Radiator hoses 1 Hot 1 Cold Help - Jeep Garage - Jeep Forum

Go Back   Jeep Garage - Jeep Forum > Jeep Platform Discussion > Grand Cherokee - WJ

Reply
 
Thread Tools Display Modes
 
  #1  
Old 10-05-2014, 10:00 PM
mustanghd's Avatar
New Member
My Jeep: 1999 4.7L WJ
 
Join Date: Jan 2012
Location: Winona Minnesota
Posts: 4
Thanks: 0
Thanked 0 Times in 0 Posts
Rep Power: 0
mustanghd is on a distinguished road
Radiator hoses 1 Hot 1 Cold Help

I have a 99 WJ 4.7 I just drained the radiator today and had to pull off the lower radiator hose to drain it. I refilled it and removed the bleed plug to purge the air out. Start the jeep and take it for a ride ,temp goes up to 210 which is normal so I try the heat, that works great so I think everything is ok. I get home and pop the hood and feel the hoses ,the upper hose is very hot and the lower hose is cold. The radiator cap is also cold but like I said there was great heat and both of those hoses were also very hot. Could it be possible that I have trapped air in the lower hose near the thermostat or do you think that a thermostat felt it was being neglected and wanted to be changed also. I should also mention that I was able to take the radiator cap off and poke my finger in the antifreeze and it also was not hot just warm. Thanks

Reply With Quote
Sponsored Links
Advertisement
 
  #2  
Old 10-05-2014, 10:19 PM
Frango100's Avatar
The beast from Brazil

My Jeep: 2004 4.7L WJ
 
Join Date: Dec 2009
Location: Brazil
Posts: 7,613
Thanks: 23
Thanked 423 Times in 408 Posts
Rep Power: 529931
Frango100 has a reputation beyond reputeFrango100 has a reputation beyond reputeFrango100 has a reputation beyond reputeFrango100 has a reputation beyond reputeFrango100 has a reputation beyond reputeFrango100 has a reputation beyond reputeFrango100 has a reputation beyond reputeFrango100 has a reputation beyond reputeFrango100 has a reputation beyond reputeFrango100 has a reputation beyond reputeFrango100 has a reputation beyond repute
Re: Radiator hoses 1 Hot 1 Cold Help

How far did you drive? As long as the coolant temperature of the coolant which circulates the engine is within limits, i would not bother. You probably didn´t drive enough to have the thermostat to open. Or it opened just a bit, so that the hot coolant entered via the upper radiator hose, but the airflow through the radiator cooled the coolant that much, that it is much lower in temperature and didn´t heat the lower hose. But as said, as long as the engine coolant temperature is normal, you should be fine.
__________________
Frank

JEEP Grand Cherokee 4.7 Lmtd 2004
HID 8000K in low and fog / Quad Squad member
KYB Gas-a-Just shocks / Pirelli Scorpion ATR 245/65/17 - Transgo reprogramming shiftkit.

VW Beetle 2.0 TSI 2013
My new toy
Reply With Quote
  #3  
Old 10-06-2014, 08:16 PM
mustanghd's Avatar
New Member
My Jeep: 1999 4.7L WJ
 
Join Date: Jan 2012
Location: Winona Minnesota
Posts: 4
Thanks: 0
Thanked 0 Times in 0 Posts
Rep Power: 0
mustanghd is on a distinguished road
Re: Radiator hoses 1 Hot 1 Cold Help

Well when I got home from work today I popped the hood to check the anti freeze and it was right at the top of the radiator fill spout. I decided to take the Grand for a 30 mile drive and fill it up with gas, I let it idle the whole time I was filling it and then drove back home. When I got home I popped the hood and the radiator cap was still cold and the lower hose was just warm , the temp never went over 200 so I am guessing that everything is ok and I will just drive it and keep an eye on the temp and overflow tank.
Reply With Quote
Sponsored Links
Advertisement
 
  #4  
Old 10-09-2014, 09:40 AM
Member
 
Join Date: Sep 2014
Posts: 9
Thanks: 1
Thanked 0 Times in 0 Posts
Rep Power: 1036
diggsbakes is on a distinguished road
Re: Radiator hoses 1 Hot 1 Cold Help

I had something similar happen to my '99. Don't wanna scare you or blow it out of proportion, but soon after we replaced the engine, the 4.7L.

