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.
1990 Audi 200 Base, AutomaticFACTORY OEM SERVICE PROCEDURE
Residual Pressure
- This procedure is only required for hot start problems. Connect Fuel Pressure Tester (VW 1318) as previously described in FUEL SYSTEM PRESSURE. See Figure . Open fuel pressure tester valve. Using Remote Control (US 4480/3), as previously connected in step 2) of FUEL SYSTEM PRESSURE, energize fuel pump for 5 seconds. Note fuel pressure drop over time period. Fuel pressure should not drop more than 2 psi in 10 minutes.
- If fuel pressure drop is greater than 2 psi in 10 minutes, inspect fuel pump check valve, airflow sensor plate free play, and sealing rings on fuel distributor and fuel lines.
Factory Service Tools
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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.