Van keeps overheating!
My van started overheating on Christmas Eve and I had a coolant leak about a year or so ago from the rear heater pipes, so I assumed that was the issue again and stopped and quickly added coolant, which seemed to fix the issue. I didn't see a coolant leak the following days and my reservor was full and the over heating stopped initially. After driving pretty far a week later, I over heated again....This time, I went and got some stop leak and the pellets just got stuck in the radiator......I added more coolant, still didn't see a leak, so I googled issues and checked to see if a gasket was blown, but it didn't overheat in idle. So, we changed out the thermostat and pulled the pellets out of the radiator, let coolant flow through the system and the issue seemed to be fixed. Then my van statred making a whoosh, whoosh, whoosh sound when in idle and started to barely overheat, then go back down. My check engine light came on and went off, so I stopped by Auto Zone to get a diagnostics and they said it seemed the air sensor was dirty and we pulled that off, cleaned it and plugged it back in. The check engine light has stayed off, but the whooshing would come and go mostly while in idle, and my heat has come and gone with it. Last night, I drove around more than usual and I overheated right before I got home (along with whooshing noises)....This morning, I noticed a ton of coolant on the ground at the rear of my van, so I assume the rear heater pipes have failed again....I checked my reservoir and tried to make it to work.....My car had been warming up awhile and I didn't get far before over heating again...I added more coolant and caustiously drove to work while running pretty warm. I checked my reservoir and coolant cap for a milky substance and don't see any, I am considering just bypassing the rear heat altogether, but am not sure if the whooshing sound is a part of the corroded pipes or a seperate issue altogether. When I have the hood up and van running, it sounds as if all fans are running. I need to know the cheapest and easiest way to fix this. Iam on one income, and this is my only way to and from my new job. Please help. My brother is mechanically inclined and will help me, but I need to know the issue first.