The temp gauge was reading normal and it overheated on the highway, we had just bought it used and the dealer agreed to replace engine, so we never did get a good explanation. I'd pay $20 and take it in for a diagnostic and tell them what's going on. Probably as simple as a thermostat. Some do not work correctly brand new.
Reply With Quote
  #5  
Old 10-11-2014, 01:48 PM
hoffmanestates's Avatar
Senior Member
 
Join Date: Nov 2011
Posts: 1,281
Thanks: 59
Thanked 12 Times in 12 Posts
Rep Power: 3912
hoffmanestates has a reputation beyond reputehoffmanestates has a reputation beyond reputehoffmanestates has a reputation beyond reputehoffmanestates has a reputation beyond reputehoffmanestates has a reputation beyond reputehoffmanestates has a reputation beyond reputehoffmanestates has a reputation beyond reputehoffmanestates has a reputation beyond reputehoffmanestates has a reputation beyond reputehoffmanestates has a reputation beyond reputehoffmanestates has a reputation beyond repute
Re: Radiator hoses 1 Hot 1 Cold Help

With the 4.7 i am learning dont but cheap shit parts. And if an upgrade is available consider it. Like the water pump, i purchased a metal propeller water pumps vs plastic
Reply With Quote
  #6  
Old 10-11-2014, 06:10 PM
Frango100's Avatar
The beast from Brazil

My Jeep: 2004 4.7L WJ
 
Join Date: Dec 2009
Location: Brazil
Posts: 7,613
Thanks: 23
Thanked 423 Times in 408 Posts
Rep Power: 529931
Frango100 has a reputation beyond reputeFrango100 has a reputation beyond reputeFrango100 has a reputation beyond reputeFrango100 has a reputation beyond reputeFrango100 has a reputation beyond reputeFrango100 has a reputation beyond reputeFrango100 has a reputation beyond reputeFrango100 has a reputation beyond reputeFrango100 has a reputation beyond reputeFrango100 has a reputation beyond reputeFrango100 has a reputation beyond repute
Re: Radiator hoses 1 Hot 1 Cold Help

Quote:
Originally Posted by hoffmanestates View Post
With the 4.7 i am learning dont but cheap shit parts. And if an upgrade is available consider it. Like the water pump, i purchased a metal propeller water pumps vs plastic
Lets see over time if the impeller will not rot away. I saw quite some problems with internal corrosion. Changing the coolant at regular intervals should help a lot at least.
__________________
Frank

JEEP Grand Cherokee 4.7 Lmtd 2004
HID 8000K in low and fog / Quad Squad member
KYB Gas-a-Just shocks / Pirelli Scorpion ATR 245/65/17 - Transgo reprogramming shiftkit.

VW Beetle 2.0 TSI 2013
My new toy
Reply With Quote
  #7  
Old 10-11-2014, 06:19 PM
hoffmanestates's Avatar
Senior Member
 
Join Date: Nov 2011
Posts: 1,281
Thanks: 59
Thanked 12 Times in 12 Posts
Rep Power: 3912
hoffmanestates has a reputation beyond reputehoffmanestates has a reputation beyond reputehoffmanestates has a reputation beyond reputehoffmanestates has a reputation beyond reputehoffmanestates has a reputation beyond reputehoffmanestates has a reputation beyond reputehoffmanestates has a reputation beyond reputehoffmanestates has a reputation beyond reputehoffmanestates has a reputation beyond reputehoffmanestates has a reputation beyond reputehoffmanestates has a reputation beyond repute
Re: Radiator hoses 1 Hot 1 Cold Help

I flush once a year as i get it from work, its already premixed and treated
Reply With Quote
  #8  
Old 10-11-2014, 06:20 PM
hoffmanestates's Avatar
Senior Member
 
Join Date: Nov 2011
Posts: 1,281
Thanks: 59
Thanked 12 Times in 12 Posts
Rep Power: 3912
hoffmanestates has a reputation beyond reputehoffmanestates has a reputation beyond reputehoffmanestates has a reputation beyond reputehoffmanestates has a reputation beyond reputehoffmanestates has a reputation beyond reputehoffmanestates has a reputation beyond reputehoffmanestates has a reputation beyond reputehoffmanestates has a reputation beyond reputehoffmanestates has a reputation beyond reputehoffmanestates has a reputation beyond reputehoffmanestates has a reputation beyond repute
Re: Radiator hoses 1 Hot 1 Cold Help

Im not worried as i never seen a rotten water pump
Reply With Quote
Reply

Thread Tools
Display Modes

Posting Rules
You may not post new threads
You may not 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 Off
Refbacks are Off


Similar Threads
Thread Thread Starter Forum Replies Last Post
Continuous hot/cold air from floor vents connie Troubleshooting/Problems 9 12-11-2012 05:35 PM
Hot/cold air continuously coming in from floor air outlets connie Troubleshooting/Problems Discussion 0 11-28-2012 05:11 AM
Cold Air - Hot Air Jane New Members - Welcome! 4 07-02-2012 12:03 PM
Hot or Cold - Blend doors? or Resistor? JETLIFE Grand Cherokee - WK 3 03-28-2011 02:02 PM
Radiator hoses murfman Grand Cherokee SRT8 - WK 4 06-06-2010 09:36 PM

» Premium Vendor Showcase
Powered by vBadvanced CMPS v3.2.3

All times are GMT -5. The time now is 05:16 PM.


Powered by vBulletin® Version 3.8.8
Copyright ©2000 - 2017, vBulletin Solutions, Inc.
Copyright 2012 - JeepGarage.Org
The Jeep Grand Cherokee Owners Community

JeepGarage.org is in no way associated with or endorsed by FCA US LLC. Chrysler, Dodge, Jeep, Ram, Mopar and SRT are registered trademarks of FCA US LLC.