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1990 Toyota Cressida RPM up and down at idle, what is the cause? Assest with code 11

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1990 Toyota Cressida RPM up and down at idle, what is the cause? Asset with code 11

Vehicle: 1990 Toyota Cressida

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Most likely it is an intake leak, check the hoses and gaskets for cracks or damage. You might be able to hear a whistling sound.

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