I successfully changed the fuel pump on my 2001 Ford Ranger 3.0L 126"wheelbase, flex-fuel truck [1]. But I have some unanswered questions,and they'll plague me the rest of my life if they remain so.Is there a fuel pump timer? How does it work, and where is it?If indeed, the pump is cooled by fuel going *through* the pump, what'sthe advantage of placing the pump *in* the tank?How come Ford has different pumps for different wheelbase trucks thatare the same otherwise? How can the wheelbase, differing by a fewinches, have anything to do with the pump?[1] The "flex-fuel", meaning can take either methanol+gasoline mix orstraight gas, part is indicated by the 8th character of the VIN, V forflex-fuel, U for only straight gas. Apparently that detail is needed toget the correct pump.-- (||) Nehmo (||)

Here's my opinions:Fuel pump timing... not sure what you mean by this. If your talkingabout the time the fuel pump engages when you turn the key... with theengine not running... then the answer is the computer is handling that.I think the main reason for having the pump in the tank... cost.As for different pumps for basically the same vehicle. The only reasonI could think of is that car manufacturers are always making revisionsto parts... attempting to improve them. The different pump in this casemay be an improved version of a previous pump. Remeber that theimproved version may or may not be backward compatible with previousversions due to mounting bolts...etc. This is one of the major reasonsthat application data is so vast at auto stores.

On Wednesday, April 26, 2006 at 6:43:19 AM UTC-7, Nehmo wrote:

Fuel Pump Timer? Pump Location?

Apr 26, 2006 22 Replies

Rate this thread:

annabear1591 8 years ago

Vote

dsi1 8 years ago

It's simple enough to find out if the fuel pump is running with the engine off - you just listen for it. You can stick your ear against the body to hear this.

The fuel pump is probably located in the fuel tank so that it still operates even when there's vapor in the lines. It's probably faster and cheaper to install.

The main reason for different pumps is to supply different flow rates. The bigger the engine, the bigger a pump it will require.

Vote

Join the Discussion

Have something to add? Share your thoughts — no account required.

Didn't find your answer?

Ask the community — no account required