I have the autometer classic gauges and the FFR fuel cell. I've searched the forum and the sender and gauge is wired correctly, power, ground and sender wires. The gauge won't move off of empty. Any ideas on hoe to test the gauge?
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FFR4819 MK3- purchased un-started from a forum member. EFI 302 with Twisted Wedge heads, Tremec 3550 TKO, Wilwoods front and rear, 3-link, Pin Drive width, SAI mod, Levy (Ron Davis)radiator, http://s732.photobucket.com/albums/w...cpZZ1QQtppZZ16
If the sender is the same that Fuel Safe has used for years, it's a Centroid Products sender that needs to be calibrated. Here's the instruction sheet. There's some little pots on the top that you need to adjust.
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FFR Challenge car #4182SP Carbed 302, Holley 600CFM, E303 cam, T5, 3 link rear-3:55, Levy wheels, Kumho tires, Fire Safe fuel cell, Griffin race radiator, ISIS wiring system, MSD 6ALN NASCAR ignition, 85 Mustang distributor,
The gauge seems to be stuck on E. I have disconnected the send wire and get no movement, I have also disconnected the positive wireat the sender, still get no movement? The gauge is an autometer vintage with resistance of 16/158.
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FFR4819 MK3- purchased un-started from a forum member. EFI 302 with Twisted Wedge heads, Tremec 3550 TKO, Wilwoods front and rear, 3-link, Pin Drive width, SAI mod, Levy (Ron Davis)radiator, http://s732.photobucket.com/albums/w...cpZZ1QQtppZZ16
The gauge is simply a volt meter, and the sender is a variable resistor. Connect a 9 volt battery to the gauge. If the needle goes up to about 3/4 tank, the gauge is good.
Pull the centroid sender from the tank, and measure the resistance across the poles. Put it in a bucket of water, and measure the resistance again. If it doesn't change, the sender is bad.
If both check out, there's a problem in the wiring.
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.boB
Dart 427W, Momar 8 Stack EFI, 600'ish hp, TKO, 3.55 TruTrac, Red with Ghost Flames. More fun than should legally be allowed. http://home.comcast.net/~bobcowan035/site/
I'm pretty sure the 16-158 ohms gauge is compatible with the Mustang (donor) fuel sender. Is that what sender FFR supplies with their tank? If not, you will need a different gauge, or a new sending unit, (unless yours can be calibrated as Ron suggests).
Well, it's working. I pulled the gauge to verify proper wiring (all was fine), reinstalled it and it is now working. I must have had a short or a bad connection at the gauge. Thanks to all for the replies
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FFR4819 MK3- purchased un-started from a forum member. EFI 302 with Twisted Wedge heads, Tremec 3550 TKO, Wilwoods front and rear, 3-link, Pin Drive width, SAI mod, Levy (Ron Davis)radiator, http://s732.photobucket.com/albums/w...cpZZ1QQtppZZ16
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