Speedometer reads at 1/3 of actual speed
02-05-2015, 02:38 PM
#1
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Speedometer reads at 1/3 of actual speed Hey guys, strange problem:
2002 camaro z28 6speed
I think the calibration of my speedometer somehow was reset. I currently have 4.10 gears in my car - the speedometer was previously accurate (post gear change) but has since reset and now runs to a 1/3 of my actual speed. This problem is very annoying and I would appreciate information on how to re-tune the speedo. Multiple mechanics have tried and failed to fix it.
2002 camaro z28 6speed
I think the calibration of my speedometer somehow was reset. I currently have 4.10 gears in my car - the speedometer was previously accurate (post gear change) but has since reset and now runs to a 1/3 of my actual speed. This problem is very annoying and I would appreciate information on how to re-tune the speedo. Multiple mechanics have tried and failed to fix it.
02-05-2015, 03:37 PM
#2
per your post,the speedo was indicating correct mph after gear change and computer changed to correct for the 4.10s',then all of a sudden mph indication is 1/3 of what it should be ?
has the speed sensor on the tranny tailshaft been changed to check to see if it's the problem ?
has the speed sensor on the tranny tailshaft been changed to check to see if it's the problem ?
02-05-2015, 03:49 PM
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per your post,the speedo was indicating correct mph after gear change and computer changed to correct for the 4.10s',then all of a sudden mph indication is 1/3 of what it should be ?
has the speed sensor on the tranny tailshaft been changed to check to see if it's the problem ?
has the speed sensor on the tranny tailshaft been changed to check to see if it's the problem ?
02-06-2015, 11:14 PM
#4
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I would start by connecting an OBD scanner with a live readout and see if the PCM is seeing the proper speed to see whether it's the gauge or something on the computer side.
02-12-2015, 01:32 PM
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I'd really appreciate anyone's input on this issue as I will be traveling overseas soon and need to have my car in a sell-able condition.