Question about 1994 Chevrolet Astro
This is a hydra boost system and recieves boost from the power steering pump. If you flow rate is low on the pump chances are the pump is going bad.
Posted on Sep 18, 2008
I ran into the same difficulty and found myself looking in the same places. With rare exception, if the master cylinder and booster are not leaking, look else ware. Aged front disk calipers caused my difficulty. They can bind due to the daily heat generated from breaking. My wife is either on the gas or the breaks and I'm always battling warped rotors, cooked shoes, and the constant drone "the breaks are funny". A good check is to push the pistons back into the caliper casting. If you feel you're forcing them, they should be replaced. Calipers deteriorate and are not a lifetime item. I got my last set from Advanced Auto for $15 each w/ lifetime guarantee (rebuilt). Two bolts, carefully disconnect the break line and don't over tighten, get a helpful son or good friend with a six-pack to push the petal for bleeding and you should be good to go.
Posted on Oct 07, 2008
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