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07-22-2006, 11:53 PM
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#1 |
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Registered User
Join Date: Feb 2005
Location: Carl Junction, Missouri
Posts: 2,061
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Calling Gmcpaul!
i bought the poly blazer tank for my truck last year and i'm finally to the point of driving it and i have a problem with my gauge. i have ran the sending unit wire to my idiot light fuel gauge and then i got a performance fuel gauge and moved it to there, and both wouldn't work correctly. for the aftermarket gauge i ran the wire from the gauge directly to the tank, no fuse panel needed they said. the gauge has power and is grounded, and the sending unit is grounded. now the tank has around 15 gallons so that's about 3/4 i would think.when you turn the key, the gauge needle moves an 1/8th inch, and not even past the E for empty (because with the key off, the gauge needle goes far below E).
i think i've narrowed the problem to the sending unit. is it a 0-90 ohm sending unit? the gauge i bought was for the standard GM 0-90 ohm one. if it is then i guess the float is stuck inside the tank and would need to remove it. thanks a bunch, matt hufham |
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07-23-2006, 12:21 AM
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#2 |
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Msgt USAF Ret
  
Join Date: Jan 2005
Location: Kalamazoo, Michigan
Posts: 8,719
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Re: Calling Gmcpaul!
this may help.
http://www.6066gmcguy.org/Electrical-02.htm
__________________
VetteVet metallic green 67 stepside 74 corvette convertible 1965 Harley sportster 1995 Harley wide glide Growing old is hell, but it beats the alternative. |
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07-24-2006, 11:21 AM
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#3 |
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Registered User
Join Date: Feb 2005
Location: Carl Junction, Missouri
Posts: 2,061
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Re: Calling Gmcpaul!
i did a test yesterday, disconnected the wire to the gauge that goes to the sending unit, turn the key to run. if the gauge pegs out over full, then the gauge is fine, it's the sending unit, which is what it did. i need to drive off about 14 gallons of gas before dropping the tank.
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07-24-2006, 01:07 PM
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#4 |
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Msgt USAF Ret
Join Date: Jan 2005
Location: Kalamazoo, Michigan
Posts: 8,719
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Re: Calling Gmcpaul!
I'm curious if the website helped you at all? VV
__________________
VetteVet metallic green 67 stepside 74 corvette convertible 1965 Harley sportster 1995 Harley wide glide Growing old is hell, but it beats the alternative. |
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07-24-2006, 01:33 PM
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#5 |
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Registered User
Join Date: Feb 2005
Location: Carl Junction, Missouri
Posts: 2,061
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Re: Calling Gmcpaul!
yea, this website. someone else did this in a recent topic and i tried it out aswell.
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07-25-2006, 06:18 AM
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#6 |
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Senior Member
 Join Date: Mar 2000
Location: Rockville,In. USA
Posts: 3,721
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Re: Calling Gmcpaul!
Matt the sender is a 0-90 Ohm. Check to make sure float is solid and empty, sometimes the solder ring that connects the 2 halves are damaged during installation or handling creating a small gap in solder joint that allows fuel in, normally in this case though the gauge works fine at first and slowly quits working as float fills. Shoot me a email at robbinspd1199@yahoo.com to update me once you find the problem. A friend emailed us a link to this post as I had missed your posting it.
GMCPaul |
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07-26-2006, 07:08 PM
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#7 |
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Registered User
Join Date: Feb 2005
Location: Carl Junction, Missouri
Posts: 2,061
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Re: Calling Gmcpaul!
ok i got the tank down, got the float out, and i found many hairline cracks. i bought a gas tank repair kit, basically JB weld with a fiberglass cloth.
   it has to cure 6 hours, so tomorrow i'll be putting the sending unit back in and tank in |
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