Mike's Workshop Manuals: Service manuals for every vehicle
Home >> Oldsmobile >> 1988 >> Custom Cruiser >> Repair and Diagnosis >> External Pages >> Different car >> Section 11 (DFI ECM Tests W/Codes) >> ECM Code EO63 - Vehicle Speed/Set Speed Difference Too High >> DFI ECM Tests W/Codes >> Notes On Intermittents

Notes On Intermittents

WARNING: This page is about a different car, the 1988 Cadillac Seville and 1988 Cadillac Eldorado. However, it is still accessible from the selected car via links, so may be relevant.

If code EO63 is setting intermittently make sure owner is not overrunning set speed in excess of 20 MPH. Check vacuum source and brake release vacuum lines for proper connections and/or leaks.

Fig 1: Schematic, Code EO63, Vehicle Speed/Set Speed Difference To High
G57364
Fig 2: Flow Chart, Code EO63, Vehicle Speed/Set Speed Difference To High
G57366
Fig 3: Flow Chart, Code EO63, Vehicle Speed/Set Speed Difference To High
GB0048551
scientia non olet · About Mike's Workshop Manuals