Question about 1995 Toyota Previa

1 Answer

I need to replace the heatercore - 1995 Toyota Previa

Posted by Anonymous on

1 Answer

  • Level 3:

    An expert who has achieved level 3 by getting 1000 points

    All-Star:

    An expert that got 10 achievements.

    MVP:

    An expert that got 5 achievements.

    Vice President:

    An expert whose answer got voted for 100 times.

  • Master
  • 359 Answers

If you are going to attempt this you need to be at least somewhat mechanical and not be afraid to make some minor modifications in order to avoid a whole lot of unnecessary work.

I am assuming that you are familiar with your vehicle and will know what I am talking about as we go along. So here we go! Remove the side cover from the right side of the HVAC box on the floorboard under the center of the dash. It is the big black plastic console under the center of the dash up against the firewall. You'll be able to see the heater core once you remove the side cover. It is copper or brass in color and has two tubes running through the firewall into the engine compartment. You cannot remove it as easily as it looks because the control linkage is in the way. The pipes running through the firewall block it from being able to slide out and the glove box hangs down and obstructs it from sliding out more than a couple of inches anyway.

Here's what you do: Disconnect the bottom hose from the heater core on the other side of the firewall. Antifreeze will start to pour out as soon as you remove the hose so have a bucket ready to catch it. Now disconnect the top hose and use a garden hose to flush out the heater core through the top pipe. Once the water runs clear you can turn off the hose and move on. You do this in the event that any fluid spills inside of the van later. Antifreeze is sticky, it stains auto carpeting and it has an odor to it as well.

Now back inside of the van remove the control rod and the linkage plate that blocks the heater core from sliding out of the HVAC box and remove the pipe clamp that holds the pipes in place. If there is any water left in the heater core you will most likely need an empty bowl for the next step. Take a Dremel (or other rotary tool) and using a metal cut off wheel cut the pipes off of the heater core about 1 1/2" out from the side. Once that is done remove the cut off pipe pieces and throw them in your recycling bin. At this point you still can't slide the heater core out because the glove box is in the way.

Here's how move forward: Remove the glove box lid and then remove the two bolts at the back. There is an electronic control module behind the glove box that the bolts went into. It will most likely slide down after it is unbolted. Next use a small flat screw driver to remove the right corner piece, which is part of the vent system and just pops out if you do it right. Next there are two screws located just under the bottom lip of the dash that hold the front of the glove box to the dash. You'll need a stubby Philips screwdriver to get them out and will most likely need to lay upside down on the floorboard to unscrew them properly.

This is not for the faint of heart now. Take your Dremel in hand and cut the interior of your glove box in half horizontally, which is pretty much right at the middle of the two bolt holes in the back. Cut the glove box from where it hits the dash on the left around the back to the part that you popped out earlier and then on the other side to the dash. Next pull out the bottom part. You might have to twist it a bit to get it out.

Don't worry you can pop it back into place later and the bolt in the back and the screws in the front will support it and all you'll need to do is run some black duct tape or Gorilla Tape around the cut. You can't see it and if you are so anal that you stand the thought of your glove box being less than pristine then you need to go and pay the $800.00 to $1,200.00 to have this job done.

Now with all of this done all you have to do is slide the heater core out. To replace it you need to buy about three feet of 3/4 inch heater hose and four appropriate size hose clamps. Obviously you'll need the new heater core as well. When you have these things take your nice shiny and new $175.00 heater core and cut the pipes off of it with your Dremel leaving about 1 1/2" of straight pipe at the side. By the way Kragens Auto (AKA Schuck's or Checker Auto) can get you a heater core for $126.85.
Now use a grinding bit or a deburring bit or sandpaper to smooth the cut pipe edges out. Install the new heater core by simply sliding it in place making sure you move the flap that you'll see in the slot back. Now all you have to do is run heater hose through the rubber grommet in the firewall to the heater core. I used some epoxy inside of the hose ends to insure a good seal and cinched them down with hose clamps.

