HF8 - Check For Obvious Restrictions In the Exhaust System

*** THIS ARTICLE REFLECTS CHANGES MADE BY TSB # 9326B7, December 1993

- Inspect the following for dents, areas of collapsed material and unusual bending:
- Front exhaust pipe.
- Rear exhaust pipe.
- Muffler/tail-pipe assembly.

- Are the above components free of dents and areas of collapsed material or unusual bending, etc.?

YES -- GO to HF9. HF9 - Check Vacuum For Indication of Exhaust Restriction

NO -- REPLACE/REPAIR the restricted component(s) as necessary. COMPLETE the PCM reset to clear all DTCs. Clearing Diagnostic Trouble Codes

Rerun quick test. Diagnostic Subroutines (DSR) - Extracting Codes