Visual Inspection
WARNING: This page is about a different car, the 1988 Cadillac Allante and 1987 Cadillac Allante. However, it is still accessible from the selected car via links, so may be relevant.
Inspect all vacuum and electrical circuits for pinches, cuts and disconnections.
Be sure to inspect all hoses that are difficult to see beneath the upper intake manifold. Inspect all related wiring for disconnects, burned or chaffed spots, pinched wires, or contact with sharp edges or hot exhaust manifolds. This must be done carefully and thoroughly.