Question about 2003 Jeep Grand Cherokee

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How to replace heater core in 03 jeep grand cherokee

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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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Mikey108
  • 475 Answers

SOURCE: Heater not working

Depending on what package the Jeep came with, you could have a broken or disconnected vacuum line to the heater doors.
If it's electronic, there could be a blend door accuator not working.
There could be a bad heater control valve or just a engine thermostat that's staying open all the time.

Posted on Oct 14, 2008

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ZJLimited
  • 17970 Answers

SOURCE: how to remove heater core

Is a typical case, but we can use like a general method:
First remove all the water from your system by draining the radiator, it's best to do it this way so you can add new coolant and keep the mess to a minimum, after your water is drained, go ahead and remove the heater core feed lines.

  1. Remove top of dash pad, do this by removing several screws located under the foward lip of the pad, don't forget the screws in the defroster vent holes!
  2. Remove the lower trim panel from the underside passenger side dash ( if there is one there)
  3. Look under the dash on the passenger side and you will see the plastic box in which houses the heater core, remove all the screws that surround this box, there will be one screw on the top that will be very difficult to get at, this is why you have removed the top of the dash so you can get at it with two hands,if you need to see this screw get outside of the car and look down at the dash from the passenger side and then your going to have to depend on feeling with your hands.
  4. At this point you should have the plastic box off and now your looking directly at the heater core, the core is held in place by a steel clamp fastened with screws, remove these screws, and remove the clamp.
  5. Now it's time to remove the heater core , get some plastic sheeting and lay it around the passenger foot well because there going to be some water in the core yet, pull it out gently, you might have to wiggle and gently pull, take your time, it should come out fairly easy.
  6. Once you have the old core out, it's time to install the new one, I can't tell you how important it is at this point to be very patient when installing the new core, you may have to slightly bend the new core tubes to get them through the firewall, you may end up taking it out a couple of times BE CAREFULL!!!!!!
  7. Once you have sucessfully got the core in place, install the core clamp, then re-assemble

Make sure that after you have installed everything and you fill your system with water, slide your heat temp control to full heat the check everything for leaks!


For the specific case, Grand Cherokee, check this info, maybe the answer are in there: ZJ Secc 24 Heating and Air Conditioning (Page 41 and Next)

Good luck!!!

Posted on Oct 20, 2008

  • 45 Answers

SOURCE: Heater Core replacement

yes you do have to disconect the a/c system.google dash removal for jeep.hope this helps

Posted on Oct 04, 2009

ZJLimited
  • 17970 Answers

SOURCE: how do you install a heater core in a 1999 jeep

I suggest review the ZJSecc24-Heating-and-Air-Conditioning

First you'll need remove the heater A/C unit from the vehicle; after, remove the heater core retaining screws, and finally, pull the heatrer core straight out of the housing.

Hop helped with this (remember rated this help) Good luck.

Posted on Nov 30, 2009

wracefans24
  • 1985 Answers

SOURCE: 1996 jeep grand cherokee blower works but no heat

Since your blower is working and it is a heat issue,thats where we'll start,First thing is have you checked the coolant level in the radiator when engine is cold,make sure it is filled to top,next verify you have coolant in reserve ,Start your van and get it up to normal operation temperature,If your heat gauge on the dash works correctly it should be 190 degrees,Now lift the hood and locate the two heater hoses going into the heater assembly at the fire wall,Both hoses should be hot to hold on to,if both are hot and no heat inside your problem will be the blend air door in heater assembly.
if neither hose is that hot you need to replace the thermostat in the engine to get it up to 195 degrees.
if one hose is hot and one is luke warm then the heater core is blocked and to blame. hope this helps you.

Posted on Jan 12, 2010

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1 Answer

Flush heater core on 2000 grand cherokee


If it's clogged it can be cleared with the use of Garden hose pump. The water has to be turn into the heater hose line and then water has to be removed out via the pump.

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For complete step by step procedure, refer heater core flushing and other help links mentioned below.


======

Click the link below: -----

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How to Flush Heater Core?
http://schematicsdiagram.blogspot.com/2011/12/how-to-flush-heater-core.html
-------
Also check these link too:---

HEATER CORE REPLACEMENT, HEATER CORE REMOVAL, TROUBLESHOOT HEATER CORE, FLUSH HEATER CORE,
http://alltypesofpartsreplacing.blogspot.com/2012/12/heater-core-replacement-heater-core.html

------
These will help.
Thanks.

Dec 25, 2012 | 2000 Jeep Grand Cherokee

1 Answer

How do i replace/install a heater core for a 1999 limited edition jeep cherokee 4.0 liter 6cyclinder


I would make sure the core is the problem. You may have a heater control valve that cuts off flow to the core by vac. or a blend door that cuts off air flow thru the core.
You will need a shop manual to replace the core. The dash and console have to come out, along with discharging the ac.

Dec 18, 2012 | 1999 Jeep Grand Cherokee

1 Answer

My 99 Jeep Grand Cherokee's heater core is leaking


Here's a link on how to replace your heater core.There are two engines listed for this year,here is the link to the 4.0 engine,Here's a link to the 4.7 engine.

Dec 13, 2012 | Cars & Trucks

1 Answer

How do I replace the heater core on 1999 Jeep Grand Cherokee Laredo


if u are not a mechanic dont even try! the dash comes off the the climet control box comes offf then you open the box tahe out the heater core replace it .

Dec 01, 2012 | 1999 Jeep Grand Cherokee

1 Answer

Heater core replacement, 2000 Jeep Grand Cherokee Laredo. Why do I have to evacuate the freon?


you need to evacuate the freon because in order to get the heater core out you also need to remove the evaporator for the AC. (great design huh?)

Nov 02, 2010 | 2000 Jeep Grand Cherokee

1 Answer

How to change a heater core in a 93 jeep grand cherokee


When I turn my heater on, after my 1993 Jeep Grand Cherokee has warmed up, there is a dusty, watery smell for a few minutes, then it goes away. Also, it doesn't put out as much heat as I think it should. I don't think the heater core has a leak, because I always seem to have the same amount of coolant in the radiator and the heater core is not leaking on the inside of the truck.

Jan 26, 2010 | 1993 Jeep Grand Cherokee

1 Answer

Heater Core replacement


yes you do have to disconect the a/c system.google dash removal for jeep.hope this helps

Oct 04, 2009 | 2000 Jeep Grand Cherokee

1 Answer

Replace a heatercore in a 1997 jeep grand cherokee


REMOVAL
  1. Remove the heater-A/C unit from the vehicle. "Housing Assembly HVAC : Service and Repair" See: Heating and Air Conditioning\Housing Assembly HVAC\Service and Repair
  2. Remove the heater core retaining screws.
  3. Pull the heater core straight out of the housing.
INSTALLATION
  1. Install the heater core into the housing.
  2. Position the clips over the heater core tubes. Install and tighten the screws.
  3. Install the heater-A/C unit into the vehicle. Under "Housing Assembly HVAC : Service and Repair" See: Heating and Air Conditioning\Housing Assembly HVAC\Service and Repair

Jan 14, 2009 | 1997 Jeep Grand Cherokee

1 Answer

2000 jeep grand cherokee v8/heater core


Yes it's the heater core, It's a complicated diy job and unless you are an experienced mechanic you are going to need a good workshop manual for the job.

Best of luck.





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Oct 22, 2008 | 2000 Jeep Grand Cherokee

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