[W126 Coupe] Engine vacuum oddity

[Jim Ham]

Do you suppose that cabin pressure has something to do with this? Why don't 
you try it with a window open to see if it still happens.

Regards,

Jim Ham

At 03:53 PM 7/20/2006, you wrote:
>Any idea on this one? When I turn the fan blower to high (i.e. EC is on, 
>fan is on low, then I hit the fan speed to high), the economy guage dips 
>when I'm at idle (i.e. I'm idling in D with my foot on the brake and the 
>economy guage goes off pegged just because I raised the fan speed). Any 
>idea how the two might be connected?
>Thanks,
>Richard
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