Re: what do the heater hose to for a 2003 Lincoln...
The heater hoses let the hot coolant from the engines cooling system enter the heater core via the heater control valve in order for your vehicle to have heat!!!!
You may try cleaning the filters and checking for loose connections. Heat and cooling filters should be changed or cleaned with some regularity. Like an air conditioner, these things require maintenance that are often overlooked.
The heater core costs about $42.00 at several parts stores....the labor? Well...very good guess is $89.00 per hour to start and depending on what garage you go to...$90 and up.
I could email you the steps to do the job yourself, but I can tell you it is a REAL pain...the entire dash must come off...
Here is a little bit of the steps just to give you and idea:
Disconnect the battery ground cable.
Drain and recycle the engine coolant.
CAUTION
Never open, service or drain the radiator or cooling system when hot; serious burns can occur from the steam and hot coolant. Also, when draining engine coolant, keep in mind that cats and dogs are attracted to ethylene glycol antifreeze and could drink any that is left in an uncovered container or in puddles on the ground. This will prove fatal in sufficient quantities. Always drain coolant into a sealable container. Coolant should be reused unless it is contaminated or is several years old.
Remove the instrument panel. Refer to Section 10.
If equipped with the 5.4L 4V engine, remove the junction block splash shield.
If equipped with the 5.4L 4V engine, remove the bolts and disconnect the cable ends from the starter relay.
If equipped with the 5.4L 4V engine, remove the junction block bracket.
Disconnect the heater core hose couplings.
Remove the retaining screw and remove the A/C plenum demister adapter.
Disconnect the vacuum line from the A/C plenum demister adapter.
Remove the heater core bracket.
Remove the 13 plenum chamber top retaining screws.
Remove the plenum chamber top.
Remove the blend door assembly from the case.
Remove the heater core. To install:
The installation is the reverse of the removal.
The above is to JUST remove the heater core....this part of how to GET to the heater core:
If equipped, remove the floor console assembly.
Remove the lower steering column cover bolts and the cover.
Remove both front door scuff plates.
Remove both side cowl trim panels.
Disconnect the electrical connector from the Brake Pedal Position (BPP) switch.
Remove the radio ground and the GEM/CTM ground bolts.
Disconnect the left side instrument panel main wiring harness connector.
In the engine compartment, remove the bulkhead wiring harness connector bolts and disconnect the wiring connectors.
In the driver’s compartment, release the 6 locking tabs and remove the bulkhead electrical connector from the instrument panel.
Disconnect the air bag diagnostic monitor electrical connector.
Disconnect the inertia fuel shutoff switch electrical connector.
Remove the right side ground bolts.
Disconnect the right side instrument panel wiring harness connectors.
Disconnect the electronic blend door actuator electrical connector.
Disconnect the climate control head vacuum harness connector.
Remove the steering column opening cover reinforcement nuts and the cover reinforcement.
At the base of the steering column, disconnect the air bag sliding contact and the anti-theft sensor electrical connectors.
At the steering column, disconnect the remaining electrical connectors.
If equipped with a transmission range indicator, remove the bolt and disconnect the cable.
Remove the steering column-to-instrument panel nuts and lower the steering column.
Remove the right side front fender splash shield screws and move the shield away from the panel.
Disconnect the antenna cable from the antenna base.
Remove the instrument panel relay cover and disconnect the autolamp sensor electrical connector and/or the sunload sensor connector.
Remove the glove box.
At the passenger’s air bag module, remove the screws, disconnect the electrical connector and remove the air bag module.
Place the air bag module in a safe place with the front facing upward.
Remove the right side assist handle screw covers, the screws and the handle.
At both doors, pull back the weatherstrip seals and remove the windshield garnish moldings.
Remove the instrument panel reinforcement bolt below the left side corner of the glove box.
Through the air bag module opening, remove the instrument panel bolts.
On Expedition, remove the upper instrument panel cowl covers and bolts.
On Navigator, remove the instrument panel defroster grille assembly and the instrument panel cowl top bolts.
At the relay bracket, remove the instrument panel bolt.
At the lower left side of the cigar lighter, remove the instrument panel bolt.
At the both sides, remove the instrument panel-to-cowl side nuts.
At the steering column opening, remove the instrument panel bolts.
Remove the upper instrument panel floor brace bolt.
Using an assistant, remove the instrument panel.
If equipped with the 5.4L 4V engine, remove the junction block splash shield.
If equipped with the 5.4L 4V engine, remove the bolts and disconnect the cable ends from the starter relay.
If equipped with the 5.4L 4V engine, remove the junction block bracket.
Compress the holding tabs and disconnect the heater hoses from the heater core.
Remove the air conditioning plenum screw and the air conditioning plenum demister adapter.
Disconnect the vacuum line.
Remove the heater core bracket screws and the bracket.
Remove the 13 heater housing plenum camber cover screws and the heater housing plenum chamber cover.
Remove the blend door assembly from the heater housing.
you have a bad blend door actuator the clicking sound you hear is the plastic gears inside it slipping the panels covering rear unit can be removed once removed cut a/c on once clicking starts you should be able to tell which one it is they are about the size of a cell phone usually twoo or three screws holding on to air box and one small electrical connector remove and call ford dealership with part# listed on the actuator and purchase new one these are not available aftermarket that i know of
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Rear heater core or hoses going to or from it must be leaking? You have to take the cover off the rear heater assembly to fix it on most vehicles. don-ohio (:^)
Make sure you first check every fuse in the car and under the hood.If every fuse is good then its either the seat heater control module located under each seat,or burned out heating elements.The mirrors could be a faulty switch.
are heater hoses hot there is a valve in the heater hose check to see if it is open if thats ok the door that controls the heat is not working located on top of the heater box usually not to easy to get to
Since your blower is working and it is a heat issue,thats where we'll
start,First thing is have you checked the coolant level in the radiator when
engine is cold,make sure it is filled to top,next verify you have coolant in
reserve ,Start your van and get it up to normal operation temperature,If your
heat gauge on the dash works correctly it should be 190 degrees,Now lift the
hood and locate the two heater hoses going into the heater assembly at the fire
wall,Both hoses should be hot to hold on to,if both are hot and no heat inside
your problem will be the blend air door in heater assembly. if neither hose
is that hot you need to replace the thermostat in the engine to get it up to 195
degrees. if one hose is hot and one is luke warm then the heater core is
blocked and to blame. hope this helps you.
the little orange or red ring around the air hose whare it goes in compressor, must be pushed in while pulling out on air line. a small flathead screwdriver works fine
You may try cleaning the filters and checking for loose connections. Heat and cooling filters should be changed or cleaned with some regularity. Like an air conditioner, these things require maintenance that are often overlooked.
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