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3-Series (E21, E30) Chat relating to the BMW 3-Series from 1975-1983 and 1984-1991 line. Specific models: BMW 315, BMW 316, BMW 318, BMW 318i, BMW 320/4, BMW 320i, BMW 320/6, BMW 323i, BMW 320i. E30 Family models include: BMW 325e, BMW 325i, BMW 325is, BMW 325ix.

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Old 06-20-2008, 09:45 AM   #1 (permalink)
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Speedo problems

Just recently got an 83 320i that has a few issues. Anybody have any idea why the speedometer would oscillate above and below your correct speed until we hit about 45-50, then it settles down and is fairly accurate?

We bought the car for my son to run around in but he's freaked out by not knowing how fast he's going....

Thanks
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Old 06-20-2008, 10:19 AM   #2 (permalink)
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your speedo cable is binding at lower speeds... typical in older cars.

you can try to disconnect it and patiently spray the element with WD40 or other lubricant; or replace your cable.
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Old 06-20-2008, 01:01 PM   #3 (permalink)
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Speedo problems

Thanks for the quick response! I kinda figured it would be the cables - which 1 is more likely, upper or lower or should I just replace both?
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Old 06-20-2008, 01:11 PM   #4 (permalink)
OMFG another one!?
 
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Likely best to just replace both.
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