What will make my brake pedal rock hard after new booster?

[dpuckett]

While maneuvering my pickup around the other day for our pics at SOP3, I noticed my brake pedal was ROCK HARD, as if I had the key off. I thought, "Oh great, more parts I cant afford, but I have storng feet and legs, so I'll make it home, as it is 90% interstate". I got home, and replaced the booster after affirming I had sufficient vacuum (25inHg) at the hose. I even swapped a known good check valve just to be sure. Still hard. got new booster (Cardone reman; cant get Wagner or Bendix in this town). Pedal is still rock hard. What else can be causing this? I realize it is possible the reman is bad, but is there anything else?



I have relatively new (<6mo) front brake system from the hoses out, so I doubt that is the culprit, as this came on real sudden. I have done nothing to the rear- it is a 99 axle, with ~140K on what looks like original everything. Master sylinder leaks out the top gasket, and appears quite aged, possibly original.



Daniel

 

[PToombs]

Dude! I thought you didn't have any problems on the way home! It sounds like it's still a boost problem, the boost makes it easy to push. The dash or some thing didn't fall down behind the pedal did it? You should have said something at SOP, we could have checked it.

 

[dpuckett]

Check the simple stuff, dumbbas

It turned out the vacuum line to the cruise control had split in two. I took the "new" booster back, got my core, and reinstalled it, and is working like it should now. Could have saved myself a lot of trouble if I had taken the advice I give others about checking the simple stuff.



-DP

 

[PToombs]

See? I told ya so! :-laf Just remember, the mediocrity costs more there!