Question about 1989 Buick Regal

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Just replaced radiator and replaced heater core. light still shows on dash "check engine."

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Have the car scanned for trouble codes at parts store that offers free scan service. Autozone and Advance do this, among others. Once you have them written down, you can ask them to clear the codes. If the light comes back on within a day or 2, there is still a problem. Get back to fixya with a report on the codes and any remaining symptoms.

Posted on Sep 13, 2010

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Posted on Jan 02, 2017

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How do I change my heater core in my 1996 ford ranger


The heater core is located in the heater box, under the passenger side of the dash. Most FORD heater boxes are snap-clipped together, and if you remove the rear panel from the heater box, you will see the heater core...it looks like a smaller radiator...twist the heater hose off of the heater core (x2) from the engine side and gently remove the heater core from under the dash. When replacing the new heater core, be very careful re-installing new hoses to the core...it is a fragile thin metal that can leak almost instantly if tweaked too roughly...replace all parts in reverse order of removal.

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You have a blown engine cylinder head gasket most likely.

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Over heats, water on floor board


  • Hi, I can help.

  • Your heater core is leaking onto your floorboad. This lowers your antifreeze as well as looses pressure and your car overheats. Your in luck though, you don't have to remove the entire dash to replace the heater core. You get to this heater core by removing the glove box. Last one I did in the freezing cold took me about 1 1/2 hours. Not to bad of a job.

  • If you have any comments please feel free to leave them here.
  • Hope this helps and thank you for using FixYa.

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Aug 29, 2011 | 2000 Cadillac DeVille

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Coolent leaking from rear of engine can not see from where. When I stopped the car the fluid kept coming out. Engine overheated, I checked the front hoses they are dry and no leak from the radiator. What...


You could have a leak coming from the intake or even the heads. Before digging into those difficult items, I'd check all of your freeze plugs for damage/wear/rust/leaks.

Jun 02, 2011 | 1996 Chevrolet Corsica

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Rottenweiler630@My 84 s-10 blazer has developed a heater core leak. Where can I get the procedure for R & R of the core?


Please don't forget to rate! Thanks!

Removal & Installation

The heater core is removable from under the right side of the instrument panel.

  1. Disconnect the negative battery cable.
  2. Position a drain pan under the radiator, open the drain **** and drain the cooling system to a level below the heater core.

Plug the heater core tubes to avoid spilling coolant in the passenger compartment during removal.

  1. Disconnect the heater-to-engine coolant hoses from the core tubes on the firewall, in the engine compartment.

c17hydro_116.gif

Exploded view of a common heater core and case assembly



c17hydro_117.gif

If necessary, loosen and remove the under dash cabin light retaining bolt



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With the bolt removed, the light and housing may be repositioned out of the way


On some early model vehicles, the cabin light mounted under the dash may interfere with cover removal. If necessary, loosen the retaining bolt and reposition the light housing with the wiring attached.

  1. From the passenger compartment (under the dash) remove the heater core rear case cover-to-cowl screws, then remove the cover from the vehicle.

Be sure that all are removed before attempting to remove the cover. If necessary, unbolt and reposition all/part of the dashboard for better access.

  1. Remove the straps or brackets from each end of the heater core.
  2. Carefully remove the heater core from the cowl and case.

To install:

  1. Insert the heater core into the case, taking care not to damage the tubes as they are inserted through the cowl.
  2. Install the straps or brackets to the ends of the heater core and secure using the retaining screws.
  3. Install the heater core rear case cover and secure using the retaining screws.
  4. If moved for access, reposition and secure the dash mounted cabin light and housing.
  5. Connect the heater-to-engine coolant hoses to the core tubes.
  6. Connect the negative battery cable, then properly refill the engine cooling system.
  7. Run the engine at normal operating temperatures and check for leaks.

There is a bunch of pictures to post so please keep refreshing your page. This is gonna take a few minutes...

Jan 21, 2011 | 1984 Chevrolet S-10

1 Answer

The fan is on and the heat is turned on just not getting hot


You should check a few things here.

Check the hoses going into the heater core from the back of teh engine (underneath the throttle body).

Check the Thermostat guage and make sure it is not faulty.

Replace the coolant in your car. (undo the plug at the bottom of the radiator and let the fluid drain out) Once drained close the plug and then fill it back up with approved coolant)

Run the car until hot (about 15 mins and then see if there is any hot air coming out)

Bad news will be if your heater core is busted. You shouldn;t wait too long to check this out as a busted heated core (clogged) will eventuallu force the seals open and you will get coolant leaking into your car.

