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trfm8

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ok so I was driving my ZJ today and I glanced down and noticed the gas gauge was barely above empty. so i pulled into a gas station filled it up, $40 later im set to go. try to start it up and it barely gets going. moved about 10 feet and died. long and the short of it was that it ended up being a bad fuse to the fuel pump. pluged it in and it started right up. now my question is why! why did the fuse go out. im kinda concerned because that fuel pump has less than 15k miles on it.
 
Would you rather blow a fuse or blow that fuelpump? Fuse for me thanks. Swampy hit is with the possible empty blown fuse combo.

If it happens again take a look at the wiring or have the shop that did the pump take a look at the pump. Might be faulty.
 
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trfm8;

.. Most fuel pumps in the tanks of modern truck are gyrators with metal to metal rotating parts. The electric motors and the metal parts create a lot of heat. The only coolant is the fuel. As the fuel depletes there is less to carry off the heat.
.. The motor will draw more currant through the fuse as the temperature goes up. At some point the motor may not have any fuel covering it and it might mildly lockup when shut off and then draw a large surge of currant to restart it and there by blowing the fuse.

.. But wait! Don't go to sleep yet! There is more. Remember the rotating metal parts? Gasoline is not the worlds best lubricant. Gyrator pumps will be damaged if run without fuel to cool and lubricate the steel parts. I use a small amount of Two Cycle Outboard Oil to lube the gyrator in my trucks electric fuel pumps.
More INFO below;
link> UPPER-LUBE REDUCES CARBON

Have a good one and CUL.. Don S..
 
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