Power Brake Filter

Older models of Fiero have a filter in the booster vacuum line. If the filter is blocked it will cause problems with the brake booster. This filter, or an equivalent to it, can be found in the MotorMite Master Catalog. It may even be on the shelf in some stores.

The filter serves 2 purposes. It will prevent crap from being sucked down the line into the engine. (Especially if the line is unplugged from the booster with the engine running.) It also prevents engine dirt getting to the booster.

Is the Filter needed? Some people would say no. If you have one you should probably replace it every couple years. If you don’t have one, I’d consider adding it. The filter is cheap. It’s easy if a bit awkward to install. You just cut the rubber line, insert the filter, and clamp the line. The purpose of the filter is to keep crud sucked in thru the booster and loose rust inside the steel line vacuum line from reaching your engine. It’s not to protect the booster. If you install one, make sure it won’t melt.