what is the little

[jeffroberts]

part behind battery infront of blower motor that makes noise when ignition is on before it starts and after you cut it off

[mudrunninpig]

sound like the vacume pump?

[jeffroberts]

ok im not a ford guy its a friends if it is bad will the truck not run or start

[strokepower]

fuel pump? im not sure what you are talking about

[jeffroberts]

i think he is right i looked and it does have vac lines going to it

[m-chan68]

Originally Posted by mudrunninpig

sound like the vacume pump?

I agree with this statement. It IS the vacuum pump.

[jeffroberts]

will the vacume pump cause it not to run

[m-chan68]

Originally Posted by jeffroberts

ok im not a ford guy its a friends if it is bad will the truck not run or start

If this part were to fail, his front auto-locking hubs would fail to engage when he selects 4x4, and his mode select functions would default to defrost only in all mode select positions on his HVAC.

[jeffroberts]

its two wheel drive

[jeffroberts]

ok changed all the fuel filters truck ran good for about a week then parked it overnight and then truck didnt want to start after it did would only idle but ran rough now wont start at all the vacuume pump used to be loud but now its quite