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Old 03-18-2017, 05:06 PM
Motor Head Motor Head is offline
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Join Date: Jul 2002
Location: Ojai, Ca.
Posts: 88
Here is an update for those interested in SBC issues. I did some research and learned that the pedal is directly connected to a master cylinder and reservoir called the Brake Operation Unit (BOU). It is also were the reservoir for the system is as well as the sensor that tells the SBC how the driver is operating the brake pedal.
Two electro-hydraulic switches isolate the master cylinder from applying actual pressure to the brakes unless a system failure is experienced. Then you only get pedal pressure routed to the front disks from tandem pistons in the master cylinder so you can make it safely to a repair facility.
There is as third piston in the master cylinder portion of the BOU and it is their to simulate the feel of a normal brake pedal. During the procedure to bleed and check the SBC system for air, the STARTEK system asks the technician "if the pedal has soft resistance".
Needless to say I took duxthe1's advice and went back to the dealer. We had a very interesting discussion and the car is there now where it is getting a complete SBC diagnostic check. I'll report out again when I get the result from their findings.
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