Section 8 (Fuel System - General Diagnostics And Tests (Convertible))
WARNING: This page is about a different car, the 1998 Volvo C70. However, it is still accessible from the selected car via links, so may be relevant.
- Testing Fuel Injection System (B5234T3; B5254T; 1998)
- Checking fuel pressure and residual pressure
- Notes
- Choosing a method for taking a reading
- Checking vacuum hose to pressure regulator
- Checking hose and connection
- Connect pressure gauge
- Starting fuel pump (FP)
- Measuring line pressure
- Line pressure too high
- Replacing pressure regulator
- Checking for blockage
- Line pressure too low
- Checking fuel filter
- Replacing fuel filter
- Checking pressure regulator, pressure reduction
- Checking pressure regulator, pressure increase
- Checking residual pressure
- Replacing component
- Disconnecting pressure gauge
- Stop fuel pump (FP)
- Stop fuel pump
- Start fuel pump
- Information
- Pressure regulator, replacement
- Taking fuel pressure readings while driving the car
- Checking fuel pump (FP) relay
- Fuel pump (FP)
- Starting fuel pump (FP)
- Checking fuel pump (FP) relay ground lead
- Fault-tracing information
- Checking the fuel pump relay ground connector
- Checking for open-circuit
- Checking signal cable voltage
- Checking for short-circuit
- Checking signal cable resistance to ground
- Checking signal cable resistance
- Checking connector
- Checking for contact resistance and oxidation
- Replacing fuel pump (FP) relay
- Connecting breakout box (connector B)
- Verification
- Information
- Checking the fuel pump (FP)
- Checking fuel pressure and residual pressure