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144 Posts
Discussion Starter · #1 ·
while waiting at a long stop light, i noticed the sound of something turning on and off, at a rate of a few cycles a minute or so. meaning i'd hear for about 10-15 seconds then it would stop for a bit and then do it again. kinda the same sound as the a/c unit, but it cycled on and off. the hvac was turned off altogether.
i didn't notice any difference in engine rpm. once i was paying attention, it continued to do so when i was in motion as well.

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