I have a 95 1500 with the 5.2. When I start it up cold I can hear some kind of fluid girgling behind the dash. When I hit the pedal it speeds up and then tapers off to a driping sound when at idle. After the truck warms up for a couple of minutes the liquid sound goes away... Any ideas?
(By the way, this is my first Dodge, and I love it!)

 

Could be a couple different things but I would bet it is an HVAC issue. 1. How is the engine temp running? It could be air in the cooling system and you hear the sloshing of coolent in the heater core. 2. The HVAC drain may be clogged and you hear water from condensation in the bottom of the box. It can be cleaned out by going through the firewall. These are my guesses.

 

You have air in the cooling system. What you hear is the water running through the heater core.

 

Can I start the truck and open the radiator till the thermostat opensto bleed out the air?

 

That's the only way to do it.

 

im having the same problem and would also like to know the best way to burp the system.

 

Here is what I do...

1. Park on some sort of incline... with the front of the truck up higher than the rear.
2. Put the heater control to full hot (the fan does not have to be blowing).
3. Remove cap.
4. Fill rad to top fins with fluid.
5. Make sure the overfill bottle is filled at least to the min marking.
6. Now start the truck...
7. Let it run with the cap off... it will eventually warm up, and the thermostat will open. Coolant will dump back into the top of the radiator. You should be able to see it. Let it run this way for a few minutes so that the air bubbles can work their way out.

You might want to have a towel nearby to catch any fluid that might be burped out of the radiator cap (did I mention you should wear eye protection too).

As an alternative, you could look fora place that sell a special funnel that is supposed to lock in where your radiator cap goes. Here is one on Amazon... http://www.amazon.com/Lisle-22150-Sp...13&sr=8-29. This will basically allow the fluid to back up into the funnel and not gush out everywhere.

I use the towel method... I'm a cheap bastard.

8. Then shut your truck off... and let it cool down.
9. Top off the radiator & overflow tank if needed.
10. Put the cap on and you should be good.


The key step is to remember to turn your heat control up to full heat. This allows coolant to flow through the heater core and flush out any air - which will be released because the radiator cap is off.

Good luck,
Cartman

 

There is no need to turn the heat on full as the coolant is constantly circulating through there. Turning the heat on full does nothing more than open the plenum door. This is an old wives' tale that I wish would cease.

 

Thanks for the help guys!

 

Interesting comment... I guess that can be the caseon some cars/trucks. Probably is the case for Dodge.Butmy old school Toyota 4runner has a control valve on the hose that enters the heater core that is controlled by the heat control slider.

I do it out of habbit - and it's not like it is going to hurt anything.

Cartman.