Diagnostic Aids

Inspect for the following conditions:

• Restrictions in the MAP sensor vacuum source.
• A missing or damaged MAP sensor seal.
• Vacuum hoses that are disconnected, damaged, or incorrectly routed.
• Any intake manifold vacuum leaks.
• Any vacuum leaks at the throttle body.

If the condition is intermittent, see INTERMITTENT CONDITIONS  under SELF-DIAGNOSTIC SYSTEM.