Miscellaneous Component Or System Checks

Check the following:

• Check Mass Air Flow (MAF) sensor input to PCM. Go to TEST DC, step 25)  under SYSTEM TESTS in SELF-DIAGNOSTICS - EEC-V - GASOLINE & NGV article.
• Check engine mechanical condition. Check compression, camshaft, valve train components, etc. and repair as necessary. Check engine oil quality. See appropriate article in ENGINES.
• Check fuel delivery system. Go to TEST HB, step 1)  (Natural Gas models), or go to TEST HC, step 1)  (all others) under SYSTEM TESTS in SELF-DIAGNOSTICS - EEC-V - GASOLINE & NGV article.
• Check secondary ignition system. Go to TEST JB, step 1)  under SYSTEM TESTS in SELF-DIAGNOSTICS - EEC-V - GASOLINE & NGV article.
• Check PCV system. Go to TEST HG, step 1)  under SYSTEM TESTS in SELF-DIAGNOSTICS - EEC-V - GASOLINE & NGV article.