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12-02-2006, 03:59 AM
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#1 |
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Registered User
Join Date: Sep 2006
Location: vacaville,CA
Posts: 3
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fuel guage reading funny?
i installed a 4o gal tank in the rear of my truck today and when i hook up the sending unit wire it reads half full , but it was bone dry so i put 5 gal in it and it reads 1/4 past full. is it a bad sending unit or are thay not compatiable with are trucks guages? my truck is a 71 and the tank is out of a 84 blazer. any help please!
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12-02-2006, 06:31 AM
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#2 |
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Senior Member
Join Date: Jul 2001
Location: Muskegon,MI,USA
Posts: 6,026
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Re: fuel guage reading funny?
The sending unit on our year trucks sends a signal to the dash unit from 0 ohms to 90 ohms, (0=empty, 90 = full). I would suggest checking your sending unit to see what ohm range it is has. You may have a bad unit or the ground could be acting up. I don't know what ohm readings the 84 is supposed to have.
Jim |
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