2001 Grand Cherokee No heat, can it be water pump? - JeepForum.com
LinkBack Thread Tools
post #1 of 6 Old 02-14-2012, 11:15 AM Thread Starter
Registered User
Join Date: Feb 2012
Location: Toronto
Posts: 2
2001 Grand Cherokee No heat, can it be water pump?

I have a 2001 Jeep GC with 280,000 kms; there seems to be a leak, small, at the front of the engine between the rad and the engine.

There is a noise that I am being told it's the water pump and there is no heat in the cabin.

I was told, the heat issue can be caused by the blend door but my car doesn't have dual AC/HEAT; it's the Laredo version.

Need help!.


macastro is offline  
Sponsored Links
post #2 of 6 Old 02-14-2012, 10:50 PM
Registered User
1998 ZJ 
Join Date: May 2010
Location: Northern Michigan
Posts: 82
Fix the leak first, bleed the air out, then check and see if you still don't have heat. One thing at a time.
smuggler is offline  
post #3 of 6 Old 02-14-2012, 11:05 PM
Registered User
2004 WJ 
Join Date: Feb 2011
Location: Northern
Posts: 1,117
Small leak is probably the water pump going out, unless you have a leak some where else and no heat could be worn out pump blades.
Have you took the cap off when it's cold to see how it's flowing when it starts to warm up?

04 Overland on 33's, Lift & tires= 8" over stock.
USFORCES is offline  
post #4 of 6 Old 02-15-2012, 07:49 AM
Registered User
2004 WJ 
Join Date: Sep 2011
Location: Jacksonville
Posts: 367
When you change the Water Pump, go ahead and change the Thermostat. And while going thru this, might as well drain the coolant and replace. Also do a search on "Heating core" which possibly is blocked. There are many threads on this subject. If you reverse flush the heater core and possibly use CLR to clean the heater core, then put everything back together, you will take care of your leak and probably your heating issue.

2004 Jeep Grand Cherokee Limited 2x4 4.0L
2002 Jeep Grand Cherokee Sport 2x4 4.0L
1998 Jeep Grand Cherokee Laredo 2x4 4.0L
"Three daughters, three Jeeps"
specia1k is offline  
post #5 of 6 Old 02-15-2012, 08:19 AM
Registered User
Join Date: Nov 2006
Location: Markham, Ontario
Posts: 30
With the engine full heated up the two heater hoses should be HOT with the fan on LOW. After turning the fan to HIGH the output hose should be much cooler.

If both hoses were hot then and you were not getting heat is highly likely the core is plugged and fluid is bypassing so to speak. When heat is extracted the output hose is of course cooler.

Blast water from a hose both ways through the core until it flows easily both ways. You might want to cover the engine with some plastic or such to keey the ignition and other electic connection from getting wet.

This is the simplest 1st step.

WJ Grand Cherokee 2002 4.0L
Laredo 249k km,Select Trac
Class III hitch
P245 P70/16 Nokian All Weather Plus tires
tripplec is offline  
post #6 of 6 Old 03-02-2012, 03:46 PM Thread Starter
Registered User
Join Date: Feb 2012
Location: Toronto
Posts: 2
Replaced the water pump and thermostat, all good, noises gone, leaks gone and now we have heat!! am glad I didn't take the glove box to look for the blend doors, all works fine.
macastro is offline  

Quick Reply

Register Now

In order to be able to post messages on the JeepForum.com forums, you must first register.
Please enter your desired user name, your email address and other required details in the form below.

User Name:
Please enter a password for your user account. Note that passwords are case-sensitive.


Confirm Password:
Email Address
Please enter a valid e-mail address for yourself.

Email Address:


Human Verification

In order to verify that you are a human and not a spam bot, please enter the answer into the following box below based on the instructions contained in the graphic.

Currently Active Users Viewing This Thread: 1 (0 members and 1 guests)
Thread Tools
Show Printable Version Show Printable Version
Email this Page Email this Page

Similar Threads
Thread Thread Starter Jeep Forums Replies Last Post
Will a 96 grand cherokee motor work in a 2001 grand cherokee with out major issues? blacksslumina WJ Grand Cherokee Forum 4 09-01-2011 12:56 PM
2001 Jeep Grand Cherokee Possible Oil Pump Problem? rocponee WJ Grand Cherokee Forum 4 07-05-2011 01:00 PM
I need HELP with my 2001 Grand Cherokee!!! Brittnie WJ Grand Cherokee Forum 4 07-21-2010 11:07 AM
2004 Jeep Grand Cherokee---Overheating after water pump replacement! Thoughts? Hundoracer WJ Grand Cherokee Forum 2 07-05-2010 04:22 PM
Looking to buy a 2001 Grand Cherokee 4x4 SHUG WJ Grand Cherokee Forum 2 05-14-2010 07:47 PM

Posting Rules  
You may post new threads
You may post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are Off
Pingbacks are On
Refbacks are On

For the best viewing experience please update your browser to Google Chrome