Speedometer

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  #1  
Old 09-12-03, 11:20 AM
fishinfool
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Speedometer

1988 GMC JIMMY 2.8l. Speedometer only works when the truck warms to normal temp. What could be the cause?
 
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  #2  
Old 09-12-03, 12:45 PM
Joe_F
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Bad speed sensor, old tired cable, hardened grease in the cable or speedo head.

Clean/inspect/test.
 
  #3  
Old 09-12-03, 01:22 PM
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Join Date: Aug 2003
Location: Barre,Vermont
Posts: 472
AH YES SPEEDO CABLES, THE GOOD OLD DAYS.
KNOWING IF THE CABLE IS TURNING UPON FAILURE WOULD BE A GOOD THING. IF NOT, NOT SURE IF THIS IS 2WD OR 4WD, BUT THE TEETH ON THE DRIVEN GEAR IN EITHER THE TRANSMISSION OR THE TRANSFER CASE COULD BE WORN..
 
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