Question about 1992 Toyota 4Runner

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92 toyota 4runner Heater core bypass - 1992 Toyota 4Runner

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  • Toyota Master
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Disconnect hoses from heater core and using 5/8 or 3/4 tubing ( depending on hose size) connect together and clamp tightly

Posted on May 18, 2015

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  • Toyota Master
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-What about...?


Good Luck

mai

Posted on May 18, 2015

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Posted on Jan 02, 2017

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

  • 21 Answers

SOURCE: my heater core is not clogged but i still get no

their is a valve on one of the two lines going into the heater core that could be stuck shut. i would get the vehicle up to operating temp and feel the tempeture on both the lines. if one line is hot and one line is cold, that valve is probably stuck. sometimes the valve just gets stuck on the outside mechanism and a little lubricant will fix it. you should be able to open and close the valve manuely to check if its working.

Posted on Dec 02, 2010

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1 Answer

Having troubles getting the heater core out of my 95 4runner , need to know if I absolutely have to discharge the A/C system first?


Heater cores operate using radiator fluid and the have to be drained unless you want a mess in your truck.

Oct 14, 2013 | 1995 Toyota 4Runner

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1990 toyota 4runner heater is blowing cold air


could be your heater core, um try checking the heater assembly in the dash, something may have broke so the heat isn't being switched over, and it is staying on cold. Regularly check the fluids in the motor and top up as needed

Nov 21, 2011 | 1990 Toyota 4Runner

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1996 4runner leaking coolnt threw discharge hose of air coditioner is heater core bad


Check your clamps on the hoses that go into your heater other then that ye it sounds like your heater core is leaking

Oct 12, 2011 | 1992 Toyota 4Runner

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Hi my name is andre. my heater doesnt work and has been disconnected before i bought it,i have connected the pipes again but the water is running into the inside of the car,any idea what causes this or...


  • I can tell you how it works.

  • Antifreeze circulates through one side of the heater core and out of the other. The blower blows on the heater core and creates heat. When the heater core cracks some people opt to not fix it and not deal with replacing it. That's what is happening in your 4Runner. Antifreeze is leaking through the cracked heater core and spilling onto your floorboard, probably more on the passenger side. Until you fix this you may want to remove the hoses and put it back how it was because you are going to continually running your coolant system out of antifreeze.


  • If you have not removed the dash before then pay attention as you remove the wiring when removing it. The replacement of the heater core is a piece of cake... after you get the dash out.

  • Hope this helps and thank you for using FixYa.

Regards, Tony

Jul 27, 2011 | 1992 Toyota 4Runner

1 Answer

How can i get the heater core out of my 2006 toyota corolla


Hello, 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 a lot 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

Thanks

Aug 12, 2010 | Toyota Corolla Cars & Trucks

1 Answer

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).

Aug 02, 2010 | 1995 Toyota 4Runner

1 Answer

Where is my heater fan relay located on my 92 Toyota 4runner?


where is the heater \ blower fuse located on a toyota 4runner 1992?

Jan 10, 2010 | 1992 Toyota 4Runner

2 Answers

Water leak under the intake manifold,1995 toyota 4 runner


There is a heater core bypass pipe that runs from the block (under the manifold) to the bacl of theengine where you will see a flat rectangular "sheet metal" thing with a pipe coming out of it. The a rubber hose connects. You need to pull the top air plenums and intake to get to it. The p[ipe flange bolts to the block with silicone rtv as a sealant.

Nov 12, 2009 | 1995 Toyota 4Runner

2 Answers

My heater air smelled sweet now heater not


You have a heater core leaking.The whole dash has to come out to replace the heater core.This is antifreeze you are smelling.

Oct 21, 2009 | 1996 Toyota 4Runner

1 Answer

Heater core


The heater core is located in the heater box. To get to the heater box you must first remove the dash. Then remove the heater box from the firewall. Then seperate the box to get to heater core. Good luck.

Jun 07, 2009 | 1999 Toyota 4Runner

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