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  '64 1/2 to '73 -- The Classic Mustang
  Fuel gauge problems on 69 Mach

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Author Topic:   Fuel gauge problems on 69 Mach
Gary
Gearhead

Posts: 725
From: Sarasota, Fla. USA
Registered: Jun 99

posted 03-26-2002 03:17 PM     Click Here to See the Profile for Gary   Click Here to Email Gary     Edit/Delete Message   Reply w/Quote
Since I picked up this car a couple of weeks ago Iv'e been fixing little stuff here and there. Now comes to gas gauge, gauge reads pegged out past full when key is on. What is the usual cause and cure for this problem?
Thanks

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lyle29464
Gearhead

Posts: 827
From: Mt. Pleasant S.C.
Registered: Mar 2000

posted 03-26-2002 05:49 PM     Click Here to See the Profile for lyle29464   Click Here to Email lyle29464     Edit/Delete Message   Reply w/Quote
If it's not full The sending unit might be shorted (unhook the wire) or the wire is grounded to the frame. If you unhook the wire at the tank and it goes to empty it's the unit if not it it's the wire. a omm meter will tell you also. you will need to unhook both ends.

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Dave Witthoeft
Gearhead

Posts: 1994
From: IL.
Registered: Dec 2000

posted 03-27-2002 12:56 AM     Click Here to See the Profile for Dave Witthoeft   Click Here to Email Dave Witthoeft     Edit/Delete Message   Reply w/Quote
Mine reads empty all the time. If I unhook the wire at the tank and ground it to the frame it should read full? Or would the gage on the dash be broken?

------------------
MCA# 48755
71 Mach 1
69 Fastback
92 F-150
M&M#884

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maxo
Journeyman

Posts: 53
From: Fresno, CA
Registered: Jan 2002

posted 03-27-2002 10:50 AM     Click Here to See the Profile for maxo   Click Here to Email maxo     Edit/Delete Message   Reply w/Quote
I would check the ground, mine reads empty most of the time...but sometimes it works. I've been told to check the ground also ( Just haven't got around to it yet )

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