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How to replace heater core on a 1987 toyota pickup

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6 Suggested Answers

6ya6ya
  • 2 Answers

SOURCE: I have freestanding Series 8 dishwasher. Lately during the filling cycle water hammer is occurring. How can this be resolved

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Posted on Jan 02, 2017

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chiquititas
  • 1010 Answers

SOURCE: heater core on a 2003 Chevrolet pickup 4 wheel drive crew cab

if you have air conditioning you will need to take it to a garage and recover the r134, you will need to remove the dash to allow you to remove the heater box, it's an ugly job, I've done a dozen or so and can do it in about 6 hours now, the first time it was closer to 11 hrs, good luck

Posted on May 15, 2008

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SOURCE: I need to replace the

its under the dash youll have to remove stuff to get to it but its about an hour long job not too hard to do

Posted on Sep 02, 2008

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SOURCE: HEATER CORE REPLACEMENT IN 1985 CHEVY K20 PICKUP

Go to autozone.com and "Shop" for your part. When you find it look on right side of page and click on "Get instructions installing..." Then register to become a member and BINGO! You'll get your instructions.

Posted on Jul 25, 2009

  • 564 Answers

SOURCE: 1978 chevy scotsdale heater core

does it have a/c,,not hard to do ,,pull glove box,,there are some screws be hide it u need to get out,&any other that hold the heater core cover & blower assembly on

Posted on Feb 03, 2010

Testimonial: "ill give it a shot no ac just never changed one and it has leaked all over inside ty ill go have a go at it"

ZJLimited
  • 17970 Answers

SOURCE: Replacing heater core in a 1995 Toyota 4Runner

The heater core is a small heat exchanger located inside the truck, similar to the radiator at the front of the truck. Coolant is circulated from the engine through the heater core and back to the engine. The heater fan blows fresh, outside air through the heater core; the air is heated and sent on to the interior of the truck. For Toyota Pick-ups/Land Cruiser/4Runner 1989-1996 check this reference repair guide...



Heater Core - REMOVAL & INSTALLATION
(see Figure 1)

  1. Drain the cooling system.
  2. Remove the heater unit assembly. Have alot of towels handy for the leakage of coolant that may spill into your interior.
  3. Remove the fasteners securing the core to the unit, remove the plates and clamps. Pull upwards to remove the core from the unit.
To install:
  1. Inspect the core fins for any blockage. Using compressed air, clean them.
  2. Install the core into the unit placing the plates and clamps into position. Tighten the core screws.
  3. Install the heater unit into the vehicle.
  4. Fill the cooling system.
85a96e3.jpg

Fig. 1: Exploded view of the heater unit assembly-1996 4Runner shown





Heater Unit - REMOVAL & INSTALLATION
(see Figure 1)

Have alot of towels handy for the leakage of coolant that may spill into your interior.
  1. Discharge the A/C system (if applicable), using an approved recovery/recycling machine.
  2. Remove the cooling unit (if applicable).
  3. Drain the cooling system.
CAUTION 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 quantity. Always drain coolant into a sealable container. Coolant should be reused unless it is contaminated or is several years old.
  1. Disconnect the hoses to the heater core. Tag each one so that it may be correctly reinstalled.
  2. On some models you will need to remove the glove box assembly. On others, the instrument panel and reinforcement.
  3. At the heater case under the dash, disconnect the ductwork from the case.
  4. Disconnect the heater control cables from the heater case. Lift the spring clip holding the control cable to allow the cable to be manipulated. Don't deform or crimp the cables.
  1. Disconnect the wiring harness to the blower fan.
  2. Remove the three or four bolts holding the heater case to the dash. Because the inlet tubes project through the firewall, the unit will not fall straight down. It will need to be pulled into the passenger compartment and then brought downward.
To install:
  1. Lift the case into position and carefully place the inlet and outlet pipes through the firewall. Install the retaining bolts holding the case to the dash.
  2. Connect the wiring harness to the blower fan.
  3. Connect the control cables to their linkages. Each must be adjusted so that the motion of the dashboard lever causes the correct corresponding motion in the air door. Both the control lever and the door must reach maximum travel at the same time if full function is to be achieved.
    1. Set the dashboard control to FRESH. Lift the adjustment clip and adjust the air inlet cable towards the heater unit until the linkage is at its maximum travel on Pick-Up and 4Runner. For Land Cruiser, adjust the cable away from the case. Release the adjustment clip.
    2. Set the dashboard control to VENT (Pick-Up) or DEF (4Runner and Land Cruiser). Lift the adjustment clip and adjust the air flow control cable towards the heater unit until the linkage is at its maximum travel. Release the adjustment clip.
    3. Set the temperature control to COOL. Lift the adjustment clip and adjust the air mix control damper control cable away from the heater case until the linkage is at its maximum travel on . For Land Cruiser, adjust the cable towards the case.
  4. Connect or reinstall the ductwork. Make certain each tube is firmly and completely fitted on its port. A light spray of glass cleaner serves as a good lubricant; don't use too much.
  5. Install the glove box and/or instrument panel assembly.
  6. Connect the heater hoses. Use new clamps.
  7. Install the cooling unit (if equipped).
  8. Refill the coolant, then charge the A/C system (if equipped).



