Engine start up clatter...
Joined: Jun 2002
Posts: 42,317
Likes: 47
From: Central Massachusetts
Originally posted by ohiodean
i dont recall hearing mine do that but every once and a while when it is sitting still this noise comes on and it sounds like a jet engine, i think its normal but its weird, its actually sort of loud to people ask whats under there a whistle?
i dont recall hearing mine do that but every once and a while when it is sitting still this noise comes on and it sounds like a jet engine, i think its normal but its weird, its actually sort of loud to people ask whats under there a whistle?
I think you're hearing the air pump which comes in to light up your catalytic converter. I think the principle behind it is to just inject air into your exhaust flow to make it hotter a get the cat online quicker. It sounds a little "jet" like... Not clatter like these other folks are talking about. Just FYI.
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