If it is your heater core these are steps i followed to replace mine:

Disconnect the negative battery terminal.

Disconnect the top and bottom hoses from the heater core next to the firewall)

Pull off the steering wheel
Undo the steering wheel bolt.
Undo the 3 screws holding the steering wheel cover in place, unclick them and put to the side.
Undo the centre console
Undo the glove box - you'll need to manipulate the stops on the inside and let it fall to the floor before - undo the two bolts at the bottom.
Remove the Instrument panel, radio, radio frame.
Undo the single screw in the bottom of the casing surrounding the vents control, gently pop out the vent plate.
Undo the 4 screws holding the vents controls in place.
Remove the frames that are holding the vent controls in place (either side of the centre colsoles (or where they were)
Remove the two side vents (push down and pull back).
Remove the two bolts (either side) that are holding the dash up.
Remove the two bolts (bottom left corner, bottom right corner) that are holding the dash up.
Gently pull the dash up and forward to (making sure you don't pull any wires off there guides and place to the side).

Put the dash to the side (resting on the front seat)

The heater core should be sitting in the middle of the dash.

Remove the four bolts (two top, two bottom) and place to the side.

Pull the heater core back and move to the side to clear the holes in the firewall.

Manipulate the heater core to the side and move out through the gap in the dash and the cross bar (it is a tight squeeze but you can get it out)

Installation is the reverse of all the instructions.

when you have finished installing the heater core make sure you bleed the engine with coolant

Top up the radiator - keep the cap off, turn on the engine, turn on the heater on the heater to full, with the engine running keep topping up the radiator as the water runs through the new core...keep doing this until no more water goes through - this last step takes a while so be patient otherwise you will start to drive the car and will have an overheating engine very quickly...

Feb 07, 2010 | 2004 Mitsubishi Lancer

1 Answer

Heater takes to long to get hot and water is dripping form dashboaerd on passenger side i have a 2000 grand jeep cherokee


Sounds like one of two things are happening. Either the hose going to the heater core (on the engine side of the dash) is leaking causing coolant to spray into the passenger compartment or your heater core is leaking which is causing the dripping from the passenger side of the dash. This would also cause a loss of coolant in the engine which would cause the engine to overheat and not enough coolant to get to the heater core to supply heat to the passenger compartment. Check your coolant level (while engine is cold) and refill it with a 50/50 mix of coolant and water after you tighten the leaking hose or replace the heater core.Then start the engine and let it warm up to operating temperature. Again let it cool down and then top off the radiator with the 50/50 mix of coolant. Do not under any circumstances open the radiator cap while the engine is hot.

Nov 16, 2009 | 1999 Chevrolet Cavalier

1 Answer

Leaking Heater hose or Core


REMOVAL & INSTALLATION
Disconnect the negative battery cable.
Position a drain pan under the radiator, open the drain **** and drain the cooling system to a level below the heater core.
NOTE: Plug the heater core tubes to avoid spilling coolant in the passenger compartment during removal.


Disconnect the heater-to-engine coolant hoses from the core tubes on the fire wall, in the engine compartment.
NOTE: On some early model vehicles, the cabin light mounted under the dash may interfere with cover removal. If necessary, loosen the retaining bolt and reposition the light housing with the wiring attached.


From the passenger compartment (under the dash) remove the heater core rear case cover-to-cowl screws, then remove the cover from the vehicle.
NOTE: On a few of the early model vehicles covered by this manual, some of the heater core cover screws may be partially/fully covered by the dashboard. Be sure that all are removed before attempting to remove the cover. If necessary, unbolt and reposition all/part of the dashboard for better access.


Remove the straps or brackets from each end of the heater core.
Carefully remove the heater core from the cowl and case.
Installation is the reveres of removal. Run the engine at normal operating temperatures and check for leaks

Dec 01, 2008 | 1993 Chevrolet S-10

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Water under dash board 1983 buick skylark


Your heater core needs to be replaced. The heater core is like a mini radiator, providing heat for the interior by coolant circulating from the engine, into the heater core, and back to the engine again. Like a radiator, a heater core can spring a leak, especially w/ age as a factor. This results in the leak inside the car, which also causes the 'smoke' you see, which is actually vapor form of coolant.

Nov 17, 2008 | 1983 Buick Skylark

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