Car Starting Problems
Honda Prelude
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Honda Prelude SI

What causes a surging idle in a 1988 Honda Prelude?

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2005-09-26 21:44:43
2005-09-26 21:44:43

This is from experience. There is a rubber "S" shaped vacuum tube about 8 inches long under the intake manifold close to the firewall. It cracks over time and causes a vacuum leak that will drive you crazy, (rough idle, dies at lights, runs perfect above idle). Most mechanics seem to miss that one somehow. Very difficult to replace. Need very small hands. 4MRMIKE

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