The FSM shows two "modules" that look very much like fuel pump / sender assemblies, but it lists one as the sender, and the other as the fuel pump. However, looking at the saddle bag gas tank design, there does not appear to be a way for the remaining gas at the each "bag" to flow into the other "bag".

Do the S-197 Mustangs have twin fuel pumps? If not, how does it pick up the fuel at the bottom of the opposite bag? And for that matter, how does a single sender work to detect fuel level in both bags?

 

It doesn't , that is why my "fuel low" message comes on and the fuel gauge drops below empty for a few minutes when hanging it loose around corners with less than 1/3 of a tank of gas...

 

That doesn't explain how it gets the gas from the other "saddle".

 

i guess it is just the pressure the pump makes brings the fuel over

 

There is a float on the passenger side of the tank as well that signals the transfer pump to send fuel over.. The drivers side will always (except when full) have more fuel in it than the passenger side.

 

So would it be a good idea to fill the gas tank with the engine running so the transfer pump does its thing?

 

Isn't that illegal just like smoking a cigarette at the gas pump?

Anyway, the two sides of the tank (1) are connected over the top of the driveshaft:


What's interesting is that the MN12's saddle tanks were connected below the driveshaft....

 

Wouldn't it have made more sense for Ford to set it up so the passenger side always had more fuel in it? This would have balanced out the weight of the driver. Or at least partially balanced it out.

 

Design by the same guys (gals) that think when you put the vent selector pointer to the little picture of the guy with the arrow pointing at his feet you want to defrost the windshield. I can't understand some things because I wear my foil helmet almost all the time.

 

Actually I believe the Japanese developed or at least widely used picture based icons to replace text to improve productivity in both cars and in industry.

I.e.
Icon of road wheel digging up debris to indicate traction control is ON
Icon of air hitting little person's feet or face or both to indicate vent controls

Personally, I liked it when it said VENT, or DEFROST, MIX, TRAC CTRL, etc..

 

I think he's talking about the fact that when you set it to blow at your feet , most of the air still comes out the defrost vents ...

 

Interesting. Actually if I want a cheap way of preventing fog buildup on my windshield, I use the hot air setting aimed at the floor. This way, I don't need to turn on my A/C compressor and reduce my gas mileage.

 

True, but it is also a good idea to cycle the A/C compressor at least once every 2 weeks or so to keep everything cycled properly. The freon (or non-freon stuff now) can settle and some of the rubber seals can get dried out after several years.