peterbilt speedometer and odometer Quit? - TheDieselGarage.com
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post #1 of 5 (permalink) Old 03-27-2011, 11:34 PM Thread Starter
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peterbilt speedometer and odometer Quit?

1998 379 peterbilt speedometer and odometer quit. The transmission has one sensor on the tailshaft that I pulled out and cleaned up then reinstalled, nothing changed anyone know where to go next or how to test the sensor?
Thanks for any help!!
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post #2 of 5 (permalink) Old 03-28-2011, 12:00 AM
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I've got a 90 and had lots of problems with the plugs going into the back of the gauges. You might try opening up the dash and wiggling the connectors around to make sure you have a good connection.
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post #3 of 5 (permalink) Old 03-28-2011, 01:43 AM
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there is a link in the handy links sticky, supermiller, has schematics for petes.

But a quick trouble check is with a multi meter check for power to one of the wires going to the trans sensor, if you have power there , check for power across the plug it won't be 12V more like 3 or 4 if you have that check for resistance across the sensor if none sensor is prolly bad, if you have no power to the plug check fuses , then check schematic tio find wire number, sometimes they change going thru a plug. trace till you find an open .

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post #4 of 5 (permalink) Old 03-28-2011, 01:44 AM
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post #5 of 5 (permalink) Old 04-06-2011, 02:01 AM Thread Starter
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Thanks for all the help!!!
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