Pinpoint Test D: THE PEDAL FEELS SPONGY
WARNING: This page is about a different car, the 2011 Jaguar XKR, 2011 Jaguar XK, 2010 Jaguar XKR, and 2010 Jaguar XK. However, it is still accessible from the selected car via links, so may be relevant.
- CHECK FOR SPONGY PEDAL (ENGINE OFF)
- Check for a firm brake pedal.
Is the brake pedal effort and brake pedal travel normal?
YES: Vehicle is OK.
NO: Go to step 2.
- CHECK BRAKE PEDAL RESERVE (ENGINE OFF)
- Pump the brake pedal 10 times and hold on the final application.
Does the brake pedal feel firm on final application?
YES: Go to step 3.
NO: BLEED the brake system. See Brake System Bleeding .
- CHECK BRAKE PEDAL RESERVE (ENGINE ON)
- Engine is idle.
- Apply the brake pedal lightly three or four times.
- Wait 15 seconds for the vacuum to recover.
- Push down on the brake pedal until it stops moving downward or an increased resistance to the brake pedal travel occurs.
- Hold the brake pedal in the applied position while increasing the engine speed to 2000 revs/min.
- Release the accelerator pedal.
Does the brake pedal move downward as the engine speed returns to idle?
YES: Go to step 4.
NO: CHECK the vacuum to brake booster.
- CHECK BRAKE FLUID LEVEL
- Check the brake master cylinder reservoir fluid level.
Is the fluid level OK?
YES: BLEED the brake system. See Brake System Bleeding . TEST the system for normal operation.
NO: CHECK for leaking brake system and RECTIFY as necessary. ADD fluid and BLEED the brake system. See Brake System Bleeding . TEST the system for normal operation. REPEAT road test if necessary.