DIAGNOSIS AND TESTING - HYDRAULIC BOOSTER
The hydraulic booster uses hydraulic pressure from the power steering pump. Before diagnosing a booster problem, first verify the power steering pump is operating properly. Perform the following checks.
•Check the power steering fluid level.
•Check the brake fluid level.
•Check all power steering hoses and lines for leaks and restrictions.
•Check power steering pump pressure.
The hydraulic booster unit will produce certain characteristic booster noises. The noises may occur when the brake pedal is used in a manner not associated with normal braking or driving habits.
A hissing noise may be noticed when above normal brake pedal pressure is applied, 40 lbs. or above. The noise will be more noticeable if the vehicle is not moving. The noise will increase with the brake pedal pressure and an increase of system operating temperature.
A clunk-chatter-clicking may be noticed when the brake pedal is released quickly, after above normal brake pedal pressure is applied 50 - 100 lbs. .
BOOSTER FUNCTION TEST
With the engine off depress the brake pedal several times to discharge the accumulator. Then depress the brake pedal using 40 lbs. of force and start the engine. The brake pedal should fall and then push back against your foot. This indicates the booster is operating properly.
1.Start the engine, apply the brakes and turn the steering wheel from lock to lock. This will ensure the accumulator is charged. Turn off the engine and let the vehicle sit for one hour. After one hour there should be at least two power assisted brake application with the engine off. If the system does not retain a charge the booster must be replaced.
2.With the engine off depress the brake pedal several times to discharge the accumulator. Grasp the accumulator and see if it wobbles or turns. If it does the accumulator has lost a gas charge and the booster must be replaced.
I'm gonna try the above right now and see if I have any of the symptoms.
...Quickly mash, let up, mash again several times very quickly and see if point where pedal stops rises. If it does ride, then two things come to mind: ...
This confuses me a little bit. Pump the pedal down a few times and see after how many times it stops returning???
I'll try unplugging the ABS too, if it clears up the problem does that mean the ABS unit is bad?
I just remembered that I have the manual too, so I'll try some troubleshooting from there as well.
Thank you for the replies, keep 'em comin, and I'll keep y'all updated...