The answer posted previously seems to be taken verbatim from this site, and probably copyrighted there:
Mazda EGR Flow: Low or Excessive?
http://www.asashop.org/autoinc/sept2002/techtips.cfm
and if that doesn't work, there are additional tips here:
P0402 EGR code Help - Automotive Message Forums
http://www.automotivehelper.com/topic478910.htm
The power brake booster of a vehicle is replaced by removing the fluid reservoir, unbolting the booster from the firewall, and disconnecting it from the brake pedal. A new booster can then be connected and bolted into place.
The power brake booster on a 95 Chevy Blazer is replaced by draining and removing the master cylinder, unbolting the booster, and removing it from the vehicle. A new cylinder is then put in its place and bolted on.
The Brake booster needs replaced
Replace the power steering pump.
Sounds like it could be a problem with the vacuum booster or vacuum supply to the booster Check for a vacuum leak Make sure the check valve on the booster is working Check the vacuum canister
It is the same thing as the power steering pump - front of engine, left (driver's) side, driven by a single belt. It provides hydraulic pressure for the power steering, and for the power brake booster. Some Eldorados have had the hydraulic booster changed out and replaced with a vacuum booster; this is not factory setup.
I would say a power brake booster or a brake booster would be the same.
booster shuster as in Wayne and Shuster Wooster as in Wooster and Jeeves and when you assist her booster be careful not to goose her. booster booster
You have to be (4.5) to not have a booster
booster?
a booster is the first stage in a rocket
Tagalog translation of BOOSTER: nagpalakas