Computerized Engine Control System

The CEC system should be considered a source of trouble for engine performance, fuel economy and exhaust emission complaints ONLY after normal tests that would apply to a vehicle not equipped with the system have been performed.

Before performing any diagnostic test, other engine associated components and systems that can affect air/fuel mixture, combustion efficiency or exhaust gas composition should be tested for malfunctions.These include:

• Basic carburetor adjustments
• Mechanical engine operation (i.e., spark plugs, valves and rings)
• Ignition system
• Loose vacuum hoses and fittings