Safety Warning
DIY auto repair can cause serious injury, fire, or vehicle damage. These guides are for informational purposes only. Always follow OEM torque specs, wear PPE, and consult a certified mechanic if you are unsure. You are solely responsible for your safety.
1987 Volkswagen Vanagon Base, AWDFACTORY OEM SERVICE PROCEDURE
Deceleration Fuel Shutoff
- Operate engine to normal operating temperature of 176°F (80°C). Fuel shutoff will operate in these conditions; when engine RPM was above 2600, throttle is closed, coolant temperature is above 122°F (50°C) and engine RPM is between 1250 and 2600 RPM.
- Locate double sided connector. Using Adapter (VW 1490 ), jump proper side of connector. See Fig 1 . Slightly accelerate engine. Note engine RPM.
- Engine RPM should surge then decelerate when shutoff operates. If engine RPM does not surge, check for damaged wiring, defective engine temperature sender or defective control unit.
Factory Service Tools
Use the Manual With the Right Hardware
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When to See a Mechanic
Stop DIY work and contact a certified mechanic immediately if any of the following apply:
- • You smell fuel, burning insulation, or see smoke.
- • Brakes feel soft, pull hard to one side, or make grinding noises.
- • The engine overheats, stalls repeatedly, or misfires under load.
- • You are missing required tools, torque specs, or safe lifting equipment.
- • You are not confident in the next step or safety outcome.