Vacuum leak detection.

In this article I’ll cover the general things that apply to all Fiero versions, then later I’ll break out the version specific and detail items. Contrary to popular belief, vacuum plumbing problems are a major issue. Even small vacuum leaks can cause major headaches.

A major problem? Why?

The ECM will try to compensate . . . → Read More: Vacuum leak detection.


700 Series TBI

The TBI used for 87-88 Fiero 4 cylinder motors is the 700 series unit presently manufactured by Delphi Automotive for GM. You can find Delphi’s public relations info for the 700 TBI here. The information includes images and general specification data. The articles that we’re interested in at the moment are “Throttle Bodies – . . . → Read More: 700 Series TBI