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Home >> Chevrolet >> 2001 >> Camaro Base, 2D Convertible, Automatic >> Repair and Diagnosis >> Engine Performance >> Testing & Diagnosis >> Engine Control System Self-Diagnostics - 3.8L >> Diagnostic Tests >> DTC P0507: Idle Speed High >> Diagnostic Procedures

Diagnostic Procedures

  1. If powertrain diagnostic system check was performed, go to next step. If powertrain diagnostic system check was not performed, go to POWERTRAIN DIAGNOSTIC SYSTEM CHECK  under DIAGNOSTIC SYSTEM CHECKS. After performing powertrain diagnostic system check, go to next step.
  2. Start engine. Using scan tool, command engine speed up to 1500 RPM, down to 500 RPM, and then up to 1500 RPM. Exit from test. If engine speed change responded to within 100 RPM of each command, see DIAGNOSTIC AIDS . If engine speed does not respond as commanded, go to next step.
  3. If engine speed is more than 100 RPM more than desired engine speed, go to next step. If engine speed is not as specified, go to step  5.
  4. Check for vacuum leaks or faulty PCV valve. Repair as necessary. After repairs, go to step  6.
  5. Check for excessive deposits in throttle body. Check for parasitic load on engine (i.e., transmission problem). Repair as necessary. After repairs, go to next step.
  6. Using scan tool, clear DTCs. Start and warm engine to normal operating temperature. Select DTC, SPECIFIC, then enter this DTC. Operate vehicle within conditions for setting this DTC. If scan tool indicates that this test ran and passed, go to next step. If scan tool does not indicate that this test ran and passed, go to  2.
  7. Using scan tool, select CAPTURE INFO, REVIEW INFO function. If any undiagnosed DTCs are displayed, go to applicable DTC test. See DIAGNOSTIC TROUBLE CODE DEFINITIONS . If no undiagnosed DTCs are displayed, system is okay.
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