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Speedometer inaccurate?


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The speedometer on my Ram is only accurate for any speed under 30MPH. After that, it lags behind and at ...


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Old 12-24-2016, 10:33 PM   #1 (permalink)
 
therammy's Avatar
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Ram Year: 1995
Engine: 5.2L Magnum
Question Speedometer inaccurate?
The speedometer on my Ram is only accurate for any speed under 30MPH. After that, it lags behind and at around 70MPH it shows I'm going around 45MPH.


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therammy is offline   Reply With Quote
Old 12-26-2016, 12:59 PM   #2 (permalink)
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Ram Year: 2001 1500 Sport with 3/4 ton spring pack
Engine: Magnum 360
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Run a cluster self test.

Ignition off, hold down the trip reset button.
While holding button turn ignition to run.
Wait until odometer shows 'check'.
Release trip reset switch and watch cluster for about 1 minute. All LCD digits will test followed by all gauges performing a full sweep in three increments.
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