jumping speedometer - GM Forum - Buick, Cadillac, Chev, Olds, GMC & Pontiac chat


1992-1999 Series I L27 (1992-1994 SE,SLE, SSE) & Series II L36 (1995-1999 SE, SSE, SLE) and common problems for the Series I and II L67 (all supercharged models 92-99) Including Olds 88's, Olds LSS's and Buick Lesabres Please use General Chat for non-mechanical issues, and Performance and Brainstorming for improvements.

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Old 07-18-2005, 08:44 PM   #1
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Default jumping speedometer

my speedometer keeps going back and forth is therer a sensor that fix this problem and where is it located thanks.
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Old 07-18-2005, 09:05 PM   #2
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when does the car do this? hills acceleration? we need more info?
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Old 07-18-2005, 09:10 PM   #3
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it does it all the time
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Old 07-18-2005, 09:38 PM   #4
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The problem lies with your right foot moving up and down. If you can keep it steady I think it will fix your problem...


On topic... if it is like the oil pressure guage, it might be a bad board within the cluster. Not sure if that one can get swapped out though like the others.
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Old 07-18-2005, 10:38 PM   #5
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Quote:
Originally Posted by JimmyFloyd
The problem lies with your right foot moving up and down. If you can keep it steady I think it will fix your problem...


On topic... if it is like the oil pressure guage, it might be a bad board within the cluster. Not sure if that one can get swapped out though like the others.
The speedo is part of the main board and not easily swapped out. Has anyone else had speedo problems?
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Old 07-18-2005, 10:41 PM   #6
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Quote:
Originally Posted by BillBost37
Quote:
Originally Posted by JimmyFloyd
The problem lies with your right foot moving up and down. If you can keep it steady I think it will fix your problem...


On topic... if it is like the oil pressure guage, it might be a bad board within the cluster. Not sure if that one can get swapped out though like the others.
The speedo is part of the main board and not easily swapped out. Has anyone else had speedo problems?
I had them on an 92 Cutlass Ciera. It had the 3300, N-body. It would only happen when driving through heavy snow, though. Never did figure it out, but it would behave exactly how he described....would just randomly sweep from min to max.
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Old 07-18-2005, 10:57 PM   #7
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Quote:
Originally Posted by BillBost37
Quote:
Originally Posted by JimmyFloyd
The problem lies with your right foot moving up and down. If you can keep it steady I think it will fix your problem...


On topic... if it is like the oil pressure guage, it might be a bad board within the cluster. Not sure if that one can get swapped out though like the others.
The speedo is part of the main board and not easily swapped out. Has anyone else had speedo problems?
it might be a cluster problem also
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Old 07-18-2005, 10:59 PM   #8
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In my case, on the n-body, I always figured it was the speed sensor getting packed with snow.
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Old 07-19-2005, 12:54 AM   #9
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I'll venture speed sensor as well.
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Old 07-19-2005, 02:07 AM   #10
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Yeah... now that that is mentioned, it would make sense for that to be jumping if it was the speed sensor. But I wouldn't discount the Cluster theory completely.
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