Visual UNDERHOOD Inspection
WARNING: This page is about a different car, the 1990 Cadillac Allante. However, it is still accessible from the selected car via links, so may be relevant.
One of the most important checks is a visual underhood inspection. This can often fix a problem. Inspect all vacuum hoses for pinches, cuts, or disconnects. Inspect all the wires in the engine compartment for good connections, burned or chaffed spots, pinched wires, or contact with sharp edges or hot exhaust manifolds. These quick tests take only a few minutes, can save you valuable time, and help you repair the problem.