Mustang gas tank problem??

Discussion in 'Technical' started by Chief1010, Mar 30, 2016.

  1. Chief1010

    Chief1010 Member

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    72 Maverick 306, 351W heads.. 75 Maverick ( parts car )... 71 Maverick ( in storage ).. 71 Torino 500 ,306, TCI Trans, Detroit Locker..
    I used the thread on here to put a 69 model gas tank in my 72 Maverick ( great info by the way ).. I done everything as noted, but the issue I'm having is on the gas gauge.. Turn the key on and the gauge goes way past full. I only have about 7 gallons in the car.. Possible grounding issue maybe??
     
    Chief1010, Mar 30, 2016
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  2. Craig Selvey

    Craig Selvey Indiana State Rep - MCCI

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    I would think a fuel sender issue. Pull the plug off and take a test light and probe the female end of the plug. Light should flash....not be constant. If it flashes...it is the sender. If it stays on....probably the instrument cluster voltage regulator.
     
    Craig Selvey, Mar 30, 2016
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  3. mav man

    mav man Member

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    The mustang sender probably isn't the same ohms as the Maverick. The gauge works with ohms from the sender.
     
    mav man, Mar 31, 2016
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  4. 71gold

    71gold Frank Cooper Supporting Member

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    I have an early Mustang sender in my Mav.
     
    71gold, Mar 31, 2016
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  5. 351Blueblood

    351Blueblood Member

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    Ok now what's the deal with senders? I just bought a 69 tank and 69 sender for my 71. Will my stock 71 sender work correct in 69 tank? I also notice my stock sender is a 2 wire and the 69 is one wire?
     
    351Blueblood, Apr 2, 2016
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  6. Chief1010

    Chief1010 Member

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    The sender works fine.. It was the voltage regulator for the instrument cluster that was bad.. Your 71 sender should work just fine..
     
    Chief1010, Apr 2, 2016
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  7. bmcdaniel

    bmcdaniel Senile Member

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    All Ford senders up until the mid-80's, IIRC, were the same resistance range, roughly 75-8 ohms.
     
    bmcdaniel, Apr 3, 2016
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