Is this normal? - GM Forum - Buick, Cadillac, Chev, Olds, GMC & Pontiac chat

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Old 04-22-2008, 04:24 PM   #1
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Default Is this normal?

Engine on, parked and idling.

Roll up all windows front and rear at the same time headlights dim and RPMs shoot up to about 1500-2500 RPMs within around that range, that normal?
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Old 04-22-2008, 09:01 PM   #2
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iv never had the RPMs shoot that high

but i have had that happen on my old monte carlo before
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