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Speedometer going up from revving engine???

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Old Jul 15, 2003 | 09:41 PM
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Speedometer going up from revving engine???
I noticed when I revved at my friends car today that the speedometer shot up to 20mph or so? What the hell is with that? Id love to know
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Old Jul 15, 2003 | 10:01 PM
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mine does that too...
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Old Jul 15, 2003 | 11:57 PM
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this doesnt exactly seem normal..... ttt
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Old Jul 16, 2003 | 12:02 AM
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I asked the same thing a few years ago. Everyone said their cars do it, some more than others. I wouldnt worry about it.
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Old Jul 16, 2003 | 12:03 AM
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That really shouldnt happen. You arent going anywhere so its natural that the speedo stays at 0 or at least logical. Mine doesnt do it but I'm kind of interested in why this happens.
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Old Jul 16, 2003 | 12:07 AM
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Originally posted by CamaroBoy96Z28
That really shouldnt happen. You arent going anywhere so its natural that the speedo stays at 0 or at least logical. Mine doesnt do it but I'm kind of interested in why this happens.
I am also interested in why it happens. Can anyone elaborate?
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Old Jul 16, 2003 | 12:28 PM
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ttt
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Old Jul 16, 2003 | 03:19 PM
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I always thought that was strange also. Mine never jumped to 20mph though maybe 5mph.

Could have alot to do with how the needle(s) move (windings,magnet,?) and their distance from each other.
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Old Jul 16, 2003 | 03:23 PM
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The vehicle speed data is relayed from the Transmission to the Cluster via speedo cable in the tranny. Only logical answer is the neutral reving is causing your speedometer gear to spin.
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Old Jul 16, 2003 | 03:28 PM
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mine doesn't do it at all.
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Old Jul 16, 2003 | 04:24 PM
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can anyone tell me why this is happening?
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Old Jul 16, 2003 | 04:40 PM
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Originally posted by quicksilver97ta
I always thought that was strange also. Mine never jumped to 20mph though maybe 5mph.

Could have alot to do with how the needle(s) move (windings,magnet,?) and their distance from each other.
I think this is about the best explanation of what it can be...
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Old Jul 16, 2003 | 06:01 PM
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is the car stick or auto? i would think that its some sort of problem w/ the trans or the clutch if its stick.. just my .02
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