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My 2003 ford f350 heater does not work at all

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  • Cars & Trucks Master
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Does the fan work?

Assuming it does then check the valve operation on the heater matrix within the cab, under the dash. Is the valve operating with the heater controls?

Please report findings.

Posted on Nov 04, 2012

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6ya6ya
  • 2 Answers

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Posted on Jan 02, 2017

carsandcomps
  • 722 Answers

SOURCE: i have a 2003 ford f350 with a code p1331 what

I ran this code through Google and it came up as a code for diesels. Is your truck a diesel?

Here is a website that should help you out. Please let me know if you need any further questions.

carsandcomps,

Guru, Premium Expert @ Fixya.com

http://www.thedieselstop.com/forums/f23/p1331-144660/

Posted on May 22, 2010

chuck943
  • 783 Answers

SOURCE: differential fluid in a 2003 ford F350

It really depends on the rear axle you have in your truck because there are actually 3 different ones but all of them you remove the rear cover,then clean it and add a bead of silicone rubber to the cover and reinstall and refill.Here is where the difference comes in as to how fluid much to add. The fill plugs are in different places, one is at the front near where drive shaft hooks up, this one you fill to within 1/4 of the plug openning. The other one is in the rear cover and you fill it to bottom of the hole.

Posted on Mar 12, 2009

DIESELMUDDER
  • 2760 Answers

SOURCE: replace fuel pump on 03 Ford F350 diesel

simple : obtain replacement pump from parts provider (no used stuff)

Now help me out here: thats the year they were bolted to the pass side front of engine
and not inside the tank right? (better go look to see for sure)

using a tube wrench unscrew the fuel lines (i use large wire nuts to temp block off fuel leakage)

with a 12 mm wrench undo the two side bolts holding the pump to block

wiggle pump it should come straight off

clean mounting place on block with solvent let dry

silicone back (or use gasket that comes with pump ) of pump

apply pump to block (depending on where crank stopped you may have some tension on arm you will have to overcome to get flange to meet block )

use locktite (blue)or simmiliar thread lock on bolts retighten firmly but not hang up the dog tight

use light grease or vasolene on tube connections don't try to tighten dry

Now the fun part your diesel now has air in the fuel system

there are two ways to remove this ( hard and harder)
your choice here are both methods

loosten the fuel supply line for #8 injector ( I did not say remove) 1 full turn ought to be enough

crank engine 30 seconds only
wait 5 minutes for starter to cool down
crank engine 30 sec again
did it start but runs rough while it's still running tighten #8 injector (caution fuel under high pressure)
engine smooth out good your lucky
engine did not start yet
wait 5 minutes
crank engine 30 sec again
start yet
if so tighten #8 injector up

Now here's something I've done to my diesel to make this much less a hasstle

trace fuel line as it comes up from pump
obtain a small low pressure electric fuel pump and a two short pieces of fuel line
and a few clamps

use tube cutter and cut fuel line just before it bends to go in filter
deburr edges
slide tube and clamps over pipe (both sides)
insert pump observe flow arrrow towards filter

the wires of pump can be stretched over to #1 battery terminals

now any time you change a filter or open your fuel system for any reason
all you need do is connect pump to battery
open sharader valve on top of filter for a few min
and start truck as normal
then disconnect wires and stow away for another day

Posted on Jul 08, 2009

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6ac94d7.jpg

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