2001 Audi TT SAI insufficient air flow

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tbedard

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Im getting a the SAI insufficient air flow code.

I have run the proper tests in vcds to verify the pump, relay, and combi valve solenoid work. So it down to actual flow, is there a was to view the SAI pump flow rate during a cold start when its running, and what flow rate is required to not fault out?

My plan is to see if im getting enough vac on the combi valve to ensure its fully open, then see if the pump itself might be leaking because of bad rivets or the tube going from the pump to the combi valve having some sort of leak.

Thanks!
 
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