Question about Ford F-150

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Do I have to remove the dashboard to replace the heater core in a 1985 F 150, six cylinder with a/c, and if so, are illustrations, etc. available that are more complete than Haynes or Chilton's?

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  • Ronnie Wilson May 11, 2010

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F-100---350 & BRONCO
Less Air Conditioning

  1. Disconnect battery ground cable.
  2. Disconnect cable from temperature blend door and the mounting bracket from top of heater assembly.
  3. Disconnect blower motor and resistor electrical connectors.
  4. Disconnect and plug hoses from heater core.
  5. Working under instrument panel, remove 2 nuts on 1980---81 models, or 3 nuts on 1982---87 models, attaching left side of heater assembly and right side of plenum to dash.
  6. On 1980---81 models, remove screw attaching top center of heater assembly to dash.
  7. On all models, remove 2 screws attaching right side of heater assembly to dash, then lift heater assembly out of vehicle.
  8. Remove heater housing plate attaching screws, nut and bolt and the plate.
  9. On 1980---82 models, remove 3 heater core frame attaching screws and the frame.
  10. On all models, slide heater core and seal out of heater assembly, Fig. 13.
  11. Reverse procedure to install.

Posted on Jul 24, 2009

  • Ronnie Wilson Jul 24, 2009

    F-100---350 & BRONCO
    Less Air Conditioning


    1. Disconnect battery ground cable.
    2. Disconnect cable from temperature blend door and the mounting bracket from top of heater assembly.
    3. Disconnect blower motor and resistor electrical connectors.
    4. Disconnect and plug hoses from heater core.
    5. Working under instrument panel, remove 2 nuts on 1980---81 models, or 3 nuts on 1982---87 models, attaching left side of heater assembly and right side of plenum to dash.
    6. On 1980---81 models, remove screw attaching top center of heater assembly to dash.
    7. On all models, remove 2 screws attaching right side of heater assembly to dash, then lift heater assembly out of vehicle.
    8. Remove heater housing plate attaching screws, nut and bolt and the plate.
    9. On 1980---82 models, remove 3 heater core frame attaching screws and the frame.
    10. On all models, slide heater core and seal out of heater assembly, Fig. 13.
    11. Reverse procedure to install.

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Yes

Posted on Jul 24, 2009

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1 Answer

We're the shut off valve on heater core 2004 chevy


Keep looking - there isn't a shut-off valve for the heater core. Water flows through the all the time. The only time you get heat is when you set the controls for it and then cabin air is routed through the core. All other times it bypasses it. If you have a leaking heater core, in most cases you can remove the heater hoses at the firewall and using a hose adapter available at any hardware store with a couple clamps, you can make a bypass loop of the core until you can get it replaced. Of course you have no cabin heat until you repair or replace the core. It is not recommended to stub off the ends of the heater hoses because on some vehicles, that loop provides other cooling functions such as cylinder heads, etc. That is why looping it is the safer choice.

Dec 06, 2016 | Cars & Trucks

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We're is shut off valve on heater core


There isn't a shut-off valve for the heater core. Water flows through the all the time. The only time you get heat is when you set the controls for it and then cabin air is routed through the core. All other times it bypasses it. If you have a leaking heater core, in most cases you can remove the heater hoses at the firewall and using a hose adapter available at any hardware store with a couple clamps, you can make a bypass loop of the core until you can get it replaced. Of course you have no cabin heat until you repair or replace the core. It is not recommended to stub off the ends of the heater hoses because on some vehicles, that loop provides other cooling functions such as cylinder heads, etc. That is why looping it is the safer choice.

Dec 06, 2016 | Cars & Trucks

1 Answer

How to install a new heater ore for a 2002 saturn sl


It's a long 7-10 hour job.

Have to remove the dashboard

then remove hoses to heater core
then remove wires going to heater core circuit board
then remove heater core
replace it and put everything back together without messing anything under your dashboard.

Mechanics charge between $700 to $1000 to replace one.

If the core is not leaking (wet passenger side floor) you may want to try a reverse flush before touching anything, remove the 2 hoses in the engine compartment at the firewall leading to the heater core and with a garden hose flood the heater core connector until it the water is clear then do the other connector.

