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A comment on Neighbor's house alarm triggers when I put my car in reverse. Parent comment

Re:Neighbor's house alarm triggers when I put my car in reverse by to3m on Sunday December 17, 2017 @07:37PM (#15948552)
But the engine speed doesn't change until you lift the clutch. So if this were due to the RPM, putting it in reverse while stationary surely wouldn't do anything in particular.
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Re:Neighbor's house alarm triggers when I put my car in reverse by acranox on Monday December 25, 2017 @10:21AM (#16004395)
If it’s an automatic, putting into reverse will change the engine RPM.
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Re:Neighbor's house alarm triggers when I put my car in reverse by BoorishBears on Monday December 18, 2017 @11:08AM (#15952585)
Fuel mixture changes as the engine heats up, changing the sound
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