Deceleration Fuel Shut-Off
Checking Deceleration Fuel Shut-Off
Requirement
Engine oil temperature minimum 80°C
Fuel shut-off will occur only when:
Throttle is closed
Coolant temperature is above 50°C (122°F)
Engine speed is above 1250 RPM
Engine speed was above 2600 RPM
- Bridge connections in connector 2 with square side of double adapter VW 1490 and give slight amount of gas
Engine RPM must vary (surge, then deceleration fuel shut-off begins)
If Not check for:
Break in wiring
Temperature sender for engine temperature defective
Control unit defective