Quote:
Originally Posted by 911monty
I believe this is normal. Mine does the same thing. I can attempt to find if need be. I think it is explained in the owners or Bently manual. If I remember correctly SAI comes on after rich start up to kick off the cats then it does a system check at the next idle period.
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Correct.
The second time you hear the SAI, its running a pressure test to check the integrity of the system. If that test fails, it will run the test a few more times until eventually a CEL will be illuminated to let you know of a fault in the system.