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Old 06-11-2010, 02:32 AM   #1
sassan
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Default 87 speedometer problems

I have a 87 supra n/a 5 speed. my problem is that my speedometer is all wacked out. wen driving it reads about 20 mph faster than im going. so it will say im doing 85 wen only doing 65. wat would cause this problem?
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Old 06-11-2010, 03:50 AM   #2
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Default Speedometer Problems

I saw a post on this just last night. Larger tires could change your speedometer readings. Usually people report that the speedometer bounces or just fails alltogether.
Is your car an automatic?
Check this out:
http://www.supras.com/06/techcenter/display.php?QID=29
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Old 06-11-2010, 03:58 AM   #3
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Has the rear end or the speedo been swaped out? Tires won't make that big of a difference, maybe a mile or two at most.
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Old 06-12-2010, 02:14 AM   #4
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not that i know of everything is still stock and still there
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Old 06-13-2010, 07:23 PM   #5
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Quote:
Originally Posted by sassan View Post
not that i know of everything is still stock and still there
the springs in your speedo are shot or your speedo gear has been swapped/ your rear gearing has been search the forum for "rear gear change" there is a table that says how fast you should be going at what rpm
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