My wife's 2000 V70 (42,000 miles) has a strange 'knocking' noise from the dash when the A/C is on. It almost sounds like there is a mouse inside the dash running around! It comes and goes (unable to duplicate it for the dealership) at random. I know it is electrical because the noise stops when the key is pulled (or the fan is manually turned off). It is loud enough to be heard while on the freeway.
Could it be a 'flapper' (diverter for the air) for the A/C system going out of control? Any other ideas?
Thanks in advance.
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