Coolant flow restrictor

[00XTL]

Hello everyone,

I recently replaced both front heater hoses and now I can hear water flowing from behind the dash. The system was vacuumed filled with coolant and the temp measured inside the vent was a round 120 degrees so I don't think there is an air bubble in there. Ive heard that you can put a flow restrictor in the heater hose inlet line to help prevent this problem. If this is true dose anyone know where i could find one?

Thanks

 

[rjdelp7]

I had a Town Car do this. How is your heat and temp gauge? Are both low? Mine were and it had air in the system. I found a plug near the crossover on the intake. I removed it and saw there was no coolant in the tube. I only added a small amount and filled to the top. Your vehicle has a different intake, so try squeezing the upper hose. I have drained my coolant on my 2000 and didn't have to vacuum fill it. The air is released in the degas bottle, when you crack the cap.

 

[00XTL]

The heat is great. Blows very warm. Everything works great. Coolant is where it need to be and never runs low. I stuck a thermometer inside the vent and it read 120 at idle.

 

[rjdelp7]

The previous owner of my old 99 Town Car, had put a new intake on it. I could hear water sloshing, under the dash. The temp gauge seemed too low. The heat worked, but not that great. The coolant level was at full mark. After I added coolant into the crossover, the noise stopped, the gauge went up to mid level and heat felt normal. I am guessing a pocket of air was trapped.

 

[Trainmaster]

I believe the original hoses had a flow restriction crimped in them. Check the hoses you removed or look at another car for its location.

 

[00XTL]

Thanks for the advice. I dont have the old hoses anymore, but i think I’m going to remove the inlet hose and see if there a restrictor inside and the check the intake crossover as well

Thnaks

 

[00XTL]

So i took the inlet hose off and saw that there is a restrictor where it hooks to the intake cross over. For what ever reason, now it only makes the noise what i start the engine and not while drive. Maybe ill buy a nother restrictor and put it closer to the heater core connection?.