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Old 10-11-2011
04x4ranger's Avatar
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Hissing sound?

Its been makeing this strange hissing sound only at idle when the engine is warm. Then if i give it a few hard revs it clears and stops for a little. It sounds like its comeing from the solenoid valve. Is it cloging up and needs to be replaced? Any help will be appreciateed.
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Old 10-11-2011
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Your Vapor canister you pointed out the other day would not make a noise. It runs around 1psi or less. Also if it was leaking it would throw a CEL P0457. Check all vacuum lines
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