Sensors serve a variety of functions for the engine, transmission and other critical systems.

While sensors do not require maintenance, a sensor operating outside its normal range for long enough will often cause the CHECK ENGINE LIGHT indicator on the dashboard to light. If the CHECK ENGINE LIGHT appears, have its cause checked out as soon as you can. The trained technicians at AAMCO Centers can help you pinpoint the cause of the malfunction triggering the light.

The ignition system typically includes spark plugs, ignition wires, the distributor and several other components.

Spark plugs in today's vehicles are typically replaced anywhere between every 30,000 miles and 100,000 miles, depending on the vehicle and type of spark plugs. Please refer to your owner's manual for factory recommended maintenance intervals for your specific vehicle.

Trouble with the ignition system is typically signified by an engine that surges, runs rough, stalls or gets abnormally poor gas mileage. Another indication is the CHECK ENGINE LIGHT indicator on the dashboard lights. If the CHECK ENGINE LIGHT illuminates, have its cause checked out as soon as you can. The trained technicians at AAMCO Centers can help you pinpoint the cause of the malfunction triggering the light.

Your vehicle's engine valves allow the engine to "breathe", pulling a mixture of air and fuel into the cylinders and pushing out exhaust.

Regular maintenance will keep the valve train running properly. This maintenance includes:

• Regular oil and filter changes.
• Proper maintenance of the cooling system.
• Replacement of the timing belt (if so equipped).
• Use of the proper grade of fuel. Check your owner's manual for the proper fuel grade for your vehicle.

AAMCO Centers can assist you with the appropriate maintenance schedules and can perform the proper maintenance for your vehicle.