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What causes a '97 Lexus LX450 SUV to make loud hissing noises when you press on the gas pedal then it slowly accelerates?
Wiki User
Answered 2004-10-16 07:18:45
check for a vacume leak on the engine IF the Car has very little POWER & hisses - IT sounds like a Blocked Catalitic Converter- OR even the Muffler could be blocked-SOMETIMES if there is a DOUBLE WALLED exhaust pipe the inside pipe can colapse & cause a restriction.
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