flushing heater core - DodgeForum.com

Go Back  DodgeForum.com > Dodge Trucks > Dodge Ram > 2nd Gen Ram Tech
Reload this Page > flushing heater core
Notices
2nd Gen Ram Tech 1994-2001 Rams: This section is for TECHNICAL discussions only, that involve the 1994 through 2001 Rams. For any non-tech discussions, please direct your attention to the "General discussion/NON-tech" sub sections.

flushing heater core

Reply

 
 
  #1  
Old 01-22-2011, 10:29 AM
Big Guz
Big Guz is offline
Registered User
Thread Starter
Join Date: Jan 2011
Location: IN
Posts: 34
Arrow flushing heater core

OK gonna flush the heater core today to try to get some heat. what direction should I flush it? Does it matter? Also thinking about running some CLR through it. Anyone done this before got any tips?
Thanks
 
Reply With Quote
  #2  
Old 01-22-2011, 10:49 AM
HeyYou's Avatar
HeyYou
HeyYou is offline
Super Moderator
Join Date: Apr 2010
Location: Clayton MI
Posts: 43,429
Default

CLR does horrible things to aluminum...... don't really recommend that. Just give it a try with straight water first.

coolant (heatant?) flows from the hose at the intake manifold, thru the core, and then back into the water pump via the hose to the steel pipe that plugs in to it by the power steering pump. Flush in the REVERSE direction first, and then the other way. Go both directions a couple times, ending in the reverse direction. Then, put the hoses back on, trying to lose as little coolant as possible. Run the engine, burp the system, and see how it feels.
 
Reply With Quote
  #3  
Old 01-22-2011, 10:53 AM
Big Guz
Big Guz is offline
Registered User
Thread Starter
Join Date: Jan 2011
Location: IN
Posts: 34
Default

what do you mean burp the system? I know to get air out but how do I do it
 
Reply With Quote
  #4  
Old 01-22-2011, 10:57 AM
HeyYou's Avatar
HeyYou
HeyYou is offline
Super Moderator
Join Date: Apr 2010
Location: Clayton MI
Posts: 43,429
Default

Park at as severe and angle as you can find, (without worrying about your truck rolling over down the hilll......) that elevates the passenger front corner of the truck, just let it run with the radiator cap off for a little while, until the thermostat cycles at least twice. Top off the coolant, put the cap back on, drive it away.

Never Never Never take the radiator cap off when the coolant is hot, and the system is under pressure. You will get a very rude surprise, and a complimentary trip to the ER.
 
Reply With Quote
  #5  
Old 01-22-2011, 10:59 AM
Big Guz
Big Guz is offline
Registered User
Thread Starter
Join Date: Jan 2011
Location: IN
Posts: 34
Default

Didn't know I could run it with the cap off. you sure?
 
Reply With Quote
  #6  
Old 01-22-2011, 11:05 AM
HeyYou's Avatar
HeyYou
HeyYou is offline
Super Moderator
Join Date: Apr 2010
Location: Clayton MI
Posts: 43,429
Default

Yep. I drove mine with the cap loose to the hill I wanted to use. (less than three miles)
 
Reply With Quote
  #7  
Old 01-22-2011, 03:44 PM
UnregisteredUser's Avatar
UnregisteredUser
UnregisteredUser is offline
Grand Champion
Join Date: Apr 2010
Location: Meeker, CO
Posts: 5,010
Default

It's just fine to run with the cap off unless you're heavily loading the engine.
 
Reply With Quote
 
 
 

Related Topics
Thread
Thread Starter
Forum
Replies
Last Post
garyinexcess
3rd Gen Dakota
4
10-06-2015 08:23 PM
azcromntic
2nd Gen Durango
1
09-30-2015 06:13 PM
garyinexcess
3rd Gen Dakota general discussion
0
09-29-2015 01:16 AM
dustin6119
Dodge Charger
0
09-26-2015 02:27 AM
tgrim1
Dodge Stratus
0
09-24-2015 06:51 PM

Thread Tools
Search this Thread
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

Forum Jump

Featured Sponsors

All times are GMT -4. The time now is 02:45 PM.