Go Back   DodgeForum.com > Dodge Trucks > Dodge Ram > 2nd Gen Ram Tech
Sign in using an external account
Register Forgot Password?


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.

Getting ALL the Air Out Of Coolant System

Reply
 
 
 
 
Thread Tools Search this Thread
  #1  
Old 11-01-2010, 10:59 AM
audiomechanic audiomechanic is offline
Captain
Garage is empty, add now
 
Join Date: Nov 2007
Location:
Posts: 597
Default Getting ALL the Air Out Of Coolant System

Just replaced my radiator and filled the system. Can't seem to get all the air out of the coolant because I can hear the slight sound of bubbles flowing through the heater core. It's annoying.

How do I get all the air out?
This ad is not displayed to registered and logged-in members.
Register your free account today and become a member on Dodge Forums!
Reply With Quote
  #2  
Old 11-01-2010, 11:11 AM
HeyYou's Avatar
HeyYou HeyYou is offline
Section Moderator
Dodge Forum Moderator
Garage is empty, add now
 
Join Date: Apr 2010
Vehicle: 1996 Dodge Ram 2500
Location: Adrian, MI
Posts: 32,167
Default

Start with a cold engine. Remove the radiator cap. Start the engine, and let it warm up. Having the truck parked facing uphill sometimes helps too..... when the thermostat cycles, first it will push coolant OUT of the fill....... then it will suck it back down. There is a neat tool for this, that is basically a funnel that attaches to the radiator neck, so you aren't blowing coolant everywhere....... when the funnel gets on toward empty, add some more........ let the thermostat cycle several times, and it 'should' get all the air out.
Reply With Quote
  #3  
Old 11-01-2010, 11:28 AM
audiomechanic audiomechanic is offline
Captain
Garage is empty, add now
 
Join Date: Nov 2007
Location:
Posts: 597
Default

Thanks! I've heard CV boots work well for that as well. Too bad I don't have either laying around. :/

Will buy one of them fancy funnel doodads.
Reply With Quote
  #4  
Old 11-04-2010, 09:02 AM
audiomechanic audiomechanic is offline
Captain
Garage is empty, add now
 
Join Date: Nov 2007
Location:
Posts: 597
Default

Welp, did what you suggested and it worked!.....for about a day and then the sloshing sound came back from the heater core. I had the truck idling in the drive way yesterday and saw liquid dripping down under the truck at a pretty good rate. I thought to myself, "it's just condensation on the AC dryer." Then I remembered, the AC wasn't on. Upon closed inspection, it seems coolant is leaking from the water pump gasket or behind that. The water pump is only about 10,000 miles old so I don't know why it would be leaking. But it makes sense that this leak showed it's ugly face after replacing the radiator since the radiator could not hold pressure before. Now the new one can and so that exposes another weak-link in the coolant system.

Ugh, two years I've owned this truck and I've always had to add coolant. Thought I finally replaced the last piece of the cooling system puzzle. I suppose not.

Gonna replace the water pump again, and check the timing chain this time while I'm back there.

Any tips?
__________________
'99 Ram RCSB 1/2-ton 4X4 360 Auto
Reply With Quote
  #5  
Old 11-04-2010, 09:36 AM
drewactual's Avatar
drewactual drewactual is offline
Champion
2002 Dodge Ram 1500
 
Join Date: Aug 2010
Vehicle: '02 1500 5.9L Magnum
Location: Cape Carteret NC
Posts: 2,694
Default

it's a great time to consider an e-fan...

one of the little bonuses while having one is eliminating a lot of stress on the WP.. Meaning, the clutch fan will be removed and the shaft that comes out of the WP won't have that heavy rascal dangling off of it, and wearing down the seals on the shaft.. which theoretically means: longer life for the pump...
Reply With Quote
  #6  
Old 11-04-2010, 09:51 AM
sungod sungod is offline
Veteran
1998 Dodge Ram 2500
 
Join Date: Jun 2008
Vehicle: 1998 Ram 2500 4x4
Location: Fairfax VA
Posts: 389
Default

I have the same issue and have found zero success. Theoretically you should push the air out and it should remained trapped in the top of the radiator since it pulls the cool liquid in from the bottom. The funnel is good for filling your cooling system, but I can still hear the the gurgle when I start my truck. Obviously it is pushing the air through the core, but who knows where it goes from there.
Reply With Quote
  #7  
Old 11-04-2010, 10:04 AM
slider15004x4 slider15004x4 is offline
Veteran
Garage is empty, add now
 
Join Date: Sep 2010
Vehicle: 1996 Ram 1500 4x4
Location: Camp Hill, PA
Posts: 269
Default

I have the same problem, plus the air seems to get trapped in the heater core until I start driving it and then the heat gradually gets up to temperature.
__________________

1996 Dodge Ram 1500 4x4, 5.9L, 14x3, Flowmaster Super 40, TGC 3" lift, Python 991 alarm, Scan Gauge 2, 136A Alternator
Reply With Quote
  #8  
Old 11-04-2010, 10:08 AM
audiomechanic audiomechanic is offline
Captain
Garage is empty, add now
 
Join Date: Nov 2007
Location:
Posts: 597
Default

Quote:
Originally Posted by drewactual View Post
it's a great time to consider an e-fan...

one of the little bonuses while having one is eliminating a lot of stress on the WP.. Meaning, the clutch fan will be removed and the shaft that comes out of the WP won't have that heavy rascal dangling off of it, and wearing down the seals on the shaft.. which theoretically means: longer life for the pump...
I would, but money is an issue. Lot cheaper to do a fan clutch than an e-fan.

It is on the future mod list though!
Reply With Quote
  #9  
Old 11-05-2010, 08:57 AM
charlie1935's Avatar
charlie1935 charlie1935 is offline
Record Breaker
Garage is empty, add now
 
Join Date: Mar 2004
Vehicle: 96 Ram standard cab, short bed, 318 auto. tranny. 87 D100, long bed, 318 auto. 87 5th Ave. 318.
Location: DuQuoin,IL.
Posts: 1,952
Default

Check closely. It could be the timing cover gasket.
__________________
Grandpas like toys too
Calling an illegal alien an 'undocumented immigrant' is like calling a drug dealer an 'unlicensed pharmacist'
Reply With Quote
  #10  
Old 11-05-2010, 09:12 AM
zman17's Avatar
zman17 zman17 is offline
Section Moderator
Dodge Forum Moderator
2000 Dodge Ram 2500
 
Join Date: May 2008
Vehicle: 2000 2500HD 4x4 5.9
Location: NH
Posts: 18,729
Default

I'll bet it is too. A lot of times when the WP is replaced the timing cover gasket gets damaged because there are almost no bolts holding it. So when you wrap the WP loose,the TC gasket gets torn. Could be the bypass hose too however.


edit: This happened on my 98, I was lucky enough to be able to retighten all the bolts and the leak stopped.
__________________
2000 2500HD 4X4 5.9 and 4:10's,HF tuned SCT,Red-Head gear box, HS 1.7's,
50mm Fastman TB, Hughes Plate,2" Hell Bent ,Volant CAI
Flowmaster 50 series, Rock Solid Ram Steering fix,B&M trans cooler,fuzzy dice good for 5HP
Reply With Quote
Old 11-05-2010, 09:12 AM
 
 
 
Reply




Thread Tools Search this Thread
Search this Thread:

Advanced Search

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

Join DodgeForum
Advertising

Featured Sponsors
Vendor Directory
Our Sponsors
All times are GMT -4. The time now is 05:46 AM.

Internet Brands, Inc.


Contact Details & Emails