Quote:
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Originally Posted by RickS
I recall reading somewhere this 2 sec whining on cold starts is normal because the cats aren't warmed up and if you don't hear it the pump may not be operating correctly.
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The air pump runs for more like 2
minutes not 2
seconds on a cold start. If you're hearing a 2 second noise, that's not the air pump, at least not if it's functioning as intended.