AC Fuel gauges new tanks

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TADTOOMUCH
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Location: S.W. Michigan

AC Fuel gauges new tanks

Post by TADTOOMUCH »

I replaced my galvanized fuel tanks with two Moeller poly tanks. When I hooked up my sender to the gauges they show full. So I removed the resistor from the back of the gauges thinking that would help. Now the engines won’t start and it pops the breaker on the dash. Do I need new gauges? Everything is wired properly and senders both give a range of 33-240 ohms? Any help?
Boat Name: A TAD TOO MUCH
Model: 1978 F-32 Sedan Cruiser
Engines: Twin Chry 360's 666 hrs original engines

2013 Mercury 300 Ocean Runner 9.9hp Merc 4 stroke
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prowlersfish
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Re: AC Fuel gauges new tanks

Post by prowlersfish »

Sounds like you may have hooked the gauge power wire to ground or some how caused a short there . Are senders the ones you had or new with the tank ?
Boating is good for the soul
77/78 TROJAN F36 Conv.
6BTA Cummins diesels
Life is to short for a ugly boat :D
mikeandanne
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Re: AC Fuel gauges new tanks

Post by mikeandanne »

When I put new moeller tanks in the same year f32, the old AC gauges would not work, had to get new ones.....the resistance range was off....did you connect the new senders at the termination block in the side panel ? Mike
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TADTOOMUCH
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Joined: Thu Jul 12, 2007 9:58 am
Location: S.W. Michigan

Re: AC Fuel gauges new tanks

Post by TADTOOMUCH »

Thanks for the replies guys. I did run the ground wire all the way to the termination block in the bottom of the gauge cluster in the dash. I ordered two new gauges and will install them this weekend and let you know. I suspected as much that the resistance range would not work with the new senders that came with the new tanks. Hopefully this solves the problem and I will have trouble free summer as far as fuel delivery goes. Now if I can keep it from snowing here in Michigan that would be great.
Boat Name: A TAD TOO MUCH
Model: 1978 F-32 Sedan Cruiser
Engines: Twin Chry 360's 666 hrs original engines

2013 Mercury 300 Ocean Runner 9.9hp Merc 4 stroke
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prowlersfish
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Posts: 12645
Joined: Sat Nov 05, 2005 6:56 pm
Location: Lower Chesapeake Bay ,Va

Re: AC Fuel gauges new tanks

Post by prowlersfish »

We can try and help you with the boat but help with snow is beyond what we can do .
Boating is good for the soul
77/78 TROJAN F36 Conv.
6BTA Cummins diesels
Life is to short for a ugly boat :D
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TADTOOMUCH
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Posts: 526
Joined: Thu Jul 12, 2007 9:58 am
Location: S.W. Michigan

Re: AC Fuel gauges new tanks

Post by TADTOOMUCH »

Well I installed two new fuel gauges (sierra heavy duty ) and they work great. If anyone needs two new AC Delco fuel gauges for their Trojan, let me know. I have two and they work great. Just didn't work with my new fuel tank sender unit.
Boat Name: A TAD TOO MUCH
Model: 1978 F-32 Sedan Cruiser
Engines: Twin Chry 360's 666 hrs original engines

2013 Mercury 300 Ocean Runner 9.9hp Merc 4 stroke
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