Hope this help (remember comment and rated this).

Posted on Aug 02, 2010

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1 Answer

Ive got a 1994 toyota pickup v6 4wd im leaking antifreeze from somewhere behind the motor and its a lot what is leaking and do i fix it?


You have 2 hoses going thru firewall to heater core,check them out,also check other ends going under intake.might just be a loose hose clamp or your heater core is clogged.Is floor board wet.

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Oct 10, 2012 | 1987 Toyota Pickup

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1994 Toyota pickup / 4WD / 4 cyl. Replaced heater core. Checked heater control valve- working correctly. Filled system from upper hoses at firewall to fill heater core. Connected hoses. replaced...


you could try running engine and open top heater core hose highest point should bleed it fully, failing that look at manual should tell how much water is in system

Feb 01, 2011 | 1994 Toyota Pickup

1 Answer

The heater will not work i cant get the water to go through the heater core


Try putting water through it both ways, if it just won't go then pulling the heater core is the only option. You may be able to get it opened up and flowing once you have it out- if you see a bunch of scale in it try a mild acid such as a bathroom rust remover. If it's plugged with radiator sealer then lye will remove that.

And you may have to do the hateful thing and buy a new one.

lp

Dec 29, 2010 | 1987 Toyota Pickup

2 Answers

How do I replace the heater core in my 1987 Chevrolet Custom Deluxe pickup truck?


Inspect/Replace If it is necessary to remove the heater assembly, the cooling system must be drained before removing the heater core.
When a heater core leaks, a new heater core is installed or the old one repaired.
Heater Housing
  • The heater housing is usually under the dash and must be removed to gain access to the heater core.
  • Procedures for replacing the heater core vary with the year, make, and model of car. It threfore necessary to consult the manufacturer's repair manuals for the proper procedure for replacement.
f74-01.gif The heater housing is disassembled to get to the heater core. Heater Core
  • Remove the access panels(s) or the split heater/air conditioning case to gain acess to the heater core.
  • Remove the heater coolant hoses.
  • Remove the cable and/or vacuum control lines (if equipped).
  • Remove the heater core securing brackets and/or clamps.
  • Lift the core from the case. Do not use force. Take care not to damage the fins of the heater core when removing.
  • To reinstall the heater core, reverse the removal steps.
When the heater core leaks and must be repaired or replaced, it is a very difficult and time-consuming job primarily because of the core's location deep within the firewall of the car. For this reason always leak test a replacement heater core before installation.

Dec 15, 2010 | 1987 Chevrolet R10

1 Answer

I jumped strarted my 87 toyota pickup incorrectly, now it will start but the heater is not working.


sounds like u have blown the blower motor resistor.replace it should fix problem.hope this helps

Nov 13, 2010 | 1987 Toyota Pickup

1 Answer

How do I replace the heater core on a 1985 toyota pickup without A.C.


the core is behind the middle of the firewall. follow your heater hoses inthe engine compartment. Under the dash remove the neccess. to replace

Jun 15, 2010 | 1985 Toyota Pickup

1 Answer

I have no heat can u help my car is a 1987 toyota cressida


1. Make sure the coolant system is full
2. If it is, you need to replace your heater core underneath the dash.

Nov 14, 2009 | 1987 Toyota Cressida

1 Answer

Heater in truck does not put out much heat


check the hoses going into the firewall for the heater and see if they are getting hot before you go too far. if one is hot and the other is cold then you may need to flush or replace the heater core.

Feb 16, 2009 | 1987 Isuzu Pickup

1 Answer

Coolant leaking on passenger side floor board from heater core.


that means your heater core is bad. It is not hard to fix but it is time consuming. Heater core is located behind glove box

Feb 01, 2009 | 1987 Chevrolet S-10 Pickup

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