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Can i still run my truck if heater core is bad and i remove the fuse from heater

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Disconnect hoses from core and put a piece of copper between them with hose clamps. you wont have heat but you can drive it

Posted on Dec 01, 2012


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Posted on Jan 02, 2017

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SOURCE: Leaking heater core

Yup, I've done the same thing before. You have to just find a tube of some sort that is small enough to fit inside the hose's going to and from the heater core. Remove both hoses from the heater core, insert the tube into the hoses and put some clamps on both sides nice and tight! Good luck

Posted on Dec 30, 2008

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SOURCE: Can't find heater core 97' F150 XLT

behind glove box on passenger side.

Posted on Jan 26, 2009

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SOURCE: removal instructions for heater core

First disconnect steering knucke under dash. Remove dash assembly to reveal heater/AC case. Disconnect heater hoses from engine compartment. Discharge and capture AC refrigerant. Remove heater case ,replace heater core . re-assemble .

Posted on Apr 28, 2010

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SOURCE: bad heater core

If it does not have air conditioning you can pull the heater core out through the glove compartment. But it sounds like you do have air conditioning and the bad news this is about a 3 to 5 hour job. Remove all the screws by the windshield remove the screws are bolts below the speakers that attaches the dash to the door post if it has a console remove that. The dash and console do not actually have to be removed but pulled way out of the way. In the engine compartment disconnect the aie conditioning hoses to the heater box. You will need a special tool for this that removes the round springer or pushes it back or out of way, then pull the hose loose. There's also a bolt or two that needs to be removed in this area. Also removed the glove box, you will be able to see better there's also a bolt or two holding the heater box up. Be careful not to damage any wires or vacuum hoses. Good luck.

Posted on Jun 22, 2010

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SOURCE: Smells like antifreeze inside the

sounds very much like a heater core problem. I replaced one in less than an hour for about $40.

Posted on Sep 28, 2011

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Heater in my 2009 Toyota 4Runner id not blowing hot air

its either your heater fuse or your heater core. check your manual and check the fuse first

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No air or heat comes out

I assume your referring to your heater? Could be a few things. Bad blower motor, bad switch, blown fuse. Heat wont come out if the fan don't run. Now you can always verify that your getting heat to the heater core by feeling the two hoses that run to the firewall and make sure both are hot. If on is lukewarm or cold, than your heater core is plugged or your selector valve is not opening.

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1999 ford Expedition heater core removal

If the hose is leaking at heater hose,maybe heater core is bad,here's a repair guide to the heater core and hose.

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Where is the heater core located on a 1994 chevy corsica?

the heater core for this vehicles located behind the glove box on passenger order to remove it,you will need to be mechanically inclined.are you?do you have the tools to do so?8mm sockets and ratchet? you will need patience! if not,i recommend you ask your mechanic to replace it. but 1st i will ask these questions. is it the heater core? is fluid leaking onto the passenger side floorboard? that's one sign of a bad heater core. no heat? have you checked the fluid level in your radiator? does your cooling fan come on when the engine's at operating temperature? if not, then it may be a bad temperature sensor at the radiator. it may also be a bad fan relay in the main fuse box under the hood in the main fuse box[black box w/lid under the hood.lift the cover off of it and under the lid,it tells you fuse and the relay locations.if you turn your a/c on and the fan comes on,and does'nt come on when the engine gets hot,the fan sensor may be bad.the fan sensor that tells the fan to come on when the engines running hot. thank you,for choosing fixya,com!

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2 Answers

Why is it blowing cold air all the time sometimes if i turn the power down it blows a little bit warm but not much

Hi, it sounds like you flow is restricted, probably due to clogging of the heater core. You can try back-flushing the core by removing the heater hoses on the engine side and attaching a garden hose to the lower heater core port using a bit of hose and some clamps. Run the hose to flush out the core. If flow is good, replace the hoses. If not, you may need a new core. Please let us know if you have more questions, and thanks for using FixYa.

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1 Answer

Bad heater core

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.

Jan 09, 2011 | 1993 Saturn SL1

1 Answer

Heater wont warm up in a 2000 chev tahoe

Check that the heater core's two tubes that enter the firewall are getting hot. If they are, then you are having a blend door problem which will require disassembling the dashboard instruments to get at the vacuum motors that control the blend doors.

If the heater core is not getting hot at both tubes, then the following procedure outlines how to change the heater core out:

Removal & Installation

Heater core removal

To Remove:

  1. Remove the HVAC assembly.
  2. Remove the heater core cover screws.
  3. Remove the heater core cover from the HVAC assembly.
  4. Remove the heater core gasket from the core.
  5. Remove the heater core from the HVAC module assembly.

To Install:

  1. Install the heater core to the HVAC module assembly.
  2. Install the heater core cowl gasket to the HVAC module assembly.
  3. Install the heater core cover and screws to the HVAC module assembly.
  4. Install the HVAC module assembly to the vehicle.

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Oct 29, 2010 | 2000 Chevrolet Tahoe

1 Answer

No heat is there a fuse 2003 f250 is there a fuse for heater

i don't know realy if there is a fuse (though i doubt it) but issues with heatting may be this will help.

If the carpet under the heater core is damp, or if antifreeze vapor or steam is coming through the vents, the heater core is leaking.
Remove it and install a new unit (most radiator shops will not repair a leaking heater core.
If the air coming out of the heater vents isn't hot, the problem could stem from any of the following causes:
  • The thermostat is stuck open, previnting the engine coolant from warming enough to carry heat to the heater core. Replace the thermostat.
  • There is a blockage in the system, Preventing the flow of coolant through heater core. Feel both heater hoses the firewall. They should be hot.if one of them is cold, there is an obstruction in one of the hoses or in the heater core,or the heater control valve is shut. Detach the hoses and back flush the heater core with a water hose. If the heater core is clear but circulation is impeded, remove the two hoses and flush them out with a water hose.
  • If flushing fails to remove the blockage from the heater core, the coremust replaced.

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1 Answer

2000 Jeep wrangler is blowing lukewarm heat, is this a bad heater core? or could the heater core be plugged? if plugged how do I unplug it? and if bad how do I replace it?

If you have a heater control valve on the hoses going into the heater, make sure it's working. Heater core can be plugged, most times they can be cleared by removing the hoses to it (not at the's too easy to break the core extensions) drain it and fill it up with white vinegar.(keep the hoses higher than the core) Leave it sit about a half hour and run a garden hose through it. Last but not uncommon is that a vacuum motor that operates a door inside the heater plenum can be bad or the door itself can jam. To remove the heater to service either the core or any of the doors etc is generally a large job that you would need to get a manual for. (most of dash needs to come apart) Hope you find the problem before it comes to that!
Good luck

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1 Answer

Leaking heater core

Yup, I've done the same thing before. You have to just find a tube of some sort that is small enough to fit inside the hose's going to and from the heater core. Remove both hoses from the heater core, insert the tube into the hoses and put some clamps on both sides nice and tight! Good luck

Dec 30, 2008 | 1999 Ford F150 Regular Cab

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