Electric Vehicle Forums - Fuel level and fuel pumps

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Tigermidge

09-22-2009 05:26 PM

Fuel level and fuel pumps

It use be the case that you where not suppose to run the fuel lower that 1/4 of a tank on fuel injected cars because it was what cooled the pump and you had premature pump failure.

Is this still the case with newer cars? Ice systems?

Mark

Billyk

09-23-2009 01:38 PM

Re: Fuel level and fuel pumps

The fuel pump is cooled with fuel going thru it.

glennb

09-23-2009 06:07 PM

Re: Fuel level and fuel pumps

Quote:

Originally Posted by Tigermidge (Post 211149)

It use be the case that you where not suppose to run the fuel lower that 1/4 of a tank on fuel injected cars because it was what cooled the pump and you had premature pump failure.

Kind of an 'urban myth' with enough statements that are related to real facts to make it sound plausible......yes, the fuel flowing thru (even the last drops) that help to cool the pump...

jworth

09-23-2009 07:59 PM

Re: Fuel level and fuel pumps

The vehicle isn't going to run long enough without fuel flow to cause any damage.

Bill Winney

09-23-2009 08:26 PM

Re: Fuel level and fuel pumps

If the FEH is like my 01 Mustang the fuel pump is suspended in a tank that also provides cooling by remaining full to the bitter end of the fuel.

This tank holds probably a half gallon of fuel separate from the
tank itself. The shop manual shows something like this.

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