HI,
It appears master cylinder is leaky- no fluid leaks, but pedal mysteriously drops while sitting at a light sometimes, slight release of foot pressure then press down and to the floor it goes.
I picked up a Chiltons book and this appears to be a PAIN to do. Apparently, the entire ABS assembly, including internal gears, need to be removed just to access the bolts to disconnect master cylinder. It does look like I could handle it but there are a few major problems:
The book says "The abs modulator pistons are normally in the home or top position. In this position, the modulator drive gears are under spring tension and will turn during disassembly if not unloaded. The sudden rotation of gears and release of tension could cause injury if done without extreme care. It is recommended that the pistons be run down and the tension released prior to removing the brake control assembly..."
Question 1) How do a "extreme care" OR am I expected to buy some $$$$ scan tool to program the pistons down?
Well, one question is enough for now. Thanks for any help,
Dave