Hook the hoses up on the other side and then reattach the linkage you disconnected earlier and cut the side cover from the HVAC unit with your Dremel in order to fit the new hose routing. I cut it just above the edge where it turns up. That way it protects the hose ends from getting kicked by your passenger. Then install your glove box, screw and bolt it in place, tape the cut you made in it and check your coolant level after you start and warm up the vehicle enough to run the heater.

If you ever have to replace the heater core again it will take you about 45 minutes to an hour tops.

Posted on Mar 15, 2011

1 Suggested Answer

6ya6ya
  • 2 Answers

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

Hi,
a 6ya expert can help you resolve that issue over the phone in a minute or two.
best thing about this new service is that you are never placed on hold and get to talk to real repairmen in the US.
the service is completely free and covers almost anything you can think of (from cars to computers, handyman, and even drones).
click here to download the app (for users in the US for now) and get all the help you need.
goodluck!

Posted on Jan 02, 2017

Add Your Answer

Uploading: 0%

my-video-file.mp4

Complete. Click "Add" to insert your video. Add

×

Loading...
Loading...

Related Questions:

1 Answer

1994 buick lesabera heatercore replacement


You can watch the video of the job on a 1995 which is the same.

Nov 04, 2012 | Cars & Trucks

1 Answer

Disconnected the heatercore to my 1990 cadillac deville, would I have any problems if i don't replace it. I have re-routed so it bypass the heatercore?


no problems, you are living the savage life of a jeep owner. those cores go out in about 6 months and everyone just sticks a short pipe in its place. get some insulated boots for winter, you will need one of those little hairdryers to plug in the lighter in socket order to defrost the windows

Sep 06, 2011 | 1994 Cadillac DeVille

1 Answer

My husband just replaced the thermastat due to very little heat, still no more heat, theres very little heat & none if I turn the fan up, the fan seams to cool the heat what little there is.


there maybe air in the vswystem or you may need a new heatercore try fulsh the air out take the hoses off the heatercore and run water threw it with a garden hose.goodluck

Jan 17, 2011 | GMC Jimmy Cars & Trucks

2 Answers

Heatercore ,windsheil fogs up,losing antifreeze.


You have a leak in the heater core and it needs to be replaced.

Dec 08, 2009 | 1995 Dodge Intrepid

1 Answer

Har heatercore replaced heater blows its just not


1. Low on coolant
2. Air in cooling system
3. Clogged or broken valve leading to core

Dec 03, 2009 | 2001 Ford Taurus

1 Answer

Can't find the second coolant temperature sensor on 1995 volvo 960


one is located on thermostant housing, the other one is locatad in heatercore assembly, but why would you be replacing the one in heatercore asm?

Nov 28, 2009 | 1995 Volvo 960

1 Answer

I have an audi a4 avant the temp guage is normal but the heater is blowing cold air can you help


common problem, heatercore needs cleaning, remove both hoses going to heatercore and run water through one hose at a time, for about 30 seconds,use water hose with a nozel spray with hose fully open , many places would just sell you a heatercore which would cost about $1000.00 when all it needs is a backflush,( cleaning) good luck, hope this helps.

Oct 29, 2009 | 1996 Audi A4

1 Answer

Heater wont work


it sounds like your heatercore is cracked dose the windscreen fog up when on demist if so you need to replace the heatercore

Jun 10, 2009 | Hyundai Excel Cars & Trucks

1 Answer

Replacement of heatercore


I believe you have to dissassemble the lower part of the hvac unit under the dash to gain access to the heater core, then disconnect the hoses at the firewall and remove the heater core.

Apr 13, 2009 | 1996 Buick Skylark

Not finding what you are looking for?
1995 Toyota Previa Logo

242 people viewed this question

Ask a Question

Usually answered in minutes!

Top Toyota Experts

yadayada
yadayada

Level 3 Expert

74896 Answers

Colin Stickland
Colin Stickland

Level 3 Expert

22095 Answers

Jeff Turcotte
Jeff Turcotte

Level 3 Expert

7688 Answers

Are you a Toyota Expert? Answer questions, earn points and help others

Answer questions

Manuals & User Guides

Loading...