If that don't work and your not sure you can do the replacement correctly don't do it.

Aug 24, 2014 | 2002 Saturn L-Series

1 Answer

How to replace a 1999 toyota camry 4 cylinder heater core


Instructions
    • Drain the Camry's engine coolant, using a clean container for reuse. Disconnect the negative battery cable and wait a minute and a half for the airbag system to de-energize. Discharge and recover the air conditioner refrigerant.
    • 2Disconnect air conditioner suction hose and liquid pipe, then clamp on the tubes with an SST clamp. (Make sure you don't deform the tube). Disconnect the heater core hoses.

    • 3Disassemble every component of the dashboard, starting with the steering wheel and column. Removal includes the door scuff plates, cowl side trim, console panels and air bags. You'll need a second person's help to remove the dashboard from the interior.
    • 4Remove or disconnect all air ducts, the heater blower assembly, lower defroster nozzles, air conditioning radiator assembly. Remove the mode damper servo sub-assembly and Airmix damper servo sub-assembly, then remove the core from the air conditioner assembly.
    • 5Install the replacement heater core into air conditioner assembly. Reassemble all components of the heating/air conditioning unit, dashboard and dashboard components. Connect the heater core and A/C suction and pressure hoses, lubricating the O-rings with compressor oil.
    • 6Attach the negative battery cable, fill the cooling system and evacuate and recharge the air conditioner. Start up the engine and check for leaks in the system.

Dec 27, 2012 | 1999 Toyota Camry

1 Answer

Replace heater core


Instructions
    • Drain the cooling system. Draining the cooling system will prevent toxic engine coolant from leaking into the passenger cabin of the vehicle during removal of the heater core. To drain the cooling system, simply disconnect the lower radiator hose from the radiator by loosening the hose clamp and pulling the hose off. Be sure to drain the fluid into a sealable container and dispose of the coolant at an appropriate disposal site.
    • 2Pull the dashboard six inches rearward. In order to do this, you must remove the following parts; the center dash bolt (located under the defroster vent cover), the bolts under the driver and passenger kick boards, the bolt connecting the dashboard to the radio mount, and the the bolt connecting the dashboard to the rear of the glove box. The locations of these bolts are immediately apparent upon looking under the dash. Once you have removed these bolts, you can pull the dashboard rearward and secure it.
    • 3Remove the heater core box. The heater core box is a black plastic box that surrounds the heater core. This part should be visible when looking down into the dashboard from the passenger side seat. Remove the two bolts on top holding it to the firewall and another on the bottom near the foot well. After removal of these bolts, the heater core and box are attached to the vehicle only by the coolant lines, which you can now disconnect by reaching into the box and pulling them off of the heater core (you may have to loosen the clamps first).
    • 4Install the new heater core. This is accomplished by applying steps 1 through 3 in reverse order; re-connect heater core coolant line, re-install heater core box (be sure to apply silicon sealant to the edges of the box, hermetically sealing it), replace the dashboard and install bolts, and re-fill the cooling system.



Oct 22, 2012 | 1999 Chrysler 300M

1 Answer

Steam slowly coming out of passenger side vent.Smells like antifreeze.dont see nothing leaking.If heating core how hard to replace.


The heater core is located behind the dashboard, on the passenger side. Steam from the vent and an antifreeze smell is a decimate sign that the heater core is leaking and needs replacement.
The procedure for removal and installation varies depending on your make and model, your profile says only "ford cars and trucks" so I can't say off the top of my head if your vehicle is an easy job or a hard one.
A simple instalation would involve removing only an access panel under the dash and maybe the glove box door. Difficult ones can require removal of the entire dashboard.
Look through a repair manual for your make and model (available at almost any parts store) to see how your heater core is accessed and decide if you can do the job yourself. Good luck.

Mar 06, 2011 | Ford F-150 Cars & Trucks

1 Answer

How do you remove heater coil unit ?


This will be a big job. The heater core is tucked up under the dashboard. In some cases you can get the heater core out without removing the dashboard, in other cases some or most of the dashboard will need to come out.

If you are entertaining tackling this job yourself, you will definitely need a service manual. The ones from automotive stores, Haynes, Chilton, etc, will provide generic instructions. For specific detailed instructions, order a Workshop manual for your vehicle. It will provide detailed instructions on how to remove, test, repair, replace the heater core.

In general, the Haynes and similar manuals provide basic information for those who have skill in repairing vehicles with little assistance. The Workshop manuals also require skill but are dedicated to just one model and year and provide much more detailed instructions.

Best of luck, Jim

Feb 23, 2011 | 1999 Dodge Dakota

1 Answer

Need to replace heater core


Very very big job. Only do this if you really really love your car. Here is the 100ft overview:

*Disconnect the heater hoses at the heater core inside the engine compartment. (recommend cutting the hoses and replacing with new ones)
*Disconnect the heater valve cable from the heater valve
*Remove dashboard (involves removing steering wheel/column, radio, glove comp, etc)
*Remove the heater assembly (big black plastic box behind the radio)

The core is inside the heater assembly.

Again, this is a big job, and it will probably be very frustrating at times (I know from experience). If you do not have a repair manual for the car and you think you want to try this...get the manual first!

Dec 06, 2010 | 1992 Honda Accord

3 Answers

Do you have to remove whole dashboard on 96 gmc jimmy to remove and replace heater core?or can you do everything from underneath the glove box?


  1. Remove the front dash panel by turning the lower screws in a counter-clockwise direction, then unscrewing the single bolt on the lip of the instrument cluster and pulling the panel out. Remove the rear wiper switch and the 4x4 switches, if applicable. Lowering the tilt wheel will allow the panel to be totally removed.
  2. Remove the radio, headlight switch module and glove box by turning their screws in a counter-clockwise direction.
  3. Remove the main dashboard by unbolting it at the front, between the windshield and firewall. There are six to eight bolts holding it in, and, once they are removed, the dash can be pulled away from the firewall. Be careful not to pull too much, as the wiring harness could become damaged.
  4. Drain the coolant system by turning the drain plug on the lower left corner of the radiator and allowing the fluid to fall into the drain pan. Uncapping the radiator can reduce the internal pressure.
  5. Remove the heater core hoses, on the upper left of the engine bay, by pinching their hose clamps with a pair of pliers and pulling them off. Some models will have screw-type hose clamps; turning them counter-clockwise will loosen them. Age and heat may have stuck the hoses to the core nipples, and the hoses can be cut right at these nipples if necessary. Leave enough hose to reconnect the new core.
  6. Unbolt the heater core's mounts with a socket wrench in a counter-clockwise direction. Once the bolts are free, the heater core can be maneuvered toward the windshield and slid out. Some coolant may splash out, so have a towel handy.
  7. Replace the heater core with a new one by sliding it into place and securing the mounting bolts.
  8. Reconnect the heater core's hoses, turn the radiator's drain plug clockwise to close it, then refill the coolant system with a 50/50 percent mix of coolant and water.
  9. Reconnect the dashboard to the firewall, then replace the front dash panel and fasten its instrument cluster screw and bottom bolts.
  10. Crank up the truck and add coolant until the heater core is filled and blowing hot air.
  11. Replace the radiator cap.
The Jimmy uses a coolant-heated radiator core mounted in the dashboard to provide heated air into the passenger compartment. This heater core can become clogged and leak, as it is usually the lowest point in the coolant system and debris settles into it. Replacement of the heater core will take the average of about two hours to complete. Good luck

Nov 19, 2009 | 1996 GMC Jimmy

1 Answer

Replacing a heater core


YOU DO NOT NEED TO REMOVE THE DASH BOARD. IT WILL BE BEHIND THE GLOVE BOX. LOOK UNDERNEATH THE DASH AND YOU WILL NEED TO REMOVE A PANEL TO GAIN ACCESS TO THE HEATER CORE. THE PANEL WILL BE ABOVE THE PASSENGERS FEET ON THE FIREWALL.

Jan 24, 2009 | 1991 Chevrolet Cavalier

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