Journal-News

Wheels: Damon in Florida writes by e-mail, "I have a 1998 Ford F-150 pickup truck that I seldom drive and is in excellent condition except that the check engine light is on. A friend checked out the truck by plugging a scan tool into the connector under the dash. The retrieved code was P0101. Any ideas as what can cause this code? Thanks."

Halderman: The diagnostic trouble code (DTC) indicates a problem with the mass air flow (MAF) sensor or air intake system. Ask a service technician to check for faults in the air intake system, such as a torn inlet hose or clogged air filter. If everything checks out, the most likely cause is a defective MAF sensor. It can be checked by using a digital meter or scan tool. If the MAF sensor is found to be defective, it usually requires replacement.

Wheels: It is almost officially winter. What are your suggested vehicle services that should be done at this time of year?

Halderman: If you are storing a vehicle over the winter, there are several systems that should be prepared so that the vehicle survives being stored including:

• The fuel system — Start by adding a fuel stabilizer, such as Sta-bil to a fresh tank of fuel.

• Be sure that the fuel tank is full to help reduce condensation that can occur inside a fuel tank if the fuel level is low.

• The lubrication system — Change the oil and oil filter before storing the vehicle.

• Tires — If storing for several months, simply inflating the tires to the maximum pressure shown on the sidewall will help prevent flat spotting. If the vehicle is being stored for longer than a few months, it would be best to place the vehicle on safety stands with the tires off the ground.

The following should be check for the winter months ahead:

• Tires

• Windshield wiper blades

• Battery

• Accessory belts and cooling/heater hoses.

Waxing a vehicle now will also help protect the finish from salt damage.

James D. Halderman is an ASE-certified master technician, a member of the Society of Automotive Engineers and the author of 12 textbooks. Submit your automotive care questions to Halderman via e-mail at jhalderman2@juno.com.