It sounds to me like you have a bad RPM sensor, and a bad Speedo sensor. The RPM sensor is located on your bell housing, it screws in and has a lock nut, 1" I think is the size. Speedo sensor will be at the back end of the trans, and screws in like the RPM sensor. They both will have wires coming out of them, going to a harness, should be a plug in for both. Hope this info helps you out. The parts are pretty pricey,
but if you can do a little wire modification, you
can make a Thermo King RPM sensor work and they used to be a lot less expensive.
mickey-d
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Monday, November 30th, 2009 AT 10:40 PM