Question about 1990 Toyota Corolla
RPM goes up every time i hit the break.
Look for a valve in the hose connected from the brake master's hydrovac going to your engine's intake manifold . check if it is still working, the valve traps the vacuum from your manifold to the hydrovac. Replace valve if air passes it on both sides.
Posted on Nov 20, 2008
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Posted on Jan 02, 2017
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