hopeful but it doesn't mean there is actual pressure. Also, check for actual injector operation using a noid light. Is there an actual...