Heater blows cold

I got a 99 intrepid 2.7 and im having heat probs. If you start the car and let it ilde to warm up and put the heater on it just blows cold no matter how long you let it idle , but if you rev the engine up it starts pumping out lots of heat and you will get heat as long as your driving but as soon as you let the car go back to idle it starts blowing cold air again. I suspect its a vacum line leak that is causing the prob but just wondered if anyone has had same prob and how they fixed it ? any help or sugestion would be apreciated Thanks.>>>>>>Jeff

Got the help I needed from another more active forum. There was air in the system which you can drain using the bleeder valve located on the top of the thermostat housing. same as bleeding the brakes just crack the bleeder open with the car @ running TEMP and watch the air come out ,adding coolant as needed until you have a steady stream of coolant with no bubbles in it and then close the bleeder. HEATER BLOWS HOT HOT HOT. Just thought you might like to know>>>Jeff

Thanks Jeff for this info. Sorry no one got back to you quicker. I wish this site was more active then it is.. I find i'm looking around for answers but there are still good facts and info to use on here.

I did the same as you, put my answer in for future reference incase someone else had the same problem.

:smile: