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tach only works when cold

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Old 05-29-10, 09:11 PM
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rodsc400
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Unhappy tach only works when cold

i own a 92 sc400, tach only works when cold as soon as car warms up the tach drops and only bounces a little.
Old 05-30-10, 06:28 AM
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rsos1
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my tach quit working yesterday along with the speedo. Then the speedo started working but the tachs still now working.
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