Acceleration/Full Throttle Enrichment & Deceleration Fuel Cutoff
- Ensure engine coolant temperature is at least 176°F (80°C). Connect scan tool to Data Link connector (DLC) located in center console, in front of shift lever.
- Start engine and allow it to idle. With scan tool in READ TEST VALUE BLOCK function, select group "04" and read value in field No. 4 of scan tool. Display value must be 00010 at idle.
- Using accelerator pedal, increase engine speed to 3000 RPM and observe scan tool. Display value in field No. 4 of scan tool must briefly be 10100. Release accelerator pedal and observe scan tool.
- Display value in field No. 4 of scan tool must briefly be 00011 then return to 00010 at idle. If values are not as specified, see THROTTLE POSITION (TP) SENSOR ADJUSTMENT in ADJUSTMENTS - 2.8L article. If values are as specified, select END OUTPUT function on scan tool.