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Bad Tach Or Bad Sensor ?? 700

posted by  Lummer57 on  Thu Feb 21 11:00 CST 2008
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last visit: Thu Oct 28 03:22 CST 2010
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1988 740GLE wagon auto AW70L tranny.. Tachometer rpm's reading too high. For example : 1250 rpm at idle and 3000 rpm at 50 mph. So how do I know if the tachometer is bad and should be replaced or if the sending sensor is bad and needs replacement ? I took off cluster and removed tach. It looked fine. I made sure all connections were solid when putting back together. Where is the sending sensor ? Hard job to replace ? Thanks.
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' 88 740GLE auto wagon nearly 167,000 and ' 87 240DL auto sedan nearly 125,000






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New Bad Tach Or Bad Sensor ?? [700]
posted by  Lummer57  on Thu Feb 21 11:00 CST 2008 >


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