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87 toyota celica making hissing noise in the engine btwn 30-40mph?

It just happened today. When accelerating from 0-25 mph, it is normal, but after 30-35, there's a high pitch hissing noise coming from the engine. When I put my clutch in, the noise stops....can someone diagnose this - I'd like to take my car in but I don't know what kind of repairs I'm looking at...thanks!

2 Answers

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  • duster
    Lv 6
    1 decade ago
    Favorite Answer

    get the clutch assembly looked at soon, befor it gets expensive.

  • Anonymous
    1 decade ago

    hard to say without looking under hood but hissing noises could be from a vaccum leak check hoses for cracking or brittleness. rubber deteriorates over time may becomes porous.

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