Maybe someone has experienced something like this before. When I get in my truck(99 Ram 360 auto) and put it in gear and take off, I hear a gush of liquid (coolant?) underneath the dash. I would think that it is from the heater core? Nothing appears to be leaking, but it sounds like water is pouring into the cab. also, I don't know if this is connected, but sometimes when it sits at idle for a time, it will start to overheat. It does not appear to be pulling anything from the overflow. Any ideas would be helpful, Thanks

 

Sound like you have water in the system. If the buble gets to the water pump it will not circulte the fluid. I'm not to sure how to check it [&:] It could also be that your cooling system is leaking and not getting to the correct presure.

 

Well I hope he has water in the system!!

Seriously though, put the front end on ramps take rad cap off start truck and add fluid till you get the air out of the system, then make sure your water pump is actually circulating the fluid. Sounds like you are just airbound, that should take care of it.

 

you might also check for any leaks. if the water level is dropping, you have a leak somewhere. I currently have this problem and I think the radiator is leaking at the top of the tank.

 

I meant to say Air! Air in the system!!!

Most likly caused by low levels like Steve said. Its easy to do when your filling your system and don;t put enough in. When you fillit from being empty or really low you have to let it run for a while. With the rad. cap off is fine. When you rev the engine the coolant level will drop. The main thing is to let the t-stat open up so coolant is flowing through the system. You can tell once it opens alot. The coolant level realy drops down. So just keep toping it off like that, better to much then to little. It can always overflow into the canister

 

oh yeah, and make sure you use distilled water with your 5 year antifreeze... prevents sludge from forming

 

dude my truck does the same EXACT thing its EXACTLY what my truck does i cant believe it i thought i was the only one man did you get it fixed i think it mighhtt be my fan clutch im gonna replace it and im gonna try to burpp the sytem but its making me soooo madd

 

Its gonna be your fan clutch. Fans is attached to the water pump, and water pump is always spinning when the car is on. The only way coolant isn't circulating is if theres an air buble right in the water pump.

 

what does a fan clutch have to do with water circulation? It doesn't even touch water. I know it bolts to the front of the water pump but it doesn't circulate water. You can run an engine with out a fan clutch and the water pump will still pump water. I have seen many dodge trucks air lock back at the heater core, or depending on year the heater valve. If the truck is over heating then yes a fan clutch could be the problem.

 

I mean to type 'Its NOT gonna be your fan clutch..."


I really need to start proof